Solved papers for RAJASTHAN PMT Rajasthan - PMT Solved Paper-1995

done Rajasthan - PMT Solved Paper-1995

  • question_answer1) In an adiabatic process relation of relative change in pressure \[\frac{\Delta P}{P}\]with relative change m volume\[\frac{\Delta P}{V}\] is:

    A) \[\frac{1}{\gamma }\left( \frac{\Delta V}{V} \right)\]

    B) \[\frac{1}{{{\gamma }^{2}}}\left( \frac{\Delta V}{V} \right)\]

    C) \[-\gamma \left( \frac{\Delta V}{V} \right)\]

    D) \[\gamma \left( \frac{\Delta V}{V} \right)\]

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  • question_answer2) There is a rough black spot on a polished surface. It is heated to a temperature \[1400{}^\circ C\] then:

    A) black spot will be seen more bright

    B) spot and plate will be seen with equal brightness

    C) neither spot nor plate will be seen bright

    D) polished surface will be seen more bright

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  • question_answer3) A body cool from \[{{80}^{o}}C\]to \[{{70}^{o}}C\] in 6 minutes. Then in cooling from \[{{70}^{o}}C\] to \[{{60}^{o}}C\], time taken will be:

    A) less than 6 minutes

    B) 6 minutes

    C) mere than 6 minutes

    D) zero

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  • question_answer4) A hammer of mass 1 kg having speed of\[50\text{ }m/s,\] hit a iron nail of mass \[200gm\]. If specific heat of iron is \[0.105cal/g{{m}^{o}}C\]and half the energy is converted into heat, the raise in temperature of nail is:

    A) \[{{7.1}^{o}}C\]

    B) \[{{9.2}^{o}}C\]

    C) \[{{10.5}^{o}}C\]

    D) \[{{12.1}^{o}}C\]

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  • question_answer5) Thickness of a glass plate is t and its refractive index is n. Velocity of light in vacuum is c. Then minimum time taken by light in passing through the glass plate is:

    A) \[\frac{ct}{n}\]

    B) \[\frac{nt}{c}\]

    C) \[nct\]

    D) \[\frac{nc}{t}\]

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  • question_answer6) There are some points in stationary wave which:

    A) are never at rest

    B) are always in motion

    C) are at rest twice in each cycle

    D) are at rest once in each cycle

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  • question_answer7) A closed pipe of length L resonate with a lulling fork. The length of open pipe to resonate with the same tuning fork will be:

    A) \[\frac{L}{2}\]

    B) \[L\]

    C) \[\frac{3L}{2}\]

    D) \[2L\]

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  • question_answer8) Length of a piano wire is \[1.1\,m\]and its mass is \[160g\]. If its frequency is \[33Hz\], then tension in wire in newton is:

    A) \[556\,N\]

    B) \[~635\,N\]

    C) \[766\,N\]

    D) \[995\,N\]

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  • question_answer9) Two sound sources \[{{S}_{1}}\] and \[{{S}_{2}}\] of frequencies \[324Hz\]and \[320Hz\] are placed at certain separation. An observer is moving on line joining them. If he hears no beats then speed of observer is: \[(\upsilon =344m/\sec )\]

    A) \[20m/s\]

    B) \[10m/s\]

    C) \[5m/s\]

    D) \[3.1m/s\]

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  • question_answer10) A car moving with speed \[28m/s\]sound a horn of frequency\[500Hz\], passes another car moving with a speed of \[13m/s\]in same direction, then frequency of horn heard by driver of another car is (speed of sound is \[342m/s\]):

    A) \[480\,Hz\]

    B) \[500\,Hz\]

    C) \[520\,Hz\]

    D) \[580\,Hz\]

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  • question_answer11) Ratio of energies of two photons whose wavelengths are \[6000\overset{\text{o}}{\mathop{\text{A}}}\,\]and \[4000\overset{\text{o}}{\mathop{\text{A}}}\,\] is:

    A) \[2:3\]

    B) \[3:2\]

    C) \[1:5\]

    D) \[5:1\]

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  • question_answer12) Behaviour of zone plate coincides with:

    A) prism

    B) grating

    C) biprism

    D) lens

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  • question_answer13) Two charges\[4q\]and\[q\] are placed at a distance\[I\] another charge Q is placed at the midpoint of line joining the charges\[4q\]and\[q\] If net force on charge\[q\] is zero, then value of \[Q\] is:

    A) \[+q\]

    B) \[-q\]

    C) \[+2q\]

    D) \[3q\]

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  • question_answer14) Potential on the surface of a hollow sphere is 10 volt. Then potential at its centre will be:

    A) \[10\,volt\]

    B) \[5\,volt\]

    C) \[25\,volt\]

    D) zero

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  • question_answer15) A charge is placed on the axis of a dipole at a distance r from centre then charge experiences a force F. If distance from the centre is doubled then new value of force will be:

    A) zero

    B) \[\frac{1}{2}\]

    C) \[\frac{F}{4}\]

    D) \[\frac{F}{8}\]

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  • question_answer16) Ratio of gravitational force and electrostatic force between two electrons is:

    A) \[{{10}^{-36}}\]

    B) \[{{10}^{-39}}\]

    C) \[{{10}^{-42}}\]

    D) \[{{10}^{-47}}\]

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  • question_answer17) In a coil current changes from \[4A\]to \[2A\] in\[0.05\text{ }sec,\] if induced e.m.f. is 8 volt then self-inductance of the coil is:

    A) \[0.5H\]

    B) \[0.35H\]

    C) \[0.2H\]

    D) \[2mH\]

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  • question_answer18) Dimension of a rectangular coil is\[20cm\times 10cm\]. Number of turns in coil is 60. It is rotating in an uniform magnetic field of \[0.5T,\]with a speed 1800 r.p.m. the maximum induced e.m.f. is:

    A) \[98\,V\]

    B) \[110\,V\]

    C) \[113\,V\]

    D) \[118\,V\]

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  • question_answer19) In a stop up transformer ratio of number of turn in primary to secondary coil is \[1:25\]. If input voltage is \[230\text{ }volt\]and load current is\[2amp\], then current in primary coil is:

    A) \[50A\]

    B) \[25A\]

    C) \[12.5A\]

    D) \[6.25A\]

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  • question_answer20) Value of current in an A.C. circuit is \[I=2\cos \omega t+\theta ),\]then the value of\[{{I}_{rms}}\]is:

    A) \[\sqrt{\text{2}}\text{A}\]

    B) \[\frac{\text{1}}{\sqrt{\text{2}}}\text{A}\]

    C) \[\text{2A}\]

    D) \[\frac{\text{1}}{2}\text{A}\]

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  • question_answer21) Impedence of a coil is \[100ohm\]at frequency \[50Hz\], then its impedence on \[150Hz\]is:

    A) \[100\,ohm\]

    B) \[300\,ohm\]

    C) \[450\,ohm\]

    D) \[600\,ohm\]

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  • question_answer22) For a paramagnetic substance suspectibility is related with temperature as:

    A) \[V\propto T\]

    B) \[X\propto \frac{1}{T}\]

    C) \[X\propto \frac{1}{T-T}\]

    D) constant

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  • question_answer23) Kinetic energy of an electron in hydrogen atom in Bohrs orbit of radius r:

    A) \[\frac{KE}{2r}\]

    B) \[\frac{K{{E}^{2}}}{2r}\]

    C) \[\frac{KE}{r}\]

    D) \[\frac{2KE}{r}\]

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  • question_answer24) Wavelength of second line of Lyman series is \[1025\overset{\text{o}}{\mathop{\text{A}}}\,,\] then wavelength of first line is:

    A) \[825\overset{\text{o}}{\mathop{\text{A}}}\,\]

    B) \[900\overset{\text{o}}{\mathop{\text{A}}}\,\]

    C) \[1215\overset{\text{o}}{\mathop{\text{A}}}\,\]

    D) \[1325\overset{\text{o}}{\mathop{\text{A}}}\,\]

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  • question_answer25) In an atom quantum number in a orbit n, \[l\] and m are same. The maximum number of electrons are:

    A) \[2\]

    B) \[2{{n}^{2}}\]

    C) \[(2l+1)\]

    D) \[2(2l+1)\]

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  • question_answer26) Acceleration voltage in an electron gun is 50000 volt, de-Brogile wavelength of electron will be:

    A) \[0.55\overset{\text{o}}{\mathop{\text{A}}}\,\]

    B) \[0.055\overset{\text{o}}{\mathop{\text{A}}}\,\]

    C) \[0.077\overset{\text{o}}{\mathop{\text{A}}}\,\]

    D) \[0.095\overset{\text{o}}{\mathop{\text{A}}}\,\]

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  • question_answer27) Momentum of X-ray photon of wavelength \[0.01\overset{\text{o}}{\mathop{\text{A}}}\,\]in kg-m/sec is:

    A) \[6.6\times {{10}^{-22}}\]

    B) \[6.6\times {{10}^{-32}}\]

    C) \[6.6\times {{10}^{-46}}\]

    D) \[6.6\times {{10}^{-27}}\]

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  • question_answer28) Work function of metal is\[2.4\,eV\]. Then for photo electorons omission, maximum wavelength of photon will be:

    A) \[3000\overset{\text{o}}{\mathop{\text{A}}}\,\]

    B) \[3500\overset{\text{o}}{\mathop{\text{A}}}\,\]

    C) \[4500\overset{\text{o}}{\mathop{\text{A}}}\,\]

    D) \[5000\overset{\text{o}}{\mathop{\text{A}}}\,\]

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  • question_answer29) Ratio of ionization power of \[\alpha \] and \[\]particles emitted from a radioactive element is;

    A) \[1:100\]

    B) \[100:1\]

    C) \[1000:1\]

    D) \[1:1000\]

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  • question_answer30) The half-life of radioactive clement is 5 days, then time taken by in decaying \[\frac{\text{7}}{\text{8}}\text{th}\] of its initial amount:

    A) \[2.5\,day\]

    B) \[5\,day\]

    C) \[10\,day\]

    D) \[15\,day\]

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  • question_answer31) \[_{\text{90}}\text{T}{{\text{h}}^{\text{232}}}\]disintegrate continuously and finally converts into\[_{\text{82}}\text{P}{{\text{b}}^{\text{208}}}\text{,}\]then number of \[\alpha \] and \[\] particles produced are respectively:

    A) \[4,6~\]

    B) \[6,4\]

    C) \[3,2\]

    D) \[2,3\]

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  • question_answer32) In a diode thermionic emission from cathode will be maximum when cathode has:

    A) high work function, low temperature

    B) high work function, high temperature

    C) low work function, high temperature

    D) low work function, low tern temperature

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  • question_answer33) For a triode \[\mu =25,Rp=40\,k\Omega \] \[{{R}_{L}}=10\,k\Omega \]and input signal voltage is 0.5 volt. Then output voltage is:

    A) \[1.25\,volt\]

    B) \[2.5\,volt\]

    C) \[5\,volt\]

    D) \[10\,volt\]

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  • question_answer34) Which of the following is used as an impurity for p-type semiconductor?

    A) Boran

    B) Bismuth

    C) Arsenic

    D) Phosphorous

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  • question_answer35) When a plane mirror is placed horizontally on a level ground at a distance of 60 metre from the foot of a tower. The top of the tower and its image in the mirror subtend at the eye an angle of \[{{90}^{o}}\], the height of the tower is:

    A) \[30\,m\]

    B) \[40\,m\]

    C) \[60\,m\]

    D) \[90\,m\]

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  • question_answer36) Moment of inertia of a fan is\[0.06kg-{{m}^{2}}\]. If its angular speed is increased from 0 to 5 revolution/sec. Then its maximum angular momentum in M.K.S. unit is:

    A) \[0.3\,\pi \]

    B) \[0.6\,\pi \]

    C) \[\frac{0.03}{\,\pi }\]

    D) \[\frac{0.6}{\,\pi }\]

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  • question_answer37) A rigid body is rotating with an angular velocity\[\vec{\omega },\] torque acting on it is\[\vec{t}\]and an angular momentum is\[\vec{L}.\] Then relation between\[\vec{t}\] and\[\vec{L}\] is :

    A) \[\vec{t}=\vec{\omega }\times \vec{L}\]

    B) \[\vec{t}=\vec{L}\frac{d\vec{\omega }}{dt}\]

    C) \[\vec{t}=\vec{\omega }\frac{d\vec{L}}{dt}\]

    D) \[\vec{t}=\frac{dL}{dt}\]

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  • question_answer38) A block slides on inclined plane then velocity at the bottom of plane is v. If a ring roll on same inclined plane then its velocity at the bottom of plane is :

    A) \[2\upsilon \]

    B) \[\upsilon \]

    C) \[\frac{\upsilon }{2}\]

    D) \[\frac{\upsilon }{\sqrt{2}}\]

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  • question_answer39) A particle executes S.H.M. with an amplitude 4 cm. The displacement where its energy is half K.E. and half HE. is:

    A) \[2\sqrt{2}\]cm

    B) 2 cm

    C) \[\sqrt{2}\]cm

    D) \[\frac{3}{\sqrt{2}}\]cm

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  • question_answer40) A body of mass in is taken from earth surface to height equal to earth radius R. Then change in its potential energy is:

    A) \[\frac{mgR}{2}\]

    B) \[mgR\]

    C) \[2mgR\]

    D) \[\frac{mgR}{4}\]

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  • question_answer41) A satellite is revolving close to surface of planet of radius R, its time period is T- Time period of satellite for a planet of radius 3R will be:

    A) \[\text{3}\sqrt{\text{3}}\text{T}\]

    B) \[\frac{\sqrt{\text{3}}}{2}\text{T}\]

    C) \[\frac{1}{3\sqrt{\text{3}}}\text{T}\]

    D) \[\frac{1}{2}\text{T}\]

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  • question_answer42) A second pendulum is suspended in satellite revolving round the earth a height 2R above earth surface, then its time period in second is:

    A) zero

    B) 2 sec

    C) 4 sec

    D) infinite (\[\infty \])

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  • question_answer43) A soap bubble is expand from radius 1 cm to 2 cm. If surface tension of soap solution is 0.05 N/m- The work done in joule will be:

    A) \[1.5\,\times {{10}^{-4}}\]

    B) \[1.2\pi \times {{10}^{-4}}\]

    C) \[0.3\pi \times {{10}^{-4}}\]

    D) \[0.6\pi \times {{10}^{-4}}\]

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  • question_answer44) The height of liquid rise in a capillary tube will be:

    A) maximum at \[{{4}^{o}}C\]

    B) maximum at \[{{0}^{o}}C\]

    C) minimum at \[{{4}^{o}}C\]

    D) minimum at \[{{0}^{o}}C\]

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  • question_answer45) Specific heat of gas at constant volume is:

    A) \[\frac{R}{(\gamma -1)}\]

    B) \[\frac{R}{(\gamma +1)}\]

    C) \[\frac{R}{\gamma }\]

    D) \[R(\gamma -1)\]

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  • question_answer46) A body radiate \[Q\text{ }cat/c{{m}^{2}}\]heat at a temperature\[{{227}^{o}}C\]. The rate of energy radiate at a temperature \[{{727}^{o}}C\]is (in\[cal/c{{m}^{2}}\]):

    A) \[2Q\]

    B) \[4Q\]

    C) \[16Q\]

    D) \[32Q\]

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  • question_answer47) A train of mass \[5\times {{10}^{6}}kg\]is moving with a speed of\[72\text{ }km/hr\]. By applying break it is stopped, then heat produced in kilo calories is:

    A) \[1.2\times {{10}^{5}}kcal\]

    B) \[2.4\times {{10}^{5}}kcal\]

    C) \[4.8\times {{10}^{5}}kcal\]

    D) \[6\times {{10}^{5}}kcal\]

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  • question_answer48) Refractive index of air is 1.003. The correct thickness of air column which will have one or more wavelength of yellow light \[(6000\overset{\text{o}}{\mathop{\text{A}}}\,)\] than in the same thickness in vacuum is:

    A) \[2mm\]

    B) \[2cm\]

    C) 2m

    D) \[2km\]

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  • question_answer49) Length of a sonometer wire is \[l\]and its tension is T. If tension is made half, then its second harmonics is equal to first harmonics. Then the length of wire will be:

    A) \[\frac{l}{\sqrt{2}}\]

    B) \[\frac{l}{2}\]

    C) \[l\]

    D) \[\frac{3l}{2}\]

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  • question_answer50) Two sources of sound of same frequency are situated at a distance 1 metre apart. An observer is moving parallel to line joining them at a distance 10 metre. If distance between two consecutive an tinode is observed to be \[1.1\] metre, then frequency of source is (\[\upsilon \] = 300 m/sec):

    A) \[1000\,Hz\]

    B) \[3000\,Hz\]

    C) \[3500\,Hz\]

    D) \[4000\,Hz\]

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  • question_answer51) Two waves of intensity \[I\]and\[4I\] super impose on each other. Then in interference maximum and minimum intensity are respectively:

    A) \[3I\]and\[2I\]

    B) \[25I\] and \[9I\]

    C) \[9I\] and \[I\]

    D) \[5I\] and \[3I\]

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  • question_answer52) In Youngs double slit experiment distance between slit is 0.1mm and distance between slit and screen is\[20cm\]. If \[\lambda =5460\,\overset{\text{o}}{\mathop{\text{A}}}\,,\], then fringe width is:

    A) \[0.5mm\]

    B) \[1.1\text{ }mm\]

    C) \[1.5\text{ }mm\]

    D) \[2.2mm\]

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  • question_answer53) Five balls \[1,2,3,4,5\]are suspended side by side. The pair of balls \[(1,2),\] \[(1,4)\] and \[(2,5)\] attract each other whereas balls \[(2,3)\] and \[(4,5)\] repel each other. The ball number 1 must be:

    A) positively charged

    B) negatively charged

    C) neutral

    D) conductor

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  • question_answer54) A charger\[q\] is placed at the centre of circle of radius r. Then work done by charge Q in completing one round is:

    A) \[\frac{Q}{4\pi {{\varepsilon }_{0}}r}\]

    B) \[\frac{Qq}{4\pi {{\varepsilon }_{0}}r}\]

    C) zero

    D) \[\frac{2q}{2r}\]

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  • question_answer55) Two charge each of value \[-q\] are placed at \[(0\pm \,a)\]. A charge + Q is placed on the y-axis, then:

    A) it will execute S.H.M.

    B) its motion is oscillatory, but not S.H.M.

    C) it will remain stationary

    D) will move along x-axis

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  • question_answer56) Radius of a current carrying circular coil is R at a distance\[x(x>>R)\] on the axis of circular coil the magnetic field produced B is proportional to:

    A) \[B\propto \frac{1}{{{x}^{3/2}}}\]

    B) \[B\propto \frac{1}{{{x}^{2}}}\]

    C) \[B\propto \frac{1}{{{x}^{3}}}\]

    D) \[B\propto \frac{1}{{{x}^{-1/2}}}\]

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  • question_answer57) Atomic weight of single charge \[Li\] is \[6.06\,amu\]and its energy is\[400\,eV\]. It enter normally to a uniform magnetic field of \[0.8\] Tesla, then radius of circular path is:

    A) \[8.35\,cm\]

    B) \[9.23\,cm\]

    C) \[10.5\,cm\]

    D) \[11.25\,cm\]

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  • question_answer58) The length of a coil is \[0.3\,m\]and the number of turns is 2000. The area of cross-section of the coil is\[1.2\times {{10}^{-3}}{{m}^{2}}\]. Another coil is 300 turns is wrapped over the above coil. A current of 2A is passed through the solenoid and its direction is changed in\[0.25\,sec\]. Then the e.m.f induced in volt will be:

    A) \[7.6\times {{10}^{-2}}\]

    B) \[4.8\times {{10}^{-3}}\]

    C) \[3.2\times {{10}^{-4}}\]

    D) \[3.2\times {{10}^{-2}}\]

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  • question_answer59) Number of turns in primary coil of a transformer is 240. When input voltage is 20 volt, then output voltage is 2.5 volt. The number of turns in secondary coil is :

    A) 250

    B) 100

    C) 10

    D) 30

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  • question_answer60) When 4 amp current flows through a motor then power consumed is 20 watt, and resultant potential difference is 220 volt. The applied e.m.f. is :

    A) 220 volt

    B) 225 volt

    C) 240 volt

    D) 260 volt

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  • question_answer61) For ferromagnetic material:

    A) permeability is very high and suspectibility is positive

    B) permeability is very high and suspectibility is negative

    C) permeability is very low and suspectibility is positive

    D) permeability is very low and suspectibility is negative

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  • question_answer62) Angular momentum of an electron revolving in \[{{\text{2}}^{\text{nd}}}\] orbit of radius r:

    A) \[\frac{h}{2\pi }\]

    B) \[\frac{h}{\pi }\]

    C) \[\frac{h}{\pi r}\]

    D) \[\frac{h}{2\pi r}\]

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  • question_answer63) The ionization energy of hydrogen atom in excited state is:

    A) \[13.1eV\]

    B) \[3.4eV\]

    C) \[1.51eV\]

    D) \[1.9eV\]

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  • question_answer64) Minimum wavelength of X-ray? Is \[0.1\,\overset{\text{o}}{\mathop{\text{A}}}\,\], then applied accelerating voltage on the tube is:

    A) \[1.25\times {{10}^{3}}volt\]

    B) \[1.24\times {{10}^{4}}volt\]

    C) \[1.24\times {{10}^{5}}volt\]

    D) \[1.24\times {{10}^{6}}volt\]

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  • question_answer65) In X-ray spectra wavelength of \[{{k}_{\alpha }}\] line is \[\lambda ,\]depends upon atomic number of target Z as:

    A) \[\lambda \propto {{Z}^{2}}\]

    B) \[\lambda \propto {{(Z-1)}^{2}}\]

    C) \[\lambda \propto \frac{1}{(Z-1)}\]

    D) \[\lambda \propto \frac{1}{{{(Z-1)}^{2}}}\]

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  • question_answer66) Mean mass of an element is 39.1 amu, The masses of its isotopes are 39, 40, 41 amu. If the abundance isotope of 40 amu is 0.012%, then relative abundance of other two is:

    A) 93.7, 6.233

    B) 90.237, 8.751

    C) 93.073, 6.915

    D) 91.387, 8.603

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  • question_answer67) In triode amplification voltage gain depends on:

    A) \[\mu ,RL\]and input voltage

    B) \[{{R}_{P,}}{{R}_{L}}\]and \[\mu \]

    C) \[\mu {{R}_{P,}}\] and input voltage

    D) \[{{R}_{P,}}\mu \]and\[{{g}_{m}}\]

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  • question_answer68) Forbidden energy gap in insulator is of:

    A) 0 eV

    B) 0.7 eV

    C) 1.1 eV

    D) 5 eV

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  • question_answer69) For a reverse biase \[\text{p-n}\] junction:

    A) p region is positive and the current is due to electrons

    B) p region is positive and the current is duo to holes

    C) p region is negative and the current is due to electrons

    D) p region is negative and the current is due to both electrons and holes

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  • question_answer70) In an X-ray tube, electrons are accelerated by a potential difference V, the minimum wavelength of emitted X-rays is:

    A) \[\frac{12400}{V}m\]

    B) \[\frac{12400}{V}\overset{0}{\mathop{\text{A}}}\,\]

    C) \[\frac{1.24}{V}\overset{0}{\mathop{\text{A}}}\,\]

    D) \[\frac{V}{12400}\overset{0}{\mathop{\text{A}}}\,\]

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  • question_answer71) Which of the following is best absorbed of X-rays?

    A) Berylium

    B) Copper

    C) Gold

    D) Lead

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  • question_answer72) In electromagnet core is made of soft iron because:

    A) its suspectibility and permeability are high

    B) suspectibility is high and permeability is low

    C) both suspectibility and permeability are low

    D) suspectibility is low and permeability are high

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  • question_answer73) Two -spheres (A and B) each of mass 5 kg are connected by a light rod of length 1 m. Treating spheres as point. The ratio of moment of inertias about X axis perpendicular to length of rod and passing through centre of A and centre of rod is:

    A) 1 : 1

    B) 4 : 1

    C) 1 : 2

    D) 2 : 1

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  • question_answer74) The moment of inertia of a ring about its own axis is \[I.\] Then its moment of inertia, about a tangent in the plane is:

    A) \[\frac{I}{2}\]

    B) \[\frac{3I}{2}\]

    C) \[2I\]

    D) \[\frac{5I}{2}\]

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  • question_answer75) Mass of a ring is M and its radius is R. It is rotating about its own axis with angular velocity \[\omega \]. Two particles each of mass m sticks to the rim at diameter opposite point. Now angular velocity of ring is:

    A) \[\frac{M\omega }{2m}\]

    B) \[\frac{2m\omega }{M}\]

    C) \[\frac{(M+2m)\omega }{M}\]

    D) \[\frac{M\omega }{(M+2m)}\]

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  • question_answer76) A thin rod of mass M acts as a compound pendulum. Distance between centre of suspension and centre of mass is d. Moment of inertia about axis of suspension of\[I.\]Then distance between centre of suspension and centre of oscillation is:

    A) \[\frac{I}{Md}\]

    B) \[\frac{I}{2Md}\]

    C) \[\frac{I}{12Md}\]

    D) \[\frac{3I}{4Md}\]

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  • question_answer77) The following bodies have same mass, then which will have maximum moment of inertia about an axis perpendicular to plane and passing through centre of mass:

    A) ring of radius a

    B) disc of radius a

    C) square plate of side 2n

    D) four rods forming a square of each side 2a

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  • question_answer78) Length of a simple pendulum is \[I\]and its maximum angular displacement is \[\theta \] then its maximum K.E. is :

    A) \[mgl\,\sin \,\theta \]

    B) \[mgl(1+\,\sin \,\theta )\]

    C) \[mgl(1+\,\cos \,\theta )\]

    D) \[mgl(1-\,\cos \,\theta )\]

    View Answer play_arrow
  • question_answer79) Extension in length of a spring is 12 cm, when 5 kg mass is suspended on it. If spring oscillate vertically, then its time period is:

    A) 0.7 sec

    B) 0.9 sec

    C) 1.1 sec

    D) 1.4 sec

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  • question_answer80) \[n\] bullets each of mass \[m\] moving with velocity \[u\] strike normally on a wall. The collision is elastic then force on wall is:

    A) \[mnu\]

    B) \[2\,mnu\]

    C) \[4\,mnu\]

    D) \[0\]

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  • question_answer81) A planet revolve round the sun in elliptical orbit when planet is nearest to sun at a distance \[a\] its velocity is \[\upsilon \] and when it is farthest from sun at a distance \[b,\] its velocity is:

    A) \[\frac{b}{a}{{\upsilon }_{1}}\]

    B) \[\left( \frac{a}{b} \right){{\upsilon }_{1}}\]

    C) \[\left( \frac{\sqrt{a}}{b} \right){{\upsilon }_{1}}\]

    D) \[\frac{\sqrt{b}}{a}{{\upsilon }_{1}}\]

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  • question_answer82) A space ship of mass 2500 kg is to projected so mat it crosses earths gravitational field. If radius of earth is 6400 km. Then initial minimum velocity of space ship must be:

    A) 5.6 km/sec

    B) 7.25 km/sec

    C) 8.5 km/sec

    D) 11.2 km/sec

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  • question_answer83) The values of radius and mass of a planet are half than that of earth then value of g on that planet is :

    A) \[4.9\,m/{{s}^{2}}\]

    B) \[9.8\,m/{{s}^{2}}\]

    C) \[19.6\,m/{{s}^{2}}\]

    D) zero

    View Answer play_arrow
  • question_answer84) Surface tension force on water rised in capillary tube is balanced by force \[72\times {{10}^{-6}}N\] acting in downward direction due to weight of water. If surface tension of water is 0.06 N/m. Then internal circumference of capillary tube is:

    A) 0.5 mm

    B) 1 mm

    C) 1.2 mm

    D) 1.75 mm

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  • question_answer85) Critical temperature in terms of van der Waals constants a and b is:

    A) \[\frac{8a}{27Rb}\]

    B) \[\frac{27ab}{8R}\]

    C) \[\frac{8Rb}{27a}\]

    D) \[\frac{27a}{8Rb}\]

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  • question_answer86) \[{{O}_{2}}\] and \[{{H}_{2}}\] gas are at same temperature \[7{}^\circ K\]. Then average kinetic energy of \[{{O}_{2}}\] molecules in comparision of average kinetic energy of \[{{H}_{2}}\] molecules is:

    A) 16 times

    B) 8 times

    C) equal

    D) \[\frac{1}{16}\]times

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  • question_answer87) In an electric dipole value of charge is \[3.2\times {{10}^{-19}}\] coulomb and distance between charges is \[2.4\,\overset{\text{o}}{\mathop{\text{A}}}\,\] It is placed in electric field of \[4\times {{10}^{5}}\,volt/m,\] then dipole moment of dipole is:

    A) \[9.6\times {{10}^{-5}}\] coulomb-metre

    B) \[12.8\times {{10}^{-14}}\] coulomb-metre

    C) \[7.68\,\times {{10}^{-29}}\] coulomb-metre

    D) \[30\times {{10}^{-24}}\] coulomb-metre

    View Answer play_arrow
  • question_answer88) Nucleus of He is revolving in circular orbit of radius 0.8 m. It completes a circle in 2 seconds, then the magnetic induction at the centre of circle is:

    A) \[{{}_{\text{0}}}\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-19}}}\text{T}\]

    B) \[\text{1}\text{.6}{{}_{\text{0}}}\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-19}}}\text{T}\]

    C) \[\frac{{{}_{\text{0}}}}{2}\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-19}}}\text{T}\]

    D) \[\text{2}{{}_{\text{0}}}\text{ }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-19}}}\text{T}\]

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  • question_answer89) In potentiometer experiment a battery of e.m.f. 3 volt is balanced at a length of 45 cm and e.m.f. of another battery balance at 60 cm length. Then e.m.f. of the battery is:

    A) 3 volt

    B) 4 volt

    C) 4.5 volt

    D) 6 volt

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  • question_answer90) Side of a square coil is 4 cm. A magnetic field normal to plane of coil is changing at a rate of 0.4 tesla/ sec. If resistance of coil is \[2\times {{10}^{-3}}\,ohm,\] then induced current is:

    A) 0.16 A

    B) 0.32 A

    C) 3.2 A

    D) 1.6 A

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  • question_answer91) In an A.C. circuit inductance L = 0.5 H and capacitance \[C=8\,\mu F.\] For maximum current in circuit, value of angular frequency is:

    A) 500 rad/sec

    B) 250 rad/sec

    C) 150 rad/sec

    D) 100 rad/sec

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  • question_answer92) In an electric motor back e.m.f. is maximum:

    A) at the start of motor

    B) at the stop of motor

    C) at maximum speed of motor

    D) same in all case

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  • question_answer93) A chock coil of negligible resistance connected to 220 volt A.C. source- The 5 mA current flows through it. The average power consumed by chock coil is:

    A) zero

    B) 11 watt

    C) \[44\times {{10}^{3}}\] watt

    D) 1.1 watt

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  • question_answer94) Self-inductance of a chock coil is 10 m Hz. When it is connected with 10 volt D.C. source, then power consumed is 20 watt. And when connected with 10 volt A.C. source, the average power consumed is 10 watt. Frequency of A.C. source is :

    A) 50 Hz

    B) 60 Hz

    C) 80Hz

    D) 100 Hz

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  • question_answer95) On a bulb is marked 60 volt and 10 watt and is to be run with an A.C. source of 100 volt. Then inductance of series coil inquired is:

    A) 1.53 H

    B) 2.15 H

    C) 3.27 H

    D) 3.89 H

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  • question_answer96) In an L-C-R circuit C = 25 \[\mu F,\]L= 0.1 Hand R = 25 \[\Omega \] if an e.m.f. E = 310 sin 314 t volt is connected to circuit, then impedence is:

    A) \[57.32\,\Omega \]

    B) \[79.48\,\Omega \]

    C) \[89.5\,\Omega \]

    D) \[99.1\,\Omega \]

    View Answer play_arrow
  • question_answer97) In above equation what inductance must be added in the circuit so the impedence become minimum :

    A) 0, 31 H

    B) 0.35 H

    C) 1 H

    D) 2 H

    View Answer play_arrow
  • question_answer98) In question (96) value of current is:

    A) \[i=5.4\,\sin \,(314t+\phi )\]

    B) \[i=3.\,\sin \,(314t+\phi )\]

    C) \[i=3.\,1\,\sin \,(314t-\phi )\]

    D) \[i=3.\,46\,\sin \,(314t+\phi )\]

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  • question_answer99) In an A.C. circuit current and voltage are: \[i={{i}_{0}}\,\sin \,(\omega t-\pi /2),e={{e}_{0}}\,\sin \,\omega t\] then average power consumed in the circuit is:

    A) \[\frac{1}{2}\,{{i}_{0}}{{e}_{0}}\,watt\]

    B) \[{{i}_{0}}{{e}_{0}}\] watt

    C) \[ie\]watt

    D) zero

    View Answer play_arrow
  • question_answer100) The correct circuit for full wave rectifier containing a capacitor C and load resistance \[{{R}_{L}}\] is:





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  • question_answer101) Electronic configuration or \[Al\] is:

    A) \[2,8,3\]

    B) \[2,6,5\]

    C) \[2,3,8\]

    D) \[2,5,6\]

    View Answer play_arrow
  • question_answer102) Equilibrium constant \[{{K}_{c}}\] for the reaction \[2N{{H}_{3}}{{N}_{2}}+3{{H}_{2}}\]is given by the following:

    A) \[\frac{{{[N{{H}_{3}}]}^{2}}}{[{{N}_{2}}]{{[{{H}_{2}}]}^{3}}}\]

    B) \[\frac{[{{N}_{2}}]{{[{{H}_{2}}]}^{3}}}{{{[N{{H}_{3}}]}^{2}}}\]

    C) \[\frac{3{{[H]}_{2}}[{{N}_{2}}]}{2[N{{H}_{3}}]}\]

    D) \[\frac{2[N{{H}_{3}}]}{{{[H]}_{2}}[{{N}_{2}}]}\]

    View Answer play_arrow
  • question_answer103) Which of the following reduce Tollens reagent?

    A) \[HOOC-COOH\]

    B) \[{{C}_{6}}{{H}_{5}}OOH\]

    C) \[C{{H}_{3}}COOH\]

    D) \[HCOOH\]

    View Answer play_arrow
  • question_answer104) In natural petrolium is:

    A) saturated hydrocarbon

    B) compound of sulphur

    C) ring saturated hydrocarbon

    D) all the above

    View Answer play_arrow
  • question_answer105) In any system at equilibrium state if temperature, pressure and concentration is changed then the equilibrium shifts in the direction that tends to neutralize the effect of change. This is known as:

    A) Guldberg Wages law

    B) Gaylussacs law

    C) Avogadros rule

    D) Le-Chateliers principle

    View Answer play_arrow
  • question_answer106) \[X+NaN{{O}_{2}}+HCl\xrightarrow{{}}C{{O}_{2}}+{{N}_{2}}+{{H}_{2}}O\] compound X is:

    A) \[C{{H}_{3}}CON{{H}_{2}}~\]

    B) \[C{{H}_{3}}NO\]

    C) \[N{{H}_{2}}CON{{H}_{2}}\]

    D) \[C{{H}_{3}}N{{H}_{2}}\]

    View Answer play_arrow
  • question_answer107) The main product of the reaction of \[{{C}_{2}}{{H}_{5}}N{{H}_{2}}\] with north is acid is:

    A) \[{{C}_{2}}{{H}_{5}}OH\]

    B) \[C{{H}_{3}}ONO\]

    C) \[C{{H}_{3}}CN\]

    D) \[C{{H}_{3}}-N=0\]

    View Answer play_arrow
  • question_answer108) The shape of \[CC{{l}_{4}}\]is:

    A) triangular planer

    B) tetrahedral

    C) square planar

    D) linear

    View Answer play_arrow
  • question_answer109) Cryolite is added to alumina in the extraction of aluminium:

    A) to remove impurity

    B) to dissolve alumina

    C) to catalyze

    D) to obtain pure \[Al\]

    View Answer play_arrow
  • question_answer110) The aqueous solution of a salt is acidic salt is made up of:

    A) Strong acid and weak base

    B) Strong base and weak acid

    C) Strong acid and strong base

    D) Weak acid and weak base

    View Answer play_arrow
  • question_answer111) In atomic pile the \[{{D}_{2}}O\] act as:

    A) fuel

    B) controller

    C) moderator

    D) coolent

    View Answer play_arrow
  • question_answer112) \[C{{H}_{3}}-O-C{{H}_{3}}\] and \[C{{H}_{3}}C{{H}_{2}}OH\] are:

    A) geometrical isomers

    B) positional isomers

    C) chain isomers

    D) functional isomers

    View Answer play_arrow
  • question_answer113) The I. U. P. A. C. name of \[{{(C{{H}_{3}})}_{2}}CH-CH{{(C{{H}_{3}})}_{2}}\] is:

    A) 1, 1, 2, 3-tetra methyl ethane

    B) 2, 3-dimethyl butane

    C) 1, 2-dimethyl ethane

    D) 2, 3, 3-trimethyl butane

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  • question_answer114) Alkaline \[KMn{{O}_{4}}\]solution is called:

    A) Benedict solution

    B) Tollens reagent

    C) Baeyers reagent

    D) None of these

    View Answer play_arrow
  • question_answer115) Which of the following contain acidic hydrogen?

    A) \[C{{H}_{3}}-C\equiv CH\]

    B) \[C{{H}_{3}}-CH=C{{H}_{2}}\]

    C) \[C{{H}_{3}}-CH=CH-C{{H}_{3}}\]

    D) \[C{{H}_{3}}-C{{H}_{3}}\]

    View Answer play_arrow
  • question_answer116) Which of the following will be obtained by mixing \[50%\] \[NaOH\] to bauxite?

    A) \[Al{{(OH)}_{3}}\]

    B) \[Al\]

    C) \[Fe\]

    D) \[NaAl{{O}_{2}}\]

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  • question_answer117) Deviation from Aufbaus principle is:





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  • question_answer118) \[C{{H}_{3}}-C\equiv CH+{{H}_{2}}O\xrightarrow{{{H}^{+}}/H{{g}^{2+}}}X\] compound X is:

    A) \[C{{H}_{3}}\text{ }COC{{H}_{3}}\]

    B) \[C{{H}_{3}}C{{H}_{2}}COOH\]

    C) \[C{{H}_{3}}C{{H}_{2}}CHO\]

    D) \[C{{H}_{3}}-CH=C{{H}_{2}}\]

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  • question_answer119) When acetone react with chloroform and \[KOH\] formed hypnotic drug. Its name is:

    A) chloritons

    B) chloropicrin

    C) asprin

    D) none of these

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  • question_answer120) Brass is:

    A) an element

    B) a metal

    C) transition metal

    D) an alloy

    View Answer play_arrow
  • question_answer121) \[C{{H}_{3}}\text{ }CHO+C{{H}_{3}}\text{ }Mg\text{ }Br\xrightarrow{{}}\text{ }X\]compound X is:

    A) a secondary alcohol

    B) a tertiary alcohol

    C) a primary alcohol

    D) \[C{{H}_{3}}-C-C{{H}_{3}}\]

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  • question_answer122) The enzyme which converts starch into maltose is:

    A) maltase

    B) diastase

    C) zymase

    D) invertase

    View Answer play_arrow
  • question_answer123) \[{{C}_{2}}{{H}_{5}}O{{C}_{2}}{{H}_{5}}\] and \[C{{H}_{3}}-O-{{C}_{3}}{{H}_{7}}\]show following type of isomerism:

    A) metamerism

    B) functional group

    C) tautomerism

    D) position

    View Answer play_arrow
  • question_answer124) The oxidation number of S in \[{{H}_{2}}{{S}_{2}}{{O}_{8}}\] is:

    A) \[+6\]

    B) \[-6\]

    C) \[+4\]

    D) \[+8\]

    View Answer play_arrow
  • question_answer125) The shape of electron cloud is determined by:

    A) Azimuthal quantum number

    B) Spin quantum number

    C) Principle quantum number

    D) All of the above

    View Answer play_arrow
  • question_answer126) On addition of \[N{{H}_{4}}OH\]in the equilibrium: \[N{{H}_{4}}ClN{{H}_{4}}^{\oplus }+C{{l}^{\bigcirc -}}\]

    A) more \[N{{H}_{4}}\] is formed

    B) dissociation of \[N{{H}_{4}}Cl\]increase

    C) more \[C{{l}^{-}}\] is formed

    D) dissociation of \[N{{H}_{4}}Cl\]decreases

    View Answer play_arrow
  • question_answer127) For an electron \[n=2\]and \[l=1\] the total magnetic quantum numbers are:

    A) \[0\]

    B) \[3\]

    C) \[2\]

    D) \[1\]

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  • question_answer128) An alkene on ozonolysis gives only one compound. Alkene is:

    A) \[C{{H}_{3}}-CH=CH-C{{H}_{3}}\]

    B) \[C{{H}_{3}}-CH=C{{H}_{2}}\]

    C) \[C{{H}_{3}}-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}\]

    D) \[C{{H}_{3}}-C{{H}_{2}}-CH=C{{H}_{2}}\]

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  • question_answer129) If the value of pH of solution is 2, then the concentration of \[({{H}^{+}})\] is:

    A) \[{{10}^{-2}}M\]

    B) \[2\times 10M\]

    C) \[0.001M\]

    D) \[0.0001M\]

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  • question_answer130) Bond with lowest energy is:

    A) \[\pi \] bond

    B) hydrogen bond

    C) ionic bond

    D) o bond

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  • question_answer131) Dipositive ion of an element has the electronic configuration \[2,8,10\]. Atomic number of the element is:

    A) \[22\]

    B) \[24\]

    C) \[25\]

    D) \[28\]

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  • question_answer132) The negative part of the addition reagent adds on that C-atom of unsymmetrical alkene which bears the minimum number of H-atoms. The statement is related to:

    A) Peroxide effect

    B) Saytzeffs rule

    C) Markownikoffs rule

    D) Le-Chateliers principle

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  • question_answer133) \[C{{H}_{3}}COONa\xrightarrow[\Delta ]{\text{Sodalime}}X+N{{a}_{2}}C{{O}_{3}}\].

    A) \[C{{H}_{4}}\]

    B) \[C{{H}_{3}}OH\]

    C) \[C{{H}_{3}}-C{{H}_{3}}\]

    D) none of these

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  • question_answer134) A atom of \[Mn\] have (atomic no. = 25 and mass no. = 55). The nucleus will have:

    A) 25 proton

    B) 55 proton

    C) 25 neutron

    D) 55 neutron

    View Answer play_arrow
  • question_answer135) \[RMgI+C{{H}_{3}}OH\xrightarrow{{}}X,\], compound X is:

    A) \[R-R\]

    B) \[R-H\]

    C) \[R-OH\]

    D) none of these

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  • question_answer136) Which of the following will form most stable carbonium ion on dehydration:

    A) \[C{{H}_{3}}-\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,-{{(C{{H}_{3}})}_{2}}\]

    B) \[C{{H}_{3}}-CH-C{{H}_{2}}C{{H}_{3}}\]

    C) \[C{{H}_{3}}\text{ }C{{H}_{2}}\text{ }C{{H}_{2}}\text{ }C{{H}_{2}}\text{ }OH\]

    D) \[C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{2}}OH\]

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  • question_answer137) From left to right in a period ionization potential:

    A) decreases

    B) increases.

    C) first increases then decreases

    D) first decreases then increases

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  • question_answer138) Washing soda is:

    A) \[N{{a}_{2}}C{{O}_{3}}.10{{H}_{2}}O\]

    B) \[{{(NaP{{O}_{3}})}_{6}}\]

    C) \[N{{a}_{2}}C{{O}_{3}}\]

    D) \[N{{a}_{2}}{{B}_{4}}{{O}_{7}}\text{ }.\text{ 10}{{H}_{2}}O\]

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  • question_answer139) Lithium and magnesium resemble in properties becauses:

    A) their electronic configuration is same

    B) ratio of change of size of their cation is approximately same

    C) both have approximately same size

    D) both are found together in nature.

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  • question_answer140) Moving down a group:

    A) electronegativity increases

    B) ionization potential increases

    C) oxidizing strength increases

    D) reducing strength increases

    View Answer play_arrow
  • question_answer141) Which of the following property oftenly increases down a group?

    A) Atomic radius

    B) Electron affinity

    C) Electronegativity

    D) Ionization potential

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  • question_answer142) Power alcohol is:

    A) \[absolute\text{ }alcohol+C{{H}_{3}}OH\]

    B) absolute + petrol + benzene

    C) \[absolute\text{ }alcohol+C{{H}_{3}}COOH\]

    D) \[absolutealcohol+{{C}_{6}}{{H}_{5}}OH\]

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  • question_answer143) In the extraction of copper, ore is heated in the presence of air at high temperature. This process is called:

    A) roasting

    B) calcination

    C) smelting

    D) distillation

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  • question_answer144) Carbonium ion with highest stability is:

    A) \[{{(C{{H}_{3}})}_{3}}\overset{+}{\mathop{C}}\,\]

    B) \[\overset{+}{\mathop{C}}\,{{H}_{3}}\]

    C) \[C{{H}_{3}}-\overset{+}{\mathop{C}}\,H-C{{H}_{3}}\]

    D) \[C{{H}_{3}}C{{H}_{2}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]

    View Answer play_arrow
  • question_answer145) A white precipitate of silver chloride is formed when sodium chloride solution is added to silver nitrate solution because:

    A) \[AgN{{O}_{3}}\]is insoluble in \[NaCl\]solution

    B) \[NaCl\] is insoluble in water

    C) \[NaCl\] is an inorganic compound

    D) \[C{{l}^{-}}\] ions are present in \[NaCl\] solution

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  • question_answer146) \[{{N}_{2}}+3{{H}_{2}}2N{{H}_{3}}+22.4kcal\] the favourable condition for the formation of ammonia is:

    A) high temperature and high pressure

    B) low temperature and low pressure

    C) high temperature and low pressure

    D) low temperature and high pressure

    View Answer play_arrow
  • question_answer147) \[C{{H}_{3}}Cl+2Na+C{{H}_{3}}Cl\xrightarrow{{}}\] \[C{{H}_{3}}-C{{H}_{3}}+2NaCl\] This reaction is:

    A) Kolbes electrolysis

    B) Williamsons synthesis

    C) Wurtz reaction

    D) Sabatier Senderens reaction

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  • question_answer148) Reaction of \[C{{H}_{3}}C1\]with alcoholic \[KOH\] will give:

    A) \[C{{H}_{4}}\]

    B) \[C{{H}_{3}}OH\]

    C) \[C{{H}_{2}}=C{{H}_{2}}\]

    D) \[C{{H}_{3}}CHO\]

    View Answer play_arrow
  • question_answer149) \[{{C}_{2}}{{H}_{5}}COOAg+C{{l}_{2}}\xrightarrow{\Delta }{{C}_{2}}{{H}_{5}}Cl\] \[+AgCl+C{{O}_{2}}\] This reaction is called:

    A) Wurtz-Fitting reaction

    B) Hunsdicker reaction

    C) Hell-Volhard Zelensky reaction

    D) Hoffmann mustard oil reaction

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  • question_answer150) Pyrite are concentrated by the following method:

    A) gravity separation

    B) froth floatation

    C) roasting

    D) calcination

    View Answer play_arrow
  • question_answer151) The necessary condition for precipitation is:

    A) solubility product \[<\] ionic product

    B) solubility product \[>\] ionic product

    C) solubility product \[=\] ionic product

    D) none of these

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  • question_answer152) Which of the following reaction does not occurs?

    A) \[Cu+2AgN{{O}_{3}}\xrightarrow{{}}Cu{{(N{{O}_{3}}\text{)}}_{2}}+2Ag\]

    B) \[2KBr+{{I}_{2}}\xrightarrow{{}}2KI+B{{r}_{2}}\]

    C) \[Fe+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}FeS{{O}_{4}}+{{H}_{2}}\]

    D) \[CuO+{{H}_{2}}\xrightarrow{{}}Cu+{{H}_{2}}O\]

    View Answer play_arrow
  • question_answer153) \[HCHO+40%\]strong alkaline solution \[\xrightarrow{\,}\] one of the product is:

    A) \[C{{H}_{3}}OH\]

    B) \[C{{H}_{3}}C{{H}_{2}}OH\]

    C) \[C{{H}_{3}}COOH\]

    D) \[CH\equiv CH\]

    View Answer play_arrow
  • question_answer154) In which of the following reaction the oxidation and reduction complete?

    A) \[NaBr+HCl\text{ }\xrightarrow{{}}NaCl+\text{ }HBr\]

    B) \[HBr+AgN{{O}_{3}}\xrightarrow{{}}AgBr+HN{{O}_{3}}\]

    C) \[{{H}_{_{2}}}+B{{r}_{2}}\xrightarrow{{}}2HBr\]

    D) \[N{{a}_{2}}O+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}N{{a}_{2}}S{{O}_{4}}+{{H}_{2}}O\]

    View Answer play_arrow
  • question_answer155) Which of the following reaction is not affected by the change of pressure:

    A) \[{{N}_{2}}+{{O}_{2}}2NO\]

    B) \[{{N}_{2}}+3{{H}_{2}}2N{{H}_{3}}\]

    C) \[2S{{O}_{2}}+{{O}_{2}}2S{{O}_{3}}\]

    D) \[PC{{l}_{3}}+C{{l}_{2}}PC{{l}_{5}}\]

    View Answer play_arrow
  • question_answer156) Boiling point of ethyl alcohol is higher than dimethyl ether although the molecular weights of both are same. Its reason is:

    A) ethanol has hydrogen bond

    B) methyl groups are attached with oxygen in ether

    C) ether is insoluble in water

    D) dipole moment of ethanol is comparitively more

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  • question_answer157) No two electron of an atom can have the same set of four quantum numbers this statement is related to:

    A) Faults rule

    B) \[(n+l)\]rule

    C) Hunds rule

    D) Aufbaus principal

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  • question_answer158) Which of the following will give both iodoform test and Fehlings test?

    A) \[C{{H}_{3}}C{{H}_{2}}OH\]

    B) \[C{{H}_{3}}COC{{H}_{3}}\]

    C) \[C{{H}_{3}}CHO\]

    D) \[HCHO\]

    View Answer play_arrow
  • question_answer159) In the froth floatation process for the concentration of ore, the ore particles rise to the surface because ore particle:

    A) are light

    B) dont get wet by water

    C) are insoluble in water

    D) have electric charge

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  • question_answer160) \[C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}+C{{H}_{3}}COO{{C}_{2}}{{H}_{5}}\xrightarrow{{}}\] \[C{{H}_{3}}COC{{H}_{2}}COO{{C}_{2}}{{H}_{5}}+{{C}_{2}}{{H}_{5}}OH\] This reaction is called:

    A) Williamsons synthesis

    B) Esterification

    C) Trans esterification

    D) Claisen condensation

    View Answer play_arrow
  • question_answer161) Which is an amphoteric oxide?

    A) \[MgO\]

    B) \[{{K}_{2}}O\]

    C) \[A{{l}_{2}}{{O}_{3}}\]

    D) \[CuO\]

    View Answer play_arrow
  • question_answer162) For 2p-orbital:

    A) \[n=2,\]\[l=0\]

    B) \[n=2,\]\[l=1\]

    C) \[n=1,\]\[l=0\]

    D) \[n=1,\]\[l=2\]

    View Answer play_arrow
  • question_answer163) Alkaline hydrolysis of an ester is called:

    A) saponification

    B) hydrolysis

    C) neutralization

    D) hydrogenations

    View Answer play_arrow
  • question_answer164) Most of the alloys are made from the following type of element:

    A) f-block

    B) p-block

    C) d-block

    D) s-block

    View Answer play_arrow
  • question_answer165) In \[\pi \]bond and a bond i:

    A) \[9\sigma \,\,\,9\pi \]

    B) \[5\sigma \,\,\,9\pi \]

    C) \[9\sigma \,\,\,7\pi \]

    D) \[5\sigma \,\,\,8\pi \]

    View Answer play_arrow
  • question_answer166) Oxytocine is:

    A) a hormone

    B) an enzyme

    C) an antibody

    D) none of these

    View Answer play_arrow
  • question_answer167) Picric acid is:

    A) \[2,4,6\]-trinitro phenol

    B) \[2,4\]-dinitro phenol

    C) \[2,4,6\]-trinitro benzoic acid

    D) none of these

    View Answer play_arrow
  • question_answer168) The compound obtained by the reaction of \[C{{H}_{3}}\text{ }Mg\text{ }Br\]with formaldehyde is:

    A) \[C{{H}_{3}}COOH\]

    B) \[C{{H}_{3}}C{{H}_{2}}OH\]

    C) \[C{{H}_{3}}CHO\]

    D) \[HCOOH\]

    View Answer play_arrow
  • question_answer169) The correct sequence of die radius of an atom its cation and anion is:

    A) atom > cation > anion

    B) atom > cation = anion

    C) atom > cation > anion

    D) atom < cation > anion

    View Answer play_arrow
  • question_answer170) Which of the following is insoluble in concentrate sulphuric acid?

    A) Benzene

    B) Hexene

    C) Ethanol

    D) n-hexane

    View Answer play_arrow
  • question_answer171) \[C{{H}_{3}}C{{H}_{2}}I+NaOR\to C{{H}_{3}}C{{H}_{2}}OR+NaI\] This reaction is:

    A) Williamsons continuous etherification

    B) Curteus reaction

    C) Williamsons synthesis

    D) Wurtz reaction

    View Answer play_arrow
  • question_answer172) Conjugate base of \[HC{{O}_{3}}^{-}\] is:

    A) \[C{{O}_{3}}^{2-}\]

    B) \[C{{O}_{2}}\]

    C) \[{{H}_{2}}O\]

    D) \[{{H}_{2}}C{{O}_{3}}\]

    View Answer play_arrow
  • question_answer173) Saturated hydrocarbon gives:

    A) electrophilic substitution

    B) free radical substitution

    C) electrophilic addition

    D) free radical addition

    View Answer play_arrow
  • question_answer174) Ethylene can be prepared by the electrolysis of aqueous solution of:

    A) potassium formate

    B) potassium succinate

    C) potassium malate

    D) potassium turner ate

    View Answer play_arrow
  • question_answer175) \[{{N}_{2}}+{{O}_{2}}2NO,\] \[\Delta H=43.2kcal\] Forward reaction is favoured by:

    A) decrease in temperature

    B) decrease in pressure

    C) increase in pressure

    D) increase in temperature

    View Answer play_arrow
  • question_answer176) The electronic configuration of alkaline earth metal is:

    A) \[n{{s}^{2}}(n-1){{d}^{10}}\]

    B) \[n{{s}^{2}}\]

    C) \[n{{s}^{1}}\]

    D) \[n{{p}^{6}}\]

    View Answer play_arrow
  • question_answer177) \[{{C}_{2}}{{H}_{5}}CHO\] reacts with a base to give 3-hydroxybutanol. This reaction is called:

    A) Aldol condensation

    B) Claisens condensation

    C) Polymerization

    D) Riemer-Tiemann reaction

    View Answer play_arrow
  • question_answer178) Which of the following oxidation number is not zero?

    A) \[{{S}_{8}}\]

    B) \[{{P}_{4}}\]

    C) \[HCHO\]

    D) \[C{{H}_{4}}\]

    View Answer play_arrow
  • question_answer179) Absolute alcohol from rectified sprit can be prepared by:

    A) hydrolysis

    B) steam distillation

    C) azeotropic distillation

    D) fractional distillation

    View Answer play_arrow
  • question_answer180) Which of the following have ionic bond, covalent bond and co-ordinate bond?

    A) Water

    B) Ammonia

    C) Potassium bromide

    D) Copper sulphate pentahydrate

    View Answer play_arrow
  • question_answer181) This reaction is called:

    A) Deals Alder reaction

    B) Finkalstine reaction

    C) Gattermann reaction

    D) Riemer-Tiemann reaction

    View Answer play_arrow
  • question_answer182) Electropositive character in a period from left to right:

    A) first increases then decreases

    B) first decreases then increases

    C) decreases

    D) increases

    View Answer play_arrow
  • question_answer183) The product of the reaction of 2 mole of chloroform with \[4\text{ }mole\]of \[KOH\]:

    A) formic acid

    B) succinic acid

    C) potassium formate

    D) potassium chloride

    View Answer play_arrow
  • question_answer184) Bond angle and bond length in benzene are:

    A) \[{{120}^{o}}\]and \[1.39\overset{\text{o}}{\mathop{\text{A}}}\,\]

    B) \[{{120}^{o}}\] and \[154\overset{\text{o}}{\mathop{\text{A}}}\,\]

    C) \[{{180}^{o}}\] and \[1.33\overset{\text{o}}{\mathop{\text{A}}}\,\]

    D) \[{{120}^{o}}\] and \[1.34\overset{\text{o}}{\mathop{\text{A}}}\,\]

    View Answer play_arrow
  • question_answer185) A catalyst in a reversible equilibrium:

    A) increases the rate of backward reaction

    B) increase the rate of forward reaction

    C) increases the rate of forward and backward reaction with equal rate

    D) none of these

    View Answer play_arrow
  • question_answer186) Element with atomic number 33, the proton and number of atom have:

    A) \[33\]

    B) \[3\]

    C) \[6\]

    D) \[9\]

    View Answer play_arrow
  • question_answer187) High hydrocarbon change into low hydrocarbon, this process is known as:

    A) mining

    B) cracking

    C) isomerization

    D) hydroforming

    View Answer play_arrow
  • question_answer188) Which of the following can act as oxidant as well as reductant?

    A) \[{{H}_{2}}S{{O}_{4}}\]

    B) \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]

    C) \[{{H}_{2}}{{O}_{2}}\]

    D) \[NaOH\]

    View Answer play_arrow
  • question_answer189) Which of the following reagent will distinguish between propene and propyne:

    A) Bromine water

    B) \[{{[Ag{{(N{{H}_{3}})}_{2}}]}^{+}}\]

    C) Alkaline \[KMn{{O}_{4}}\]

    D) None of these

    View Answer play_arrow
  • question_answer190) Which of the following is dimagnetic?

    A) \[{{O}_{2}}^{-}\]

    B) \[NO\]

    C) \[{{O}_{2}}\]

    D) \[{{F}_{2}}\]

    View Answer play_arrow
  • question_answer191) Which of the following Hoffmann bromide reaction?

    A) \[C{{H}_{2}}COCl+C{{H}_{3}}OH\xrightarrow{{}}\]\[C{{H}_{2}}COOC{{H}_{3}}HCl\]

    B) \[C{{H}_{3}}CON{{H}_{2}}+B{{r}_{2}}+NaOH\xrightarrow{{}}\]\[C{{H}_{3}}N{{H}_{2}}+{{K}_{2}}C{{O}_{3}}+2KBr+2{{H}_{2}}O\]

    C) \[RCN+4H\xrightarrow{{}}RCHN{{H}_{2}}\]

    D) \[C{{H}_{3}}CN+2{{H}_{2}}\text{O}\xrightarrow{{}}C{{H}_{3}}COOC{{H}_{3}}\]

    View Answer play_arrow
  • question_answer192) What is the pH value of \[40ml\text{ }0.10M\,HCl\] solution combind with \[10ml\text{ }0.45M\] \[NaOH\]solution?

    A) \[12\]

    B) \[8\]

    C) \[10\]

    D) \[6\]

    View Answer play_arrow
  • question_answer193) Aromatic compound mainly gives:

    A) electrophilic substitution reaction

    B) nucleophilic substitution reaction

    C) nucleophilic addition reaction

    D) electrophilic addition reaction

    View Answer play_arrow
  • question_answer194) Lewis acid is:

    A) \[N{{O}_{2}}^{-}\]

    B) \[B{{F}_{3}}\]

    C) \[C{{l}^{-}}\]

    D) \[N{{H}_{3}}\]

    View Answer play_arrow
  • question_answer195) If the concentration of \[Cr{{O}_{4}}^{---}\] in saturated solution of \[AgCr{{O}_{4}},\] then the solubility product is:

    A) \[4\times {{10}^{-8}}\]

    B) \[8\times {{10}^{-12}}\]

    C) \[16\times {{10}^{-12}}\]

    D) \[32\times {{10}^{-12}}\]

    View Answer play_arrow
  • question_answer196) This reaction is called:

    A) Friedel Craft reaction

    B) Schmidt reaction

    C) Schotten Baumann reaction

    D) Gatter-mann reaction

    View Answer play_arrow
  • question_answer197) \[HCHO\]reacts with \[N{{H}_{3}}\]to give:

    A) formaldehyde

    B) formaltne

    C) hexamethylene

    D) formaldehyde ammonia

    View Answer play_arrow
  • question_answer198) Malachite is the ore of:

    A) \[Ag\]

    B) \[Al\]

    C) \[Fe\]

    D) \[Cu\]

    View Answer play_arrow
  • question_answer199) The following property is not shown by d-block elements:

    A) diamagnetism

    B) paramagnetism

    C) tendency to form complex compounds

    D) variable valency

    View Answer play_arrow
  • question_answer200) If the pH value of solution is 5 then what is the pOH value of solution?

    A) \[8\]

    B) \[20\]

    C) \[9\]

    D) \[21\]

    View Answer play_arrow
  • question_answer201) Metamorphosis in Cockroach is:

    A) complete

    B) incomplete

    C) holometabolous

    D) absent

    View Answer play_arrow
  • question_answer202) Which animal is extinct from India?

    A) Lion

    B) Tiger

    C) Dodo

    D) Cheetah

    View Answer play_arrow
  • question_answer203) Maximum BMR is present in:

    A) Frog

    B) Elephant

    C) Horse

    D) Rat

    View Answer play_arrow
  • question_answer204) In following layers, which layer is not penetrated by blood cells?

    A) Dermis

    B) External epidermis

    C) Muscles

    D) Hypodermal layer

    View Answer play_arrow
  • question_answer205) Which organ, converts urea into ammonia is?

    A) Kidney

    B) Testis

    C) Liver

    D) Intestine

    View Answer play_arrow
  • question_answer206) How many pairs of cranial nerves are present in Rabbit?

    A) 8 pairs

    B) 10 pairs

    C) 12 pairs

    D) 14 pairs

    View Answer play_arrow
  • question_answer207) Sensory organs of Ascaris are:

    A) papillae

    B) phasmid

    C) amphids

    D) all of the above

    View Answer play_arrow
  • question_answer208) In which mitosis does not takes place?

    A) Muscle cell

    B) Bone cell

    C) Epithelial cell

    D) Nerve cell

    View Answer play_arrow
  • question_answer209) Pseudopodia is characteristic of following class:

    A) Ciliata

    B) Sporozoa

    C) Sarcodina

    D) Mestigofora

    View Answer play_arrow
  • question_answer210) Cleavage occurs in:

    A) egg

    B) zygote

    C) nerve cell

    D) haploid cell

    View Answer play_arrow
  • question_answer211) Excretory organs of Earthworm are:

    A) body wall

    B) flame cells

    C) nephridia

    D) kidney

    View Answer play_arrow
  • question_answer212) If Hydra is divided into many pieces, then:

    A) each piece convert into complete Hydra

    B) only few pieces convert into complete Hydra

    C) Hydra will be dead

    D) Hydra will reproduce very fast

    View Answer play_arrow
  • question_answer213) Male Cockroach is differ from female Cockroach because in this present:

    A) anal cirrae

    B) anal styles

    C) antennae

    D) mandible

    View Answer play_arrow
  • question_answer214) Who controls the concentration of calcium?

    A) Hypothalamus

    B) Thyroid

    C) Pituitary gland

    D) Thyroid and parathyroid

    View Answer play_arrow
  • question_answer215) A cell in take external substances through:

    A) phagocytesis

    B) pinocytosis

    C) endocytosis

    D) all of the above

    View Answer play_arrow
  • question_answer216) Function of golgi body is:

    A) synthesis of protein

    B) synthesis of lipid

    C) synthesis of carbohydrate

    D) oxidative phosphorylation

    View Answer play_arrow
  • question_answer217) Which is not carbohydrate?

    A) Cellulose

    B) Glucose

    C) Starch

    D) Wax

    View Answer play_arrow
  • question_answer218) Formation of glycogen from glucose is called:

    A) glycolysis

    B) Krebs cycle

    C) citric acid cycle

    D) glycogcnesis

    View Answer play_arrow
  • question_answer219) Nerve cells are present in:

    A) Amoeba

    B) Sycon

    C) Paramecium

    D) Hydra

    View Answer play_arrow
  • question_answer220) Which of the following doesnt spread disease in human?

    A) Entamoeba histolytica

    B) Entamoeba gingiualis

    C) Entamoeba coli

    D) Plasniodiimi ovale

    View Answer play_arrow
  • question_answer221) Number of testis present in Ascaris:

    A) one

    B) two

    C) three

    D) four

    View Answer play_arrow
  • question_answer222) In which part of Cockroach exoskeleton is in vaginated:

    A) proctodium

    B) stomodium

    C) mesenteron

    D) both a and b

    View Answer play_arrow
  • question_answer223) Which is not present in protein?

    A) Carbon

    B) Sulphur

    C) Nitrogen

    D) Phosphorus

    View Answer play_arrow
  • question_answer224) Following is not present in prokaryocic cell:

    A) smooth ER

    B) mitochondria

    C) golgi body

    D) all the above

    View Answer play_arrow
  • question_answer225) Nucleic acids are made up of:

    A) nucleosides

    B) nucleotides

    C) sugar

    D) amino acid

    View Answer play_arrow
  • question_answer226) Maximum quantity of iron present in:

    A) red blood cells

    B) white blood cells

    C) bone cells

    D) muscle cells

    View Answer play_arrow
  • question_answer227) Which organ is power house of cell?

    A) Nucleus

    B) Mitochondria

    C) Golgi body

    D) Lysosome

    View Answer play_arrow
  • question_answer228) Which of the following only one host is present in life cycle?

    A) Entamoeba histolytica

    B) Plasmodium

    C) Taenia

    D) Liver fluke

    View Answer play_arrow
  • question_answer229) By which process, oxidation of pyruvic acid gives \[C{{O}_{2}}\] and \[{{H}_{2}}O\]?

    A) Krebs cycle

    B) Tricarboxylic acid cycle

    C) Citric acid cycle

    D) Glycogenesis

    View Answer play_arrow
  • question_answer230) Living substance of cell is called:

    A) cytoplasm

    B) nucleoplasm

    C) protoplasm

    D) mitochondrial liquid

    View Answer play_arrow
  • question_answer231) Which is not Chordate characteristic?

    A) Notochord

    B) Placenta

    C) Dorsal tubular nerve chord

    D) Phryngeal gill slits

    View Answer play_arrow
  • question_answer232) Red blood corpuscles of Rabbit are :

    A) round and biconvex

    B) oval and biconvex

    C) round and biconcave

    D) oval and biconcave

    View Answer play_arrow
  • question_answer233) Which ions help is blood coagulation?

    A) \[{{K}^{+}}\]

    B) \[C{{a}^{++}}\]

    C) \[M{{g}^{++}}\]

    D) \[N{{a}^{+}}\]

    View Answer play_arrow
  • question_answer234) Pancreas secretes;

    A) insulin

    B) glucagon

    C) digestive enzymes

    D) all the above

    View Answer play_arrow
  • question_answer235) Which of the following is absent in heart of Rabbit?

    A) left auricle

    B) left ventricle

    C) sinus venosus

    D) pace maker

    View Answer play_arrow
  • question_answer236) Glochidium larva presents in :

    A) Bivalvia

    B) Gastropoda

    C) Cephalopoda

    D) Arthropoda

    View Answer play_arrow
  • question_answer237) Retrogressive metamorphosis is present in:

    A) Frog

    B) Rabbit

    C) Rat

    D) none of the above

    View Answer play_arrow
  • question_answer238) Choanocytes present in animals of following phylum :

    A) Protozoa

    B) Porifera

    C) Coelenterata

    D) Ptenophora

    View Answer play_arrow
  • question_answer239) Non-poisonous snake is :

    A) Python

    B) Viper

    C) Cobra

    D) Krat

    View Answer play_arrow
  • question_answer240) Arteries which carries blood to diaphragm :

    A) cardiac

    B) phrenic

    C) comary

    D) pulmonary

    View Answer play_arrow
  • question_answer241) Insects egg is:

    A) homolecithal

    B) mesolecithal

    C) centerolecithal

    D) microlecithal

    View Answer play_arrow
  • question_answer242) Which hormone is not synthesized in pituitary gland?

    A) Growth hormone

    B) FSH

    C) ACTH

    D) Vassoprcssin

    View Answer play_arrow
  • question_answer243) Structure derived from ectoderm:

    A) liver

    B) muscles

    C) brain

    D) mesenteries

    View Answer play_arrow
  • question_answer244) Contraction in pupil of eye is due to:

    A) dimlight

    B) bright light

    C) darkness

    D) maximum temperature

    View Answer play_arrow
  • question_answer245) In which group, notochord is restricted to only anterior region ?

    A) Hemichordata

    B) Urochordata

    C) Cephalochordata

    D) Chordata

    View Answer play_arrow
  • question_answer246) How many lobes are present in each cerebral hemisphere?

    A) Two

    B) Four

    C) Six

    D) Eight

    View Answer play_arrow
  • question_answer247) Body cavity if formed by in vagination of:

    A) apomere

    B) hypomere

    C) mcsomere

    D) both b and c

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  • question_answer248) First flying animals were :

    A) Mammals

    B) Birds

    C) Insects

    D) Reptile

    View Answer play_arrow
  • question_answer249) Food of tadpole (Frog) is :

    A) aquatic animals

    B) aquatic insects

    C) eggs of fishes

    D) aquatic vegetation

    View Answer play_arrow
  • question_answer250) Cerebral malaria is spread by following :

    A) Plasmodium uivax

    B) Plasmodium ouale

    C) Plasmodium Falciparum

    D) Plasmodium malariae

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  • question_answer251) In Rabbit, exoskeleton is in the form of :

    A) hair

    B) nails

    C) hoof

    D) both a and b

    View Answer play_arrow
  • question_answer252) Polyp stage is not present in :

    A) Hydrozoa

    B) Scyphozoa

    C) Anthozoa

    D) Calcarea

    View Answer play_arrow
  • question_answer253) Both cerebral hemisphere are joined by transverse septum which is made up of white matter fibres are called :

    A) corpus callosum

    B) corpus albicans

    C) corpus spongiossum

    D) corpus stratum

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  • question_answer254) Archenter one is covered by :

    A) ectoderm

    B) endoderm

    C) mesoderm

    D) both b and c

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  • question_answer255) Structure formed due to cleavage is:

    A) zygote

    B) morula

    C) gastrula

    D) neurulla

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  • question_answer256) Function of chloragogen cells of Earthworm is:

    A) digestion

    B) locomotion

    C) excretion

    D) respiration

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  • question_answer257) Hydrolytic enzymes are present in :

    A) lysosome

    B) mesosomes

    C) chondriosome

    D) endoplasmic reticulum

    View Answer play_arrow
  • question_answer258) Which is nut protein ?

    A) Actin

    B) Myosine

    C) Albumin

    D) Haeme

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  • question_answer259) In which part of Cockroach both exoskeleton and endoskeleton present?

    A) Mead

    B) Thorax

    C) Abdomen

    D) All of the above

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  • question_answer260) Effective organ for intake of food in Earthworm is:

    A) mouth

    B) buccal cavity

    C) pharynx

    D) stomach

    View Answer play_arrow
  • question_answer261) If nucleus of Amoeba is degenerated, what will be the effect?

    A) Divide immediately

    B) Dead after some time

    C) No change

    D) Rate of growth will be fast

    View Answer play_arrow
  • question_answer262) Infant/juvenile stage of Cockroach is called:

    A) maggot

    B) nymph

    C) zoea

    D) grub

    View Answer play_arrow
  • question_answer263) Dysentery disease spread by :

    A) Amoeba

    B) Entamoeba histolytica

    C) Plasmodium

    D) Entamoeba coli

    View Answer play_arrow
  • question_answer264) Anaema disease is due to the lack of :

    A) calcium

    B) copper

    C) iron

    D) zinc

    View Answer play_arrow
  • question_answer265) Protein synthesis takes place in :

    A) golgi body

    B) plasma membrane

    C) smooth endoplasmic reticulum

    D) none of the above

    View Answer play_arrow
  • question_answer266) Quantity of nucleic acid present in cell is approximately :

    A) 2%

    B) 5%

    C) 10%

    D) 15%

    View Answer play_arrow
  • question_answer267) Pseudopodia formed, when:

    A) interchange of sol-gel state

    B) Amoeba comes in contact with cold water

    C) Amoeba comes in contact with hot water

    D) Amoeba comes in contact with food

    View Answer play_arrow
  • question_answer268) Sperms of Hydra formed from :

    A) interstitial cells

    B) epithelial muscular layer

    C) nerve cells

    D) all of the above

    View Answer play_arrow
  • question_answer269) In which part of Earthworm setae are absent ?

    A) in prostomium

    B) in prostomium and clitellum

    C) clitellum region

    D) clitellum/ first and last segment

    View Answer play_arrow
  • question_answer270) Why does the colour of blood is red in Earthworm?

    A) Due to intracellular haemoglobin

    B) Due to intercellular haemoglobin

    C) Due to red blood corpuscles

    D) Due to white blood corpuscles

    View Answer play_arrow
  • question_answer271) Eggs in which the amount of yolk is very minute, are called :

    A) alecithal

    B) microlecithal

    C) mesolecithal

    D) telolecithal

    View Answer play_arrow
  • question_answer272) Food of Hydra is :

    A) aquatic plants

    B) aquatic animals

    C) algae and insects

    D) small fishes

    View Answer play_arrow
  • question_answer273) Excretory substance of Amoeba is:

    A) ammonia

    B) urea

    C) uric acid

    D) guanine

    View Answer play_arrow
  • question_answer274) Which is not covered by external limiting line boundary?

    A) Ribosome

    B) Centrosome

    C) Lysosome

    D) Spindle

    View Answer play_arrow
  • question_answer275) By which process glucose is converted into \[C{{O}_{2}}\] and \[{{H}_{2}}O\]?

    A) Glycolysis

    B) Krebs cycle

    C) Pentose phosphate shunt

    D) All of the above

    View Answer play_arrow
  • question_answer276) Calcium is necessary for:

    A) growth of bone and teeth

    B) muscle contraction

    C) blood coagulation

    D) all of the above

    View Answer play_arrow
  • question_answer277) Recapitulation theory was established by:

    A) Muller

    B) Von Baer

    C) Haeckel

    D) both a and c

    View Answer play_arrow
  • question_answer278) Which part of Cockroach wings are not present ?

    A) Prothorax

    B) Mesothorax

    C) Metathorax

    D) None of above

    View Answer play_arrow
  • question_answer279) Entamoeba histolytion is different from Amoeba, because it does not possess:

    A) food vacuole

    B) contractile vacuole

    C) nucleus

    D) nuclear membrane

    View Answer play_arrow
  • question_answer280) Neoteny is present in :

    A) Hyla

    B) Tadpole

    C) Axolotal

    D) Salamander

    View Answer play_arrow
  • question_answer281) Prene glands are present in :

    A) Amphibia

    B) Reptiles

    C) Birds

    D) Mammals

    View Answer play_arrow
  • question_answer282) In which endoskeleton is made up of cartilage?

    A) Dipnoi

    B) Mollusca

    C) Elasmobranchii

    D) Bony fishes

    View Answer play_arrow
  • question_answer283) What is present in Cestoda class?

    A) Absence of alimentary canal

    B) Metamerically segmented body

    C) Suckers and hook present

    D) All the above

    View Answer play_arrow
  • question_answer284) DNA is also present in following:

    A) golgi body

    B) lysosome

    C) mitochondria

    D) ribosome

    View Answer play_arrow
  • question_answer285) Acrosome of sperm is formed from:

    A) nucleus

    B) mitochondria

    C) ribosome

    D) golgi body

    View Answer play_arrow
  • question_answer286) Respiratory centre for controlling respiration is situated in:

    A) medulla oblongata

    B) cerebellum

    C) vagus nerve

    D) cerebral hemisphere

    View Answer play_arrow
  • question_answer287) Sea horse is an example of:

    A) Mammalia class

    B) Aves class

    C) Pisces class

    D) Reptile class

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  • question_answer288) Which animal is not insect?

    A) Ticks

    B) Honey bee

    C) Beetal

    D) Wasps

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  • question_answer289) Archaeopteryx possess the characteristic of following :

    A) Reptiles

    B) Birds

    C) Amphibia and Reptiles

    D) Reptiles and Birds

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  • question_answer290) In which phylum, cilia are completely absent?

    A) Annelida

    B) Mollusca

    C) Arthropoda

    D) Porifera

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  • question_answer291) Hypothalamus is controlling centre of:

    A) hunger and thirst

    B) temperature

    C) sleep

    D) all of the above

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  • question_answer292) Only one primary spermatocyte formed :

    A) one sperm

    B) two sperms

    C) three sperms

    D) four sperms

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  • question_answer293) Which organ absorbs maximum quantity of iodine?

    A) Thyroid

    B) Liver

    C) Stomach

    D) Pancreas

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  • question_answer294) In grey matter following is present:

    A) cyton, axon, dendrites

    B) dendrites

    C) axon

    D) none of the above

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  • question_answer295) Kangaroo is member of following order:

    A) primate

    B) chiroptera

    C) marsupelia

    D) monotremata

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  • question_answer296) Hydra is:

    A) triploblastic

    B) diploblastic

    C) asymmetric

    D) bisymmetric

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  • question_answer297) Non-stripped muscles are present:

    A) in arteries

    B) in veins

    C) in urinary bladder

    D) all of the above

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  • question_answer298) Most useful organ of Rabbit is:

    A) adrenal medulla

    B) testis

    C) ovary

    D) adrenal cortex

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  • question_answer299) In which animal poison gland is present?

    A) Male Platypus

    B) Female Lizard

    C) Male Lizard

    D) Frog

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  • question_answer300) Coelom of Ascaris is called:

    A) schizocoelom

    B) enterocoelom

    C) pseudocoelom

    D) acoelom

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  • question_answer301) The biggest herbarium of India is situated in:

    A) Dehradun

    B) Lucknow

    C) Delhi

    D) Calcutta

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  • question_answer302) What is the reason for red colour of snow in snowy region?

    A) Chlamydomonas nivalis

    B) Chlamydomonas yellowstonensis

    C) Chlorella

    D) None of the above

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  • question_answer303) Food, habitat and economic importance of plants are studied in:

    A) Genetics

    B) Microbiology

    C) Phycology

    D) Economic botany

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  • question_answer304) The synthesis of florigen occurs in:

    A) root

    B) leaf

    C) branch

    D) stem

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  • question_answer305) The functional unit of chlorophyll is:

    A) stroma

    B) grana

    C) quantosome

    D) oxysome

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  • question_answer306) Chiasmatas appear in which of the following phase?

    A) Zygotene

    B) Diplotene

    C) Pachytene

    D) Diakinesis

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  • question_answer307) Mutations are:

    A) mostly useful

    B) harmful

    C) always useful

    D) sometimes useful

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  • question_answer308) Which of the following accept \[C{{O}_{2}}\] in photosynthesis ?

    A) RuDP

    B) ATP

    C) ADP

    D) PGA

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  • question_answer309) The value of R. Q. in organic acid will be:

    A) one

    B) less than one

    C) more than one

    D) none of the above

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  • question_answer310) The movement of Mimosa pudica is :

    A) seismonastic

    B) chemotrophic

    C) geotrophic

    D) none of the above

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  • question_answer311) Who proposed the chromosomal theory of in heritance?

    A) Bateson

    B) Mendel

    C) Robert Hook

    D) W.S. Sutton and Boveri

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  • question_answer312) Double helical structure of DNA was proposed by:

    A) Robert Brown

    B) Watson and Crick

    C) H.G. Khorana

    D) Sutton and Boveri

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  • question_answer313) Ribosome is consist of:

    A) RNA and protein

    B) DNA and protein

    C) DNA and RNA

    D) DNA, RNA and protein

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  • question_answer314) The reserve food material in fungi is:

    A) starch

    B) protein

    C) fat

    D) glycogen

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  • question_answer315) Artificial synthesis of gene was first time done by :

    A) H. G. Khorana

    B) Hertwig

    C) Strassburger

    D) none of these

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  • question_answer316) The main plant body of bryophyta is:

    A) gametophytic

    B) sporophytic

    C) thallus

    D) none of the above

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  • question_answer317) Who proposed the central dogma?

    A) Crick

    B) Khorana

    C) Nirenberg

    D) None of these

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  • question_answer318) Product of \[C{{O}_{2}}\] reduction is:

    A) pyruvic acid

    B) citric acid

    C) tri carboxylic acid

    D) glucose

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  • question_answer319) Embryo formation, without fertilization is called:

    A) apogamy

    B) parthenogenesis

    C) apomixis

    D) none of the above

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  • question_answer320) Cotton fibre is made up if:

    A) cellulose

    B) protein

    C) fat

    D) starch

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  • question_answer321) Calotropis and Capparis ecologically grouped under:

    A) hydrophytes

    B) xerophytes

    C) mesophytes

    D) halophytes

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  • question_answer322) During \[{{C}_{4}}\] pathway, first \[C{{O}_{2}}\] fixation takes place in chloroplast of:

    A) guard cells

    B) mesophyll cells

    C) spongy parenchyma

    D) bundle sheath cells

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  • question_answer323) Who proposed the histogen theory?

    A) Schmit

    B) Hanstein

    C) Nagelli

    D) Mankey

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  • question_answer324) Primary tissuess are formed from:

    A) apical and lateral meristem

    B) lateral meristem

    C) intercalary and apical meristem

    D) none of the above

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  • question_answer325) Division in anthers is:

    A) amitosis

    B) meiosis

    C) mitosis

    D) budding

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  • question_answer326) Purine bases are:

    A) A and T

    B) A and C

    C) A and G

    D) T and C

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  • question_answer327) When a well irrigated herb plants stem is cut, then xylem sap comes out due to the:

    A) wall pressure

    B) root pressure

    C) osmatic pressure

    D) endosmosis

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  • question_answer328) Velamen tissue is the characteristic feature of:

    A) parasitic plants

    B) epiphytic plants

    C) saprophytic plants

    D) all of the above

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  • question_answer329) The plant, which does not follow Mendels law of dominance is:

    A) Mirabilis jalapa

    B) Pea

    C) Gram

    D) Chandni

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  • question_answer330) Who discovered thylakoid?

    A) Mankey

    B) Nagelli

    C) Hanstein

    D) Schmit

    View Answer play_arrow
  • question_answer331) Chipko movement was started from:

    A) Gwalior-(M.P.)

    B) GarhwaI-(Uttranchal)

    C) Jodhpur-(Rajasthan)

    D) Alwar-(Rajasthan)

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  • question_answer332) 9 : 3 : 3 : 1 follows the Mendels law of:

    A) unit characters

    B) dominance

    C) independent assortment

    D) purity of gametes

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  • question_answer333) Cross between \[{{F}_{1}}\] generation and pure recessive parent is called:

    A) test cross

    B) back cross

    C) monohybrid cross

    D) none of the above

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  • question_answer334) Genome is the set of chromosomes which remains:

    A) diploid

    B) haploid

    C) triploid

    D) none of these

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  • question_answer335) The position of stomata in Vallisneria is:

    A) adaxial or abaxial

    B) abaxial or adaxial

    C) amphistomatal

    D) absent

    View Answer play_arrow
  • question_answer336) Usually root and stomata are absent in:

    A) hydrophytic plants

    B) xerophytic plants

    C) mesophytic plants

    D) halophytic plants

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  • question_answer337) Mendels laws were rediscovered in:

    A) 1890

    B) 1900

    C) 1800

    D) 1905

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  • question_answer338) Which of the following are nonrenewable resources?

    A) Minerals and fossils

    B) Minerals and water

    C) Minerals and soil

    D) None of the above

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  • question_answer339) In pond ecosystem, the maximum number is represented by;

    A) producers

    B) consumers

    C) decomposers

    D) none of these

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  • question_answer340) If decomposers are removed from an ecosystem then which of the following will affected?

    A) Producers

    B) Biosphere

    C) Bio-geochemical cycle

    D) Consumers

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  • question_answer341) Tuberculosis (T.B.) causing bacterium is:

    A) Bacillus coli

    B) Mycobacterium tuberculosis

    C) Vibrio cholera

    D) E. coli

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  • question_answer342) Quinine is obtained from which part of Cinchona plant?

    A) Bark

    B) Leaf

    C) Root

    D) Flower

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  • question_answer343) Commercial cork is obtained from:

    A) Quercus suber

    B) Peepal

    C) Pinus

    D) Mango

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  • question_answer344) Which of the following medicine is used to reduce the blood pressure?

    A) Papavaerin

    B) Reserpine

    C) Gugal

    D) Gum

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  • question_answer345) What is the relationship between food web and stability of an ecosystem?

    A) If higher the complexity of web the stability will be high

    B) Simpler the web/ higher the stability of system.

    C) More the webs, lower stability

    D) None of the above

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  • question_answer346) Opium is obtained from:

    A) root

    B) stem

    C) immature fruit

    D) leaf

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  • question_answer347) The main source of energy in alt organisms is:

    A) water

    B) sun light

    C) nuclear energy

    D) all of the above

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  • question_answer348) Whole inflorescence is edible in:

    A) Cauliflower

    B) Tomato

    C) Brinjal

    D) Ladys finger

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  • question_answer349) Annual rings formed in:

    A) monocot stem

    B) monocot root

    C) dicot stem

    D) dicot root

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  • question_answer350) Pulses belongs to family:

    A) Malvaceae

    B) Leguminosae

    C) Cruciferae

    D) Solanaceae

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  • question_answer351) Genetic code on nucleic acid is represented by:

    A) type of nucleic acid

    B) number of nucleic acid

    C) linear sequence of nucleic acid

    D) all of the above

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  • question_answer352) The relation between DPD, OF and TP is:

    A) \[\text{DPD=OP+TP}\]

    B) \[\text{DPD+OP-TP}\]

    C) \[\text{DPD=}\frac{\text{OP}}{\text{TP}}\]

    D) none of the above

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  • question_answer353) Axile placentation is present in family:

    A) Malvaceae and Liliaceae

    B) Cruciferae

    C) Cruciferae and Malvaceae

    D) All of the above

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  • question_answer354) Monothecous anther is the characteristic of family;

    A) Malvaceae

    B) Liliaceae

    C) Solanaceae

    D) Cruciferae

    View Answer play_arrow
  • question_answer355) The floral formula of family Cruciterae is:

    A) \[Ebr\,\oplus \,_{\begin{smallmatrix} O \\ + \end{smallmatrix}}^{\uparrow }\,{{K}_{2+2}}{{C}_{\times 4}}{{A}_{2+4}}{{G}_{(\underline{2})}}\]

    B) \[\,\oplus \,_{\begin{smallmatrix} O \\ + \end{smallmatrix}}^{\uparrow }\,{{K}_{4}}{{C}_{4}}{{A}_{6}}{{G}_{(2)}}\]

    C) \[\,%\,_{\begin{smallmatrix} O \\ + \end{smallmatrix}}^{{}}\,{{K}_{6}}{{C}_{5}}{{A}_{7}}{{G}_{(2)}}\]

    D) \[Ebr\,%\,_{\begin{smallmatrix} O \\ + \end{smallmatrix}}^{{}}\,{{K}_{4+4}}{{C}_{4}}{{A}_{4+4}}\,{{G}_{(\underline{2})}}\]

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  • question_answer356) Sterile stamens are found in:

    A) Cassia fistula (amaltas)

    B) Solanum

    C) Raphanus sativus

    D) Pisum

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  • question_answer357) Viviparous reproduction is the characteristic of:

    A) Tinospora

    B) Xanthomonas

    C) Nitrosomonas

    D) Rhizophora

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  • question_answer358) The rhizoids of Riccia are:

    A) unicellular and unbranched

    B) unicellular and branched

    C) multicellular and unbranched

    D) none of the above

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  • question_answer359) The gametophytc generation is dominant in:

    A) gymnosperm

    B) bryophyte

    C) angiosperm

    D) pteridophyta

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  • question_answer360) Bicollateral vascular bundles are the characteristic of family:

    A) Malvaceae

    B) Liliaceae

    C) Cucurbitaceae

    D) Leguminoseae

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  • question_answer361) Water is not required in the fertilization of which of die following ?

    A) Riccia

    B) Albugo

    C) Pteridium

    D) Ulothrix

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  • question_answer362) The male gamete of fem is:

    A) aflagellate

    B) uniflagcllate

    C) biflagellate

    D) multiflagellate

    View Answer play_arrow
  • question_answer363) Hyphae of Albugo are:

    A) aseptate and multinucleate

    B) septate and multinucleate

    C) aseptate and uninucleate

    D) septate and multinucleate

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  • question_answer364) Cell organelte covered by unit membrane is:

    A) ribosome

    B) lysosome

    C) mitochondria

    D) chloroplast

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  • question_answer365) Glycolysis takes place in:

    A) mitochondria

    B) cytoplasm

    C) chloroplast

    D) lysosome

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  • question_answer366) Extra nuclear DNA is found in:

    A) chloroplast

    B) mitochondria

    C) both (a) and (b)

    D) none of these

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  • question_answer367) Cohesion theory was proposed by:

    A) Dixon and Jolly

    B) Boss

    C) Vadelloveshky

    D) Muller

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  • question_answer368) Guttation occurs maximum at which time:

    A) noon

    B) morning

    C) evening

    D) night

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  • question_answer369) How many nucleus take part in the double fertilization of Capsella?

    A) 4

    B) 5

    C) 2

    D) 3

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  • question_answer370) Symbiotic relation of an alga and fungus is called:

    A) Lichen

    B) Mycorrhiza

    C) Cuscuta

    D) Orchid

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  • question_answer371) The father of taxonomy is:

    A) Carl Linnaeus

    B) Charles Darwin

    C) Bentham and Hooker

    D) None of the above

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  • question_answer372) The anthers of Capsella are:

    A) haploid

    B) diploid

    C) triploid

    D) none of these

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  • question_answer373) Photosynthetic lamellae in bacteria are found in:

    A) cytoplasm

    B) chromoplast

    C) leucoplast

    D) none of the above

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  • question_answer374) In Ulothrix, the number of chloroplast per cell is;

    A) 1

    B) 2

    C) 3

    D) 4

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  • question_answer375) Unit which shows henditary characters is:

    A) neutron

    B) cistron

    C) operon

    D) heptanes

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  • question_answer376) The largest botanical garden of world is:

    A) Indian botanical garden, Calcutta

    B) Royal botanical garden, (Kew) England

    C) Paris botanical garden

    D) None of these

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  • question_answer377) Nodulated roots are found in:

    A) Malvaceae

    B) Leguminosae

    C) Solanaceae

    D) Compositae

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  • question_answer378) Mineral salt from soil enters into the cell in the form of:

    A) salts

    B) molecules

    C) ions

    D) none of these

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  • question_answer379) Which of the following is not emit \[C{{O}_{2}}\] in the environment?

    A) Nuclear energy

    B) Oil

    C) Coal

    D) Gas

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  • question_answer380) Which of the following is needed to make soil from sand?

    A) Organic matter

    B) Soil air

    C) Soil water

    D) None of these

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  • question_answer381) Mendels laws were rediscovered by:

    A) de Vries in Holland

    B) Bateson in England

    C) Nellson in Sweden

    D) Linnaeus in England

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  • question_answer382) The active nucleus is absent in which of the following cell?

    A) Vessel cell

    B) Seive tube

    C) Tracheid

    D) All of the above

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  • question_answer383) 50% time of total cell division is taken by:

    A) \[{{G}_{1}}^{-}\]phase

    B) S-phase

    C) \[{{G}_{2}}-\]phase

    D) M-phase

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  • question_answer384) Selective permeability is the characteristic of:

    A) cell wall

    B) cell membrane

    C) cytoplasm

    D) none of these

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  • question_answer385) Only thallus type plant body is the characteristic of which of the following group?

    A) Algae

    B) Pteridophyta

    C) Bryophyta

    D) Gymnospcrm

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  • question_answer386) Respiratory enzymes are found in:

    A) mitochondria

    B) granum

    C) chloroplast

    D) none of these

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  • question_answer387) Oval and eccentric starch granules are present in:

    A) Rice

    B) Maize

    C) Potato

    D) Ground nut

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  • question_answer388) The antibiotic obtained from Streptomyces griseus is:

    A) streptomycin

    B) chloromycin

    C) both (a) and (b)

    D) none of these

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  • question_answer389) MAB is:

    A) man and biosphere

    B) man, antibody and bacteria

    C) Mayer, Addition, Bisbai

    D) Man and biology

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  • question_answer390) Lichens are the indicator of:

    A) water pollution

    B) air pollution

    C) soil pollution

    D) sound pollution

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  • question_answer391) The function of cytokinin is:

    A) cell division

    B) delayin senescence

    C) breaking the dormancy

    D) all of the above

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  • question_answer392) \[\text{IAA}\] inhibits the growth of:

    A) root

    B) leaf

    C) stem

    D) none of these

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  • question_answer393) Lenticels are found in:

    A) monocot root

    B) monocot stem

    C) old dicot stem

    D) none of these

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  • question_answer394) The father of Botany is:

    A) Linnaeus

    B) Theophrastus

    C) Bentham

    D) Hooker

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  • question_answer395) Which of the following is male gamete?

    A) Androecium

    B) Anther

    C) Pollen

    D) None of these

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  • question_answer396) The ovule found in about 80% plants is:

    A) orthotropous

    B) anatropous

    C) semi-anatropous

    D) none of these

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  • question_answer397) Egg apparatus contains:

    A) two antipodals and single egg cell

    B) one antipodal and two egg cells

    C) one antipodal and three egg cells

    D) all of the above

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  • question_answer398) The shape of vascular bundles in monocot is:

    A) D

    B) H

    C) Y

    D) Z

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  • question_answer399) Which of the following is absent in gymnosperm?

    A) Companion cell

    B) Sieve tube

    C) Tracheid

    D) All of these

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  • question_answer400) The pyramid which remains up right is:

    A) pyramid of biomass

    B) pyramid of number

    C) pyramid of energy

    D) None of the above

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