# Solved papers for RAJASTHAN ­ PMT Rajasthan - PMT Solved Paper-2004

### done Rajasthan - PMT Solved Paper-2004

• question_answer1) The power loss in pure inductor in an A.C. circuit will be:

A) ${{V}_{rms}}$${{I}_{rms}}$

B) more

C) zero

D) none of these

• question_answer2) The potential difference across BC in the following figure will he:

A) 1.2 V

B) 2 V

C) 0.8 V

D) 1 V

• question_answer3) The distance between the ends of wings of an aeroplane is 5 m. The aeroplane is moving with velocity of 200 km/sec in a magnetic field of 10 T. The emf induced across the ends of wings will be:

A) ${{10}^{7}}$ volt

B) 10 volt

C) ${{10}^{6}}$ volt

D) none of these

• question_answer4) Between the proton and neutron in a nucleus:

A) nuclear force is greater than gravitational force

B) gravitational force is greater than nuclear force

C) electromagnetic force is lesser than gravitational force

D) nuclear force is greater than electromagnetic force

A) potential difference

B) internal resistance

C) current

D) external resistance

• question_answer6) The magnetic field $\vec{B}$ in a circular coil does not depend on:

A) current

C) number of turns

D) area

• question_answer7) Results obtained due to eddy currents is:

A) high efficiency between coils of Trans former

B) low efficiency between coils of transformer

C) loss of heat in core of trans former

D) none of these

• question_answer8) The radius of gyration of a hollow spherical shell is 2.5 J. If its frequency of rotation is made 10 times, then new kinetic energy will be:

A) 250 J

B) 0.25 J

C) 2500 J

D) 2.5 J

• question_answer9) if a square coil is making an angle $60{}^\circ$ with electric field E according to figure the electric flux passing through the square coil is (the side of square is 4 cm):

A) 853 E

B) 8 E

C) 16 E

D) none of these

• question_answer10) An ideal gas is carried along the cycle ABCA as shown in figure. The net heat given to gas in cycle is 5J. In process$C\to A,$ the work done by the gas is:

A) -5J

B) -10 J

C) -20 J

D) -15 J

• question_answer11) The transition corresponding to first line of Balmer series will be:

A) ${{n}_{2}}\to {{n}_{1}}$

B) ${{n}_{3}}\to {{n}_{2}}$

C) ${{n}_{6}}\to {{n}_{2}}$

D) none of these

• question_answer12) The moment of inertia of a solid sphere about its tangential axis will be:

A) $\frac{2}{5}M{{R}^{2}}$

B) $\frac{7}{5}M{{R}^{2}}$

C) $\frac{5}{3}M{{R}^{2}}$

D) $\frac{2}{3}M{{R}^{2}}$

• question_answer13) The time period of a vibrating spring due to a mass m is T. For twice of its mass, the new time period will be:

A) $\sqrt{2}T$

B) $2\sqrt{2}T$

C) $4T$

D) $5T$

• question_answer14) On a magnetic needle placed in a uniform magnetic field:

A) $F\ne 0,\,\,\,\tau \ne 0$

B) $F\ne 0,\,\,\,\tau =0$

C) $F=0,\,\,\,\tau \ne 0$

D) $F=0,\,\,\,\tau =0$

• question_answer15) The total energy of disc of mass M and velocity v rolling an inclined plane without slipping is:

A) $\frac{3}{4}M{{\upsilon }^{2}}$

B) $\frac{2}{5}M{{\upsilon }^{2}}$

C) $\frac{3}{2}M{{\upsilon }^{2}}$

D) $1\frac{1}{3}M{{\upsilon }^{2}}$

• question_answer16) The path of a charged particle entering perpendicularly in a uniform electric field will be:

A) linear

B) parabolic

C) circular

D) elliptical

• question_answer17) The vector projection of a vector $3\hat{i}+4\hat{k}$on y-axis is:

A) 5

B) 4

C) 3

D) zero

• question_answer18) In an A.C. circuit containing capacitor:

A) the current leads the potential difference in phase

B) the potential difference leads the current in phase

C) the potential difference and current are m phase

D) none of these

• question_answer19) The work function of a metal is:

A) the energy for the electron to enter into the metal

B) the energy for producing X-ray

C) the energy for the electron to come out from metal, surface

D) none of these

• question_answer20) In nuclear fission, 0.1% mass is converted into energy. The energy released by the fission of 1 kg mass is:

A) $2.5\times {{10}^{7}}\,kWh$

B) $2.5\,\times {{10}^{3}}kWh$

C) $2.5\,\times {{10}^{6}}kWh$

D) $2\times {{10}^{8}}kWh$

• question_answer21) The pressure maintained in Coolidge tube is:

A) ${{10}^{-3}}\,mm$ mm of Hg

B) ${{10}^{-7}}\,mm$ of Hg

C) 10 mm of Hg

D) ${{10}^{-4}}\,mm$ of Hg

• question_answer22) The resistance of an ideal voltmeter is:

A) very low

B) infinite

C) zero

D) none of these

• question_answer23) The amplitude of a particle executing SHM is made three-fourth keeping its lime period constant. Its total energy will be:

A) $\frac{E}{2}$

B) $\frac{3}{4}E$

C) $\frac{9}{16}E$

D) none of these

• question_answer24) In the series LCR circuit, the voltmeter and ammeter readings are:

A) 2 V, 100 A

B) 100 V, 2A

C) 100 V, 100 A

D) none of these

• question_answer25) The average power loss in a resistor in A.C. circuit is:

A) zero

B) ${{P}_{rms}}$${{I}_{rms}}$

C) infinite

D) none of these

• question_answer26) If in an R-L circuit, ${{X}_{L}}=100\Omega$ and $R=100\,\Omega ,$ then in this circuit:

A) current leads the potential difference in phase by $90{}^\circ$

B) current lags behind the potential difference in phase by $45{}^\circ$

C) current leads the potential difference in phase by $45{}^\circ$

D) current and potential difference are in same phase

• question_answer27) In a p-type semiconductor, there are mainly:

A) free electrons

B) holes

C) both (a) and (b)

D) none of these

• question_answer28) On increasing the temperature of semiconductor, its resistance :

A) decreases

B) increases

C) depends on pressure

D) does not depend on temperature

• question_answer29) In a triode valve, grid is used to control the plate current, because:

A) grid has negative voltage

B) grid has no voltage

C) grid is nearer to cathode than plate

D) none of these

• question_answer30) When an electron in an hydrogen atom makes a transition from first Bohr orbit to second Bohr orbit, how much energy it absorbs?

A) 3.4 eV

B) 10.2 eV

C) 13.6 eV

D) 1.51 eV

• question_answer31) If in a diode valve, the plate potential becomes double, then plate current will be:

A) $2\sqrt{2}$ times

B) 8 times

C) $3\sqrt{3}$ times

D) 2 times

• question_answer32) If temperature becomes double, the emitted radiation will be :

A) 16 times

B) 8 times

C) $2\sqrt{2}$ times

D) 32 times

• question_answer33) The kinetic energy of one mole gas at 300 K temperature, is E. At 400 K temperature kinetic energy is $E.$ The value of $E/E$ is:

A) 1.33

B) $\sqrt{\left( \frac{4}{3} \right)}$

C) $\frac{16}{9}$

D) 2

• question_answer34) The moment of inertia in rotational motion will be equivalent to ....... as in linear motion:

A) mass

B) velocity

C) momentum

D) force

• question_answer35) If temperature becomes triple, the root mean square velocity of gas molecules will be:

A) $\upsilon /2$

B) $\upsilon \sqrt{3}$

C) $\sqrt{3}\upsilon$

D) same $[\upsilon$ is the root mean square velocity of gas molecules at temperature T]

• question_answer36) If a sphere rolling on an inclined plane with velocity v without slipping, the vertical height of the incline in terms of velocity will be:

A) $\frac{7\upsilon }{10g}$

B) $\frac{7{{\upsilon }^{2}}}{10g}$

C) $\frac{2{{\upsilon }^{2}}}{5g}$

D) $\frac{2\upsilon }{5g}$

• question_answer37) Two substances have different atomic masses and same atomic number. They are:

A) isotopes

B) isobars

C) isotones

D) none of these

• question_answer38) The value of susceptibility of a diamagnetic substance is:

A) small positive

B) small negative

C) positive

D) negligible

• question_answer39) In isothermal process, the work done in expansion of gas from volume ${{V}_{1}}$ to ${{V}_{2}}$ will be:

A) $nRT\,\ln \left( \frac{{{V}_{2}}}{{{V}_{1}}} \right)$

B) $nRT\,\left( \ln \frac{{{V}_{1}}}{{{V}_{2}}} \right)$

C) $nRT$

D) none of these

• question_answer40) A proton moving with velocity$\upsilon$and an $\text{-}$particle experience the same force in a magnetic field. The velocity of the $\alpha$-particle is:

A) $\frac{\upsilon }{8}$

B) $4\upsilon$

C) $\upsilon$

D) $\frac{\upsilon }{2}$

• question_answer41) A spaceship of weight 39200 kg-W lands on planet mars whose radius is $3.4\times {{10}^{6}}m$ and mass is $6.42\,\times {{10}^{23}}kg$. The weight of space ship on mars will be (surface tension of water $=7\times {{10}^{-2}}N/m$):

A) 5000 kg-W

B) 10000 kg-W

C) 15000 kg-W

D) 20000 kg-W

• question_answer42) The diameter of one drop of water is 0.2 cm. The work done in breaking one drop into 100 droplets will be:

A) $7.9\times {{10}^{-6}}J$

B) $5.92\times {{10}^{-6}}J$

C) $2.92\times {{10}^{-6}}J$

D) $1.92\times {{10}^{-6}}J$

• question_answer43) A geostationary satellite is rotating in circular orbit of radius 36000 km around the earth. A spy satellite which is rotating in circular orbit at a height of some hundred kilometre from earths surface, has time period approximately equal to (Re = 6400 km):

A) 1 hour

B) 2 hour

C) 24 hour

D) 36 hour

• question_answer44) The degrees of freedom of a stationary rigid body about its axis will be:

A) one

B) two

C) three

D) four

• question_answer45) The velocity of simple pendulum is maximum at:

A) extremes

B) half displacement

C) mean position

D) every where

• question_answer46) The separation between the two charges $+q$and$-q$ becomes double. The value of force will be:

A) two fold

B) half

C) four fold

D) one fourth

• question_answer47) A body is executing SHM. Which of the following properties remains same at each point of its path during motion?

A) Acceleration

B) Velocity

C) Phase

D) Total energy

• question_answer48) If two coils have self inductance ${{L}_{1}}$ and${{L}_{2}}$ the coefficient of mutual induction will be:

A) $M\propto \sqrt{{{L}_{1}}{{L}_{2}}}$

B) $M\propto \sqrt{\left( \frac{{{L}_{1}}}{{{L}_{2}}} \right)}$

C) $M\propto \sqrt{\left( \frac{{{L}_{2}}}{{{L}_{1}}} \right)}$

D) none of these

• question_answer49) When a glass rod is rubbed with silk, the amount of positive charge acquired by glass rod in magnitude is:

A) less than the charge on silk

B) greater than the charge on silk

C) equal to me charge on silk

D) none of these

• question_answer50) Two sound sources ${{S}_{1}}$ and${{S}_{2}}$of frequencies 324 Hz and 320 Hz are placed at certain separation. An observer is moving away from${{S}_{1}}$ and towards ${{S}_{2}}$ on line joining them. If he hears no beats then speed of observer is ($\upsilon$= 344m/sec):

A) 20 m/s

B) 10 m/s

C) 5 m/s

D) 2.1 m/s

• question_answer51) Which of the following statements is not true about reactance of capacitor?

A) It is positive

B) It is proportional to capacitance

C) It is inversely proportional to capacitance

D) none of these

• question_answer52) The current in pure inductor in an A.C. circuit:

A) leads the potential difference in phase by $90{}^\circ$

B) lags behind the potential difference in phase by $90{}^\circ$

C) leads the potential difference in phase by $45{}^\circ$

D) lags behind the potential difference in phase by $45{}^\circ$

• question_answer53) The hot wire ammeter measures:

A) D.C. current

B) A.C. current

C) none of above

D) both (a) and (b)

• question_answer54) In a step-up transformer ratio of number of turns in primary to seconday coil is 1 : 25. If input voltage is 230 volt and load current is 2 amp, then current in primary is :

A) 50 A

B) 25 A

C) 12.5 A

D) 6.25 A

• question_answer55) Thermal speed of free electrons is of the order of :

A) ${{10}^{-5\,}}\,m/s$

B) ${{10}^{2}}\,m/s$

C) ${{10}^{8}}\,m/s$

D) ${{10}^{5}}\,m/s$

• question_answer56) At the time of total solar eclipse, the spectrum of solar radiation will have :

A) All Fraunhofer lines changed into bright coloured lines

B) no lines at all

C) a smaller number of dark Fraunhofer lines

D) a large number of dark Fraunhofer lines

• question_answer57) The displacement equation of a particle is $x=3\,\sin \,2t+4\,\cos \,2t,$ where $x$ is in metre and t in second. The amplitude and maximum velocity will be respectively:

A) 5m, 10 m/s

B) 3m, 2 m/s

C) 4m, 2 m/s

D) 3m, 4 m/s

• question_answer58) The radius of first Bohr orbit is $0.5\,\overset{\text{o}}{\mathop{\text{A}}}\,,$ then radius of fourth Bohr orbit will be:

A) $0.03\,\overset{\text{o}}{\mathop{\text{A}}}\,$

B) $0.12\,\overset{\text{o}}{\mathop{\text{A}}}\,$

C) $2.0\,\overset{\text{o}}{\mathop{\text{A}}}\,$

D) $8.0\,\overset{\text{o}}{\mathop{\text{A}}}\,$

• question_answer59) In order that a thin film of oil floating on die surface of water shows colours due to interference, the thickness of the oil film should be of the order of:

A) $10000\,\overset{\text{o}}{\mathop{\text{A}}}\,$

B) $50000\,\overset{\text{o}}{\mathop{\text{A}}}\,$

C) $10\,\overset{\text{o}}{\mathop{\text{A}}}\,$

D) $1\, \ cm$

• question_answer60) The temperature of an ideal gas at atmospheric pressure is 300K and volume1m3.If temperature and volume become double, then pressure will be:

A) ${{10}^{5}}N/{{m}^{2}}$

B) $2\times {{10}^{5}}N/{{m}^{2}}$

C) $0.5\times {{10}^{5}}N/{{m}^{2}}$

D) $4\times {{10}^{5}}N/{{m}^{2}}$

• question_answer61) The system of three charges is shown in figure. If charge B is displaced slightly towards A, then:

A) it will displace more towards A

B) it will displace towards C

C) its path will be parabolic

D) its motion will be SHM

• question_answer62) It will displace more towards A it will displace towards C its path will be parabolic its motion will be SHM The lengths of two closed organ pipes are 0.750 m and 0.770 m. If they are sounded together, 3 beats per second are produced. The velocity of sound will be:

A) 330.5 m/sec

B) 340.5 m/sec

C) 346.5 m/sec

D) None of these

• question_answer63) A traveller is running towards a stationary train. If the train sounds a horn of frequency n, the apparent frequency heard by the traveller will be:

A) $n=n\left( \frac{\upsilon +{{\upsilon }_{0}}}{\upsilon } \right)$

B) $n=n\left( \frac{\upsilon -{{\upsilon }_{0}}}{\upsilon +{{\upsilon }_{s}}} \right)$

C) $n=n\left( \frac{\upsilon +{{\upsilon }_{0}}}{\upsilon } \right)$

D) none of these

• question_answer64) The susceptibility of ferromagnetic and paramagnetic substances are respectively:

A) positive, positive

B) positive, negative

C) negative, positive

D) negative, negative

• question_answer65) On increasing the temperature of a gas contained in a closed vessel by $1{}^\circ C$, the pressure increases by 0.4%. The initial temperature of gas is:

A) 25 K

B) 250 K

C) $2500{}^\circ C$

D) $250{}^\circ C$

• question_answer66) The graphs given below depict the dependence of two reactive impedances${{X}_{1}}$and${{X}_{2}}$ on the frequency of the alternating emf applied individually to them. We can then say that:

A) ${{X}_{1}}$ is an inductor and ${{X}_{2}}$ is a capacitor

B) ${{X}_{1}}$ is a resistor and ${{X}_{2}}$ is a capacitor

C) ${{X}_{1}}$ is a capacitor and ${{X}_{2}}$ is an inductor

D) ${{X}_{1}}$ is an inductor and ${{X}_{2}}$ is a resistor

• question_answer67) A mass m is moving with constant velocity along a line parallel to $x-$axis beyond origin. Its angular momentum about die origin:

A) remains constant

B) is zero

C) increases

D) decreases

• question_answer68) A particle executes SUM with frequency The frequency of its kinetic energy is:

A) $f$

B) $2f$

C) $f/2$

D) $4f$

• question_answer69) Three spheres have radii 7.5 cm, 8.5 cm and 9.5 cm respectively. Which sphere exerts maximum pressure on earth?

A) First

B) Second

C) Third

D) All same

• question_answer70) In an ideal transformer:

A) ${{P}_{output}}<{{P}_{input}}$

B) ${{P}_{output}}>{{P}_{input}}$

C) ${{P}_{output}}><{{P}_{input}}$

D) ${{P}_{output}}={{P}_{input}}$

• question_answer71) What will be the angular width of central maximum in Fraunhofer diffraction when light of wavelength $6000\overset{\text{o}}{\mathop{\text{A}}}\,$ is used and slit width is $12\times {{10}^{-5}}cm$?

• question_answer72) A spring executes SHM with mass of 10 kg attached to it. The force constant of spring is 10Nm. If at any instant its velocity is 40 cm/sec, the displacement will be (where amplitude is 0.5m):

A) 0.09 m

B) 0.3 m

C) 0.03 m

D) 0.9 m

• question_answer73) A train moving with 20 m/s towards a stationary observer produces frequency of 440 Hz. The apparent frequency heard will be ($\upsilon$ = 330 m/s):

A) 448 Hz

B) 455 Hz

C) 440 Hz

D) 468 Hz

• question_answer74) A thin prism P of angle $4{}^\circ$ made of glass of refractive index 1.54 is combined to a thin prism Q made of glass of refractive index 1.72 to produce dispersion without deviation. The angle of prism Q is:

A) $4{}^\circ$

B) $3{}^\circ$

C) $2.6{}^\circ$

D) $5.3{}^\circ$

• question_answer75) The de-Broglie wavelength$\lambda$:

A) is proportional to mass

B) is proportional to impulse

C) inversely proportional to impulse

D) does not depend on impulse

• question_answer76) In an LCR (parallel) A.C. circuit, the impedance in state of resonance is:

A) equal to resistance

B) zero

C) infinite

D) depending on L and C

• question_answer77) The average power lost in pure capacitor in an A.C. circuit:

A) is zero

B) depends on V

C) depends on C

D) depends on insulator placed in parallel plate capacitor

• question_answer78) 78. The plate resistance of triode valve is $30k\Omega$ and trans conductance is 2x10-3 mho. The amplification factor is:

A) 60

B) 50

C) 1.5

D) 0.67

• question_answer79) For making p-n junction diode forward biased:

A) same potential is applied

B) greater potential is given to n compared to p

C) greater potential is given to p compared to n

D) unbalanced concentration

• question_answer80) The half life of radioactive substance is 4 days. Its 100 g is kept for 16 days. After this period, the amount of substance remained is:

A) 25g

B) 15 g

C) 10 g

D) 6.25g

• question_answer81) Hysteresis property is shown by:

A) ferromagnetic substances

B) paramagnetic substances

C) both above

D) none of these

• question_answer82) A nucleus of mass number 232 and atomic number 90 after many disintegrations of $\alpha$ and  radiations, decays into other nucleus whose mass number is 220 and atomic number is 86. The numbers of $\alpha$ and $\beta$ radiations will be:

A) 4, 0

B) 3, 6

C) 3, 2

D) 2, 1

• question_answer83) If at temperature ${{T}_{1}}=1000K,$ the wavelength is $1.4\times {{10}^{-6}}m,$ then at what temperature the wavelength will be $2.8\times {{10}^{-6}}m$?

A) 2000 K

B) 500 K

C) 250 K

D) None of these

• question_answer84) The minimum wavelength of photon is $5000\overset{\text{o}}{\mathop{\text{A}}}\,$its energy will be:

A) 2.5 eV

B) 50 V

C) 5.48 eV

D) 7.48 eV

• question_answer85) The potential of dipole at its axial position is proportional to distance r as:

A) ${{r}^{-2}}$

B) ${{r}^{-1}}$

C) r

D) ${{r}^{o}}$

• question_answer86) The $\beta$-particles are emitted by:

A) atom

B) orbit

C) nucleus

D) none of these

• question_answer87) If in a Youngs double slit experiment, the slit width is 3 cm, the separation between slits and screen is 7 cm and wavelength of light is $1000\overset{\text{o}}{\mathop{\text{A}}}\,,$then fringe width will be ($\alpha =1{}^\circ$,$\mu$ = 1.5):

A) $2\times {{10}^{-5\,}}\,m$

B) $2\times {{10}^{-3\,}}\,m$

C) $0.2\times {{10}^{-5\,}}\,m$

D) none of these

• question_answer88) The direction of Lorentz force can be found by:

A) Flemings right hand rule

B) Flemings left hand rule

C) Maxwells screw law

D) none of these

• question_answer89) The dielectric constant K of an insulator can be:

A) 5

B) 0.5

C) -1

D) zero

• question_answer90) Four equal charges q are placed at centre of a conducting hollow sphere. If they are displaced 1.5 cm from centre, the change in flux will be:

A) doubled

B) tripled

C) same

D) none of these

• question_answer91) How is the time period of simple pendulum vary with its amplitude?

A) $T\propto a$

B) $T\propto {{a}^{2}}$

C) Does not depend on its amplitude

D) None of these

• question_answer92) If length of wire is 2m and the mass is 80 kg, the tension in wire will be if frequency is $\frac{1}{4}$Hz:

A) 400 N

B) 80 N

C) 4 N

D) 4000 N

• question_answer93) The value of heat produced by the water if $\mu =100,$ ${{C}_{p}}=1.5$ and temperature difference is $20{}^\circ C$, is:

A) 3000 J

B) 300 J

C) 7.5 J

D) none of these

• question_answer94) When charge is given to a soap bubble, it shows:

A) an increase in size

B) sometimes an increase and sometimes a decrease in size

C) no change in size

D) none of these

• question_answer95) When temperature of a gas is increased then which of the following statements is always true?

A) Work is done on the gas

B) Heat is supplied to gas

C) Energy of gas is increased

D) Pressure of gas remains unchanged.

• question_answer96) An increase in pressure required to decrease the 200 litres volume of a liquid by 0.004% in pipa is (Bulk modulus of the liquid = 2100 Mpa)

A) 188 kPa

B) 8.4 kPa

C) 18.8 kPa

D) 84 kPa

• question_answer97) The number of bullets are fired in all possible directions with the same initial velocity n. The maximum area of ground covered by bullets is:

A) $\pi {{\left( \frac{2{{\mu }^{2}}}{g} \right)}^{2}}$

B) $2\pi {{\left( \frac{u}{g} \right)}^{2}}$

C) $\pi {{\left( \frac{u}{2g} \right)}^{2}}$

D) $\pi {{\left( \frac{{{u}^{2}}}{g} \right)}^{2}}$

• question_answer98) If on heating liquid through $80{}^\circ C$,the mass expelled is (1/100) the of mass still remaining, the coefficient of apparent expansion of liquid is:

A) $1.25\times {{10}^{-4}}/{}^\circ C$

B) $12.5\times {{10}^{-4}}/{}^\circ C$

C) $152\times {{10}^{-5}}/{}^\circ C$

D) none of these

• question_answer99) If 2g of helium is enclosed in a vessel at NTP, how much heat should be added to it to double the pressure?

A) 1638 J

B) 1019 J

C) 1568 J

D) 836 J

• question_answer100) Angular velocity of minute hand of a clock is:

A) $\frac{\pi }{30\,}\,rad/s$

B) $\pi \,rad/s$

C) $2\pi \,rad/s$

D) $\frac{\pi }{1800}\,rad/s$

• question_answer101) The correct IUPAC name of the following compound is: ${{C}_{2}}{{H}_{5}}.\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,.{{C}_{2}}{{H}_{5}}$

A) 3, 4-dimethyul-3-hyexne

B) 3, 5-dimethyul-3-hyexne

C) 3, 4-dimethyul-2-hyexne

D) None of the above

• question_answer102) Which of the following compound yield$2,5-dimethyl\text{ }hexan-1,\text{ }6-dial$?

A) 3, 6-dimethyl cyclohexene

B) 3, 4-dimethyl cyclohexene

C) 4, 6-dimethyl cyclohexene

D) 3, 5-dimethyl cyclohexene

• question_answer103) Which of these are isomers?

A) Dimethyl ether and ethanol

B) Acetic acid and acetone

C) Acetic acid and acetaldehyde

D) None of the above

• question_answer104) Compound X $({{C}_{3}}{{H}_{8}}O)$ on oxidation gives compound Y $({{C}_{3}}{{H}_{6}}O)$. What is compound X?

A) ${{1}^{o}}\text{ }alcohol$

B) ${{2}^{o}}\,alcohol$

C) ${{3}^{o}}\text{ }alcohol~$

D) none of these

• question_answer105) Which of the following easily accept proton?

A) ${{F}^{-}}$

B) $B{{r}^{-}}$

C) $O{{H}^{-}}$

D) $N{{H}_{2}}^{-}$

• question_answer106) The bond angle in $R-OR$is:

A) ${{110}^{o}}$

B) ${{109}^{o}}$

C) $108{}^\circ$

D) none of these

• question_answer107) $C-O$ bond in ether can be broken by:

A) $HI$

B) $HCl$

C) $HBr$

D) $HF$

• question_answer108) Strongest $C-H$ bond is present in:

A) ethane

B) ethane

C) ethyne

D) $C{{H}_{3}}OH$

• question_answer109) In which of the following reactions, ethyl chloride is obtained in good yield?

A) $Ethane+C{{l}_{2}}\xrightarrow{h\omega }$

B) $Ethane+C{{l}_{2}}(excess)\xrightarrow{h\omega }$

C) $Ethane+C{{l}_{2}}\xrightarrow{in\,dark}$

D) $Benzene+C{{l}_{2}}\xrightarrow{{}}$

• question_answer110) Which of the following yield 2 mole of formaldehyde on ozonolysis?

A) $CH\equiv CH$

B) $C{{H}_{2}}=C{{H}_{2}}$

C) $C{{H}_{3}}-CH=C{{H}_{2}}$

D) ${{C}_{6}}{{H}_{6}}$

• question_answer111) Acetylene on treating with $C{{u}_{2}}C{{l}_{2}}$gives:

A) $C{{u}_{2}}{{C}_{2}}$

B) $CuCHCl$

C) $~C{{H}_{4}}$

D) none of these

• question_answer112) What will be obtained when acetylene is treated with arsenic chloride?

A) Lewisite

B) Mustard gas

C) Westron

D) None of these

• question_answer113) Phenol on treatment with formaldehyde in dilute alkaline solution, gives:

A) bakelite

B) terylene

C) nylon

D) none of these

A) $2,4-DNP$

B) $cone.\text{ }HCl+ZnC{{l}_{2}}$

C) $DMSO$

D) none of these

• question_answer115) Hinsbergs reagent is used to distinguish between:

A) ${{1}^{o}}$ and ${{2}^{o}}$ amines

B) ${{2}^{o}}$ and ${{3}^{o}}$ amines

C) (a) & (b)

D) none of these

• question_answer116) The reaction of ${{H}_{2}}$ on ethene in presence of catalyst is called :

A) Sabatier Sanderens reaction

B) Darzen reaction

C) Rosenmund reduction

D) none of the above

• question_answer117) Propene on addition with $HI,$ gives:

A) $C{{H}_{3}}-CHI-C{{H}_{3}}$

B) $C{{H}_{3}}-C{{H}_{2}}-C{{H}_{3}}I$

C) $C{{H}_{3}}-CHI-C{{H}_{2}}I$

D) none of the above

• question_answer118) Which of the following reacts with both acetaldehyde and acetone?

A) F.S

B) $C{{H}_{3}}MgBr$

C) T.R

D) Benedict solution

• question_answer119) Schiffs solution B is obtained when:

A) sulphurous acid is passed through magenta dye

B) chlorine is passed through magenta dye

C) both (a) & (b)

D) none of the above

A) $FeS{{O}_{4}}+{{H}_{2}}{{O}_{2}}$

B) $HgS{{O}_{4}}+{{H}_{2}}{{O}_{2}}$

C) $FeS{{O}_{4}}+{{H}_{2}}O$

D) None of the above

• question_answer121) Compound used in Rosenmunds reduction is:

A) $RCOCl$

B) $RCON{{H}_{2}}$

C) $RCOOR$

D) none of these

• question_answer122) Which of the following shows chloroform reaction?

A) $C{{H}_{3}}CHOHC{{H}_{3}}$

B) Methanol

C) n-butanol

D) None of the above

• question_answer123) Which on reduction does not give primary amines?

A) ${{C}_{2}}{{H}_{3}}NC$

B) $C{{H}_{3}}CN$

C) $C{{H}_{3}}CON{{H}_{2}}$

D) All of these

• question_answer124) Primary amine $+\text{ }aldehyde\xrightarrow{{}}X,$X is:

A) amino

B) imino

C) nitro

D) nitrito

• question_answer125) The reactivity order of acid derivatives is:

A) $RCOCl>RCOOCOR>RCON{{H}_{2}}$

B) $RCOCl<RCOOCOR<RCON{{H}_{2}}$

C) $RCOCl>RCOOCOR<RCON{{H}_{2}}$

D) none of the above

• question_answer126) $Aniline+NaN{{O}_{2}}\text{+ }HCl\xrightarrow{{}}X,$X is:

A) diazo salt

B) dye

C) polymer

D) none of these

• question_answer127) Which of the following reacts fastly with $Na$?

A) ${{1}^{o}}\text{ }alcohol$

B) ${{2}^{o}}\text{ }alcohol$

C) ${{3}^{o}}\text{ }alcohol$

D) The reactivity of all is equal

• question_answer128) Which of the following is the strongest base?

A) ${{({{C}_{2}}{{H}_{5}})}_{2}}NH$

B) ${{(C{{H}_{3}})}_{3}}N$

C) ${{(C{{H}_{3}})}_{2}}NH$

D) $C{{H}_{3}}N{{H}_{2}}$

• question_answer129) $Phenol+CC{{l}_{4}}+KOH\xrightarrow{{}}\text{ }X,$X is:

A) salicyclic acid

B) salicaldehyde

C) benzoic acid

D) none of the above

• question_answer130) Toluene $\xrightarrow{Cr{{O}_{2}}C{{l}_{2}}}A\xrightarrow{anhydride}B,$B is:

A) cinnamic acid

B) cinnamaldehyde

C) salicyclic acid

D) none of the above

• question_answer131) ${{C}_{6}}{{H}_{6}}+C{{H}_{3}}COC1\xrightarrow{AlC{{l}_{3}}}P,$the product P is:

A) acetophenone

B) benzophenone

C) toluene

D) all the above

• question_answer132) $C{{H}_{3}}C{{H}_{2}}COOH\xrightarrow{SOC{{l}_{2}}}A$ $\xrightarrow{LiAl{{H}_{4}}\,(ter.\,but.\,oxide)}B\xrightarrow{\underset{C{{H}_{2}}OH}{\overset{C{{H}_{2}}OH}{\mathop{|}}}\,}C.$ C is:

A)

B) $C{{H}_{3}}C{{H}_{2}}COCl$

C) $C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}N{{H}_{2}}$

D) None of the above

A) $Conc.HCl+ZnC{{l}_{2}}$

B) $N{{H}_{2}}\text{ }N{{H}_{2}}/{{C}_{2}}{{H}_{5}}ONa$

C) $Zn-Hg/HCl$

D) None of the above

• question_answer134) Which of the following can distinguish between carbonyl compounds and carboxylic acids?

A) $NaHC{{O}_{3}}$

B) $NaHS{{O}_{4}}$

C) $Cone.\text{ }HCl$

D) None of these

• question_answer135) The last traces of water from alcohol can be removed by:

A) passing dry $HCl$

B) ether

C) $Mg$

D) none of the above

• question_answer136) Aniline and benzene can be distinguished by:

A) $HCl$

B) $NaOH$

C) ${{H}_{2}}O$

D) none of the above

• question_answer137) Ethyl alcohol cannot be purified more than 95% by distillation, because:

A) it forms H-bonds with water

B) it is lighter than water

C) it forms azeotropic solution

D) all the above are correct

• question_answer138) Which of the following shows cis-trans isomerism?

A) $2-butyne$

B) $1-butyne$

C) $2-butene$

D) $1-butene$

• question_answer139) Why ethyl iodide becomes coloured when it is exposed to air?

A) Iodine flows out

B) Iodine is liberated

C) lodoform is formed

D) None of the above

• question_answer140) The compound, which decolorize bromine water but does not react with Tollens reagent is:

A) ethene

B) ethyne

C) propane

D) ethane

• question_answer141) The compound which reacts with hydroxyl amine but does not react with Tollens reagent is:

A) $C{{H}_{3}}CHO$

B) $HCHO$

C) ${{C}_{2}}{{H}_{5}}OH$

D) $C{{H}_{3}}COC{{H}_{3}}$

A) $C{{H}_{4}}$

B) ${{C}_{2}}{{H}_{6}}$

C) ${{C}_{3}}{{H}_{8}}$

D) none of these

A) $C{{H}_{4}}$

B) $CO+{{H}_{2}}+C{{H}_{4}}$

C) $C{{H}_{4}}+{{C}_{2}}{{H}_{6}}+{{C}_{3}}{{H}_{8}}$

D) all the above

• question_answer144) $CHC{{l}_{3}}$is tested prior to its use as anaesthetic, by:

A) $AgN{{O}_{3}}+HCl$

B) $HCl$

C) $AgN{{O}_{3}}$

D) none of these

• question_answer145) Which is used to get ethyl alcohol from acetic acid?

A) Acetobacter acetii

B) Zymase

C) Maltase

D) None of the above

• question_answer146) Which of the following does not give carbylamine test?

A) $\phi -N{{H}_{2}}$

B) $C{{H}_{3}}N{{H}_{2}}$

C) ${{(C{{H}_{3}})}_{2}}NH$

D) all die above give this test

A) trichloro ethylene

B) tetrachloro ethane

C) tetrachloro ethylene

D) none of the above

• question_answer148) Possible isomers of ${{C}_{3}}{{H}_{7}}Cl$ are:

A) $2$

B) $5$

C) $3$

D) $6$

• question_answer149) $CH\equiv CH+HgS{{O}_{4}}\xrightarrow{{{H}_{2}}O}A,$ A is:

A) $C{{H}_{2}}=C{{H}_{2}}~$

B) ${{C}_{2}}{{H}_{5}}OH$

C) $HCHO$

D) acetaldehyde

A) successful in calculating energy of helium like atoms

B) successful in calculating energy of hydrogen like atoms

C) successful in calculating energy of lithium like atoms

D) none of the above

• question_answer151) The energy of zero point in terms of principal quantum numbers is:

A) $0$

B) $1$

C) $2$

D) $3$

• question_answer152) Which of the following statements is not true?

A) The most appropriate level for electron in zero level is nucleus

B) The wave function of electron in an atom is related to its spinning speed

C) The electron does not have magnetic moment while spinning

D) None of the above

• question_answer153) Electronegativity is maximum of:

A) $N$

B) $Cl$

C) $C$

D) $0$

• question_answer154) Which of the following has maximum charge density?

A) $S{{c}^{2-}}$

B) ${{S}^{2-}}$

C) ${{O}^{2-}}$

D) $T{{e}^{2-}}$

A) ${{C}_{2}}{{H}_{4}}$

B) $C{{H}_{4}}$

C) $CO$

D) $GaC{{l}_{3}}$

• question_answer156) pH of $N/100\text{ }$ $HCl$will be:

A) $1$

B) $4$

C) $0.2$

D) $2$

• question_answer157) In a buffer, if the ratio of salt and acid is increased 10 times, then pH will:

A) increase by 10

B) decrease by 10

C) increase by one

D) decrease by one

• question_answer158) The solution of $N{{a}_{2}}C{{O}_{3}}$ will be:

A) weakly basic

B) strongly basic

C) weakly acidic

D) strongly acidic

• question_answer159) The correct statement for isotonic solution is:

A) both have equal pH on taking equal moles

B) both have equal $pKa$on taking equal moles

C) both have equal molar solubility

D) all the above

• question_answer160) ${{N}_{2}}+{{O}_{2}}2NO.$. For this reaction ${{K}_{a}}=100,$ then ${{K}_{a}}$ for reaction, $2NO{{N}_{2}}+{{O}_{2}}$will be:

A) $0.01$

B) $0.1$

C) $10$

D) $100$

• question_answer161) Which reaction will proceed in forward direction on increasing pressure?

A) $C(s)+{{O}_{2}}\xrightarrow{{}}C{{O}_{2}}$

B) $S{{O}_{2}}(s)+0.5{{O}_{2}}\xrightarrow{{}}S{{O}_{3}}$

C) ${{N}_{2}}+3{{H}_{2}}\xrightarrow{{}}2N{{H}_{3}}$

D) None of the above

• question_answer162) The nature of the solution of potash alum is:

A) acidic

B) basic

C) neutral

D) amphoteric

• question_answer163) Lattice energy is calculated by :

A) Born-Haber cycle

B) Mullikens equation

C) both (a) and (b)

D) none of the above

A) $Tc$

B) $Y$

C) $Sr$

D) $Pt$

• question_answer165) In which of the following methods, $Mg$ is used to reduce titanium chloride?

A) IMI process

B) Haber process

C) Krolls method

D) None of the above

• question_answer166) In which of the following, there are 3 bp and 2 Ip?

A) $N{{H}_{3}}$

B) $P{{H}_{3}}$

C) $Cl{{F}_{3}}$

D) $AlC{{l}_{3}}$

• question_answer167) Which is the coordinating solvent in the following reaction? $B{{F}_{3}}+HF+{{H}_{2}}O\xrightarrow{{}}{{H}_{3}}{{O}^{+}}+BF_{4}^{-}$

A) $HF$

B) ${{H}_{2}}O$

C) $N{{H}_{3}}$

D) $B{{F}_{3}}$

• question_answer168) Which change is involved in the extraction of metal from metal oxide?

A) Free energy change and pressure

B) Free energy change and temperature

C) Free energy change and concentration

D) Free energy change and volume

• question_answer169) Maximum paramagnetism is in:

A) $C{{r}^{3+}}$

B) $M{{n}^{2+}}$

C) $M{{n}^{3+}}$

D) $N{{i}^{2+}}$

• question_answer170) Which of the following is wrong electronic configuration?

A) $Sc=3{{d}^{1}}{{s}^{2}}$

B) $Ti=3{{d}^{2}}{{s}^{2}}$

C) $Cr=3{{d}^{5}}{{s}^{1}}$

D) $V=3{{s}^{2}}{{d}^{2}}$

• question_answer171) Which of the following give red-violet colour in flame-test?

A) $Li$

B) $Na$

C) $Cs$

D) $Rb$

• question_answer172) The reason for the light yellow colour of $AgBr$is:

A) $AgBr$ is more covalent due to more polarizing power of $A{{g}^{+}}$

B) $AgBr$is less covalent

C) both (a) and (b)

D) none of the above

• question_answer173) Which of the following reaction is balanced?

A) $AsO_{4}^{2-}+MnO_{4}^{-}\xrightarrow{{}}AsO_{4}^{3-}+Mn{{O}_{2}}+2{{H}_{2}}O$

B) $MnO_{4}^{-}+{{C}_{2}}O_{4}^{2-}\xrightarrow{{}}M{{n}^{2+}}+C{{O}_{2}}$

C) $Cu+4HN{{O}_{3}}\xrightarrow{{}}Cu{{(N{{O}_{3}})}_{2}}+2N{{O}_{2}}+2{{H}_{2}}O$

D) ${{H}_{2}}S+HN{{O}_{3}}\to {{H}_{2}}O+NO+S$

• question_answer174) Which of the following oxide is acidic?

A) ${{B}_{2}}{{O}_{3}}$

B) $Be{{O}_{2}}$

C) $A{{l}_{2}}{{O}_{3}}$

D) None of these

• question_answer175) In the electrolysis of alumina, cryolite and $Ca{{F}_{2}}$are added to:

A) increase the emf of cell

B) decrease the emf of cell

C) decrease the melting point

D) both (b) and (c)

• question_answer176) Maximum unpaired electrons are in:

A) $C{{r}^{2+}}$

B) $M{{n}^{3+}}$

C) $M{{n}^{2+}}$

D) $C{{o}^{2+}}$

• question_answer177) The ionization energy will be maximum for:

A) $H$

B) $Li$

C) $Be$

D) $B$

• question_answer178) Which oxidation state is the most common among lanthanides?

A) $+2$

B) $+3$

C) $+1$

D) $+4$

• question_answer179) The correct quantum numbers of 3p-electrons, are:

A) $n=3,l=2,m=+2,s=+\frac{1}{2}$

B) $n=3,l=1,m=-1,s=-\frac{1}{2}$

C) $n=3,l=-2,m=-2,s=+\frac{1}{2}$

D) None of the above

• question_answer180) The equilibrium constant ${{K}_{C}}$ is affected by:

A) temperature

B) pressure

C) initial concentration of reactants

D) catalyst

• question_answer181) Which of the following reaction is an acid-base reaction?

A) $Ca{{C}_{2}}{{O}_{4}}+{{H}^{+}}\to C{{a}^{2+}}+H{{C}_{2}}O_{4}^{-}$

B) $Al+{{H}_{2}}O+O{{H}^{-}}\to Al{{O}_{2}}+\frac{3}{4}{{H}_{2}}$

C) $HgS+NO_{3}^{-}+{{H}^{+}}\to H{{g}^{2+}}+{{H}_{2}}O+....$

D) All of the above

• question_answer182) Which of the following reaction is disproportionation?

A) $2{{H}_{2}}S+S{{O}_{2}}\to 2{{H}_{2}}O+3S$

B) $Ca+{{H}_{2}}\to Ca{{H}_{2}}$

C) $4P+3NaOH+3{{H}_{2}}O\to P{{H}_{3}}$$+3Na{{H}_{2}}P{{O}_{2}}$

D) All of the above

• question_answer183) How many $\sigma$ and $\pi$-bonds are in $SO_{4}^{2-}$?

A) $4,2$

B) $3,2$

C) $4,3$

D) None of these

• question_answer184) Which of the following is square planar?

A) $Cl{{F}_{3}}$

B) $S{{O}_{3}}$

C) ${{[Pt{{(Cl)}_{4}}]}^{2-}}$

D) $HgC{{l}_{2}}$

• question_answer185) The wrong match is:

A) $P{{F}_{3}}-$trigonal bipyramidal

B) $S{{O}_{2}}-$angular

C) $Cl{{F}_{3}}-$tetrahedral

D) none of the above

• question_answer186) In a basic buffer $0.0025\text{ }mole$of $N{{H}_{4}}Cl$ and $0.15\text{ }mole$of $N{{H}_{4}}OH$are present. The pH of the solution will be: ${{(}_{P}}{{K}_{b}}=4.74)$

A) $11.04$

B) $10.24$

C) $6.62$

D) $5.48$

• question_answer187) Whose electron affinity will be less than zero?

A) ${{O}^{2-}}$

B) ${{S}^{2-}}$

C) both (a) and (b)

D) ${{O}^{+}}$

• question_answer188) Which of the following transition is correct for Balmer series?

A) $3\xrightarrow{{}}1$

B) $1\xrightarrow{{}}2$

C) $4\xrightarrow{{}}2$

D) $2\xrightarrow{{}}4$

• question_answer189) ${{K}_{C}}=9$ for the reaction,$A+BC+D$. If A and B are taken in equal amounts, then amount of C in equilibrium is:

A) $1$

B) $0.25$

C) $0.75$

D) none of these

• question_answer190) Nylon is not a:

A) condensation polymer

B) poly amide

C) copolymer

D) homopolymer

• question_answer191) When amonia is heated with dry alkali metal in presence of $Fe,$ the product obtained is:

A) $Fe,$ complex, ${{H}_{2}}$

B) metal amide, ${{H}_{2}}$

C) alkaline complex, ${{H}_{2}}$

D) alkaline complex

• question_answer192) $Mn{{O}_{2}}\xrightarrow{{}}M{{n}^{3+}}$ The oxidation state of $Mn$ changes from:

A) $+4\xrightarrow{{}}+3$

B) $+4\xrightarrow{{}}+2$

C) $+2\xrightarrow{{}}+1$

D) $+3\xrightarrow{{}}+1$

• question_answer193) $_{p}{{K}_{a}}$ will be maximum for:

A) $HCl{{O}_{4}}$

B) $HCl{{O}_{3}}$

C) $HCl{{O}_{2}}$

D) $HClO$

• question_answer194) The energy of first shell in hydrogen is $13.6\text{ }eV,$the energy of second shell will be:

A) $3.4eV$

B) $10.2\text{ }eV$

C) $1\,eV$

D) $3.02\text{ }eV$

• question_answer195) The method used to prepare steel is:

A) Bessemers converter method

B) Seimens Martin process

C) Von-Arkel method

D) L.D. process

• question_answer196) The number of $\alpha -$ and $\beta -$particles lost when $_{92}{{U}^{238}}$ changes to $_{82}P{{b}^{206}}$ :

A) $8\alpha ,\,6\beta$

B) $6\alpha ,\,6\beta$

C) $6\alpha ,\,6\beta$

D) $4\alpha ,\,4\beta$

A) $[Pt{{(N{{H}_{3}})}_{2}}C{{l}_{2}}]$

B) $K[PtC{{l}_{3}}\,({{C}_{2}}{{H}_{4}})]$

C) $Fe{{({{C}_{5}}{{H}_{5}})}_{2}}$

D) None of the above

• question_answer198) How many Faradays are required to reduce one mole of $MnO_{4}^{-}$ to $M{{n}^{2+}}$?

A) $1$

B) $2$

C) $3$

D) $5$

• question_answer199) If a process is both endothennic and spontaneous, then:

A) $\Delta S>0$

B) $\Delta S<0$

C) $\Delta G>0$

D) $\Delta E=0$

• question_answer200) Number of chiral carbon atoms in

A) $3$

B) $4$

C) $1$

D) $2$

• question_answer201) Golgi complex works for:

A) excretion

B) respiration

C) secretion

D) reduction

• question_answer202) The number of chromosomes becomes half in:

A) anaphase$\text{-I}$

B) anaphase$\text{-II}$

C) telophase$\text{-I}$

D) telophase$\text{-II}$

• question_answer203) Lipid bilayer is present in:

A) plasma membrane

B) ribosome

C) chromosome

D) nucleolus

• question_answer204) Hydrolases are found in:

A) lysosomes

B) ribosomes

C) mesosomes

D) peroxisomes

A) due to crossing over of some part between homologous chromosomes

B) due to crossing over of some part between non homologous chromosomes

C) due to duplication of homologous and non-homologous chromosomes

D) due to loss of some part of chromosomes

• question_answer206) Acrosome is formed by:

A) mitochondria

B) golgi body

C) ribosomes

D) lysosome

• question_answer207) In protoplasm fat store in the form of :

A) polypeptide

B) triglyceride

C) polysaccharide

D) nucleosides

• question_answer208) Antibody is formed by :

A) protein

B) carbohydrate

C) nucleic acid

D) lipid

• question_answer209) Food store as oil in:

A) Chlamydomonas

B) Oedogonium

C) Vaucheria

D) Chara

A) algae

B) moss

C) ferns

D) distilated wastes

• question_answer211) Lowest number of chromosomes are found in:

A) Haplopappus

B) Cyprus

C) Salix

D) None of these

• question_answer212) Peat moss is :

A) Funeria

B) ferns

C) algae

D) Sphagnum

• question_answer213) Difference between algae and bryophyte is:

A) terrestrial habitat

B) sterile jacket

C) biflagellate gametes

D) none of these

• question_answer214) Which have great importance in genetics?

A) Penicillium

B) Clewceps

C) Neurospora

D) None of these

• question_answer215) The protein toxin producing bacteria, which used to control biological pest is :

A) E. coli

B) Agrobacterium

C) Mycobacterium sp.

D) B. thuringiensis

• question_answer216) Bacteria with single flagella at one end is called :

A) monotrichous

B) lophotrichous

C) amphitrichous

D) peritrichous

• question_answer217) Bacteria causing disease of citrus is:

A) citrus leaf spot

B) stunt disease

C) citrus canker

D) citrus greening leaf disease

• question_answer218) ${{O}_{2}}$ does not evolved in photosynthesis of:

A) BGA

B) green algae

C) bacteria

D) autotrophic plant

• question_answer219) Photosynthetic pigment of bacteria is:

A) chromoplast

B) chloroplast

C) leucoplast

D) chromatophore

A) RNA

B) DNA

C) Either RNA or DNA

D) Neither DNA nor RNA

• question_answer221) Which group is evolutionary modern?

A) Gymnosperms

B) Grasses

C) Pteridophytes

D) Algae

• question_answer222) Absence of which is cause of naked seeds?

A) Integument

B) Nucellus

C) Ovary wall

D) Perianth

• question_answer223) Genes for haemophilia disease is located on:

A) autosomes

B) mitochondria

C) chloroplasts

D) sex chromosomes

• question_answer224) Most stable ecosystem is:

A) desert

B) marine

C) mountain

D) forest

A) desert

B) tropical forest

C) deciduous forest

D) tundra

• question_answer226) Ecological pyramids were discovered by?

A) Eiton

B) Odum

C) Reiter

D) None of these

• question_answer227) Haptonastic movement is found in:

A) Drosera

B) Oxalis

C) Mimosa

D) Cucurbita

• question_answer228) Which one of the following was rediscoverer of Mendels work:

A) Muller

B) Morgan

C) Correns

D) Bridge

• question_answer229) In yeast during anaerobic respiration how many glucose molecules are required for production of 38 ATP?

A) 1

B) 2

C) 19

D) 38

• question_answer230) Krebs cycle is completed by:

A) hydrogenation

B) oxidation

C) nitrification

D) reduction

• question_answer231) Tulip belong to family:

A) Asteraceae

B) Liliaceae

C) Brassicaceae

D) Malvaceae

A) Cruciferae

B) Amaryllidaceae

C) Mimoseae

D) Compositae

• question_answer233) Bicarpellary, syncarpus and with pseudoseptum fruit is:

A) siliqua

B) akene

C) capsule

D) all of these

A) diacetyl morphine

B) triacetyl morphine

C) tetra acetyl morphine

D) mono acetyl morphine

A) more ${{O}_{2}}$ and less $C{{O}_{2}}$

B) less ${{O}_{2}}$ and more $C{{O}_{2}}$

C) more temperature and less ${{O}_{2}}$

D) more humidity and less temperature

• question_answer236) Bicollateral bundles are found in:

A) Cucurbitaceae

B) Malvaceae

C) Cruciferae

D) None of these

• question_answer237) Vascular bundle with cambium is called:

A) closed

B) open

C) exarch

D) endarch

• question_answer238) When phloem is surrounded completely by xylem the vascular bundle is called:

A) amphicribral

B) amphivasal

C) conjoint

D) collateral

• question_answer239) Lignification is associated with:

A) xylem

B) phloem

C) parenchyma

D) chlorenchyma

A) Phellum, Phelloderm, Plerome

B) Phellum, Phellogen, Dermatogen

C) Phellum, Phellogen, Phelloderm

D) Phellum, Phellogen, Cortex

• question_answer241) Which of the following is the result of double fertilization?

A) Cotyledon

B) Nucellus

C) Endosperm

D) None of these

A) megagametophyte

B) megasporophyte

C) megasporophyll

D) endosperm

• question_answer243) Pollen tube entered through micropyle in :

A) porogamy

B) chalazogamy

C) syngamy

D) misogamy

• question_answer244) Which formed in oxidative phosphorylation?

A) ATP in photosynthesis

B) ATP in respiration

C) $NADP{{H}_{2}}$ in photosynthesis

D) $NADP{{H}_{2}}$ in respiration

• question_answer245) Which of the following is the region of cell division?

A) Root cap

B) meristematic region

C) Root hair zone

D) None of these

• question_answer246) Natural auxin is :

A) NAA

B) $\text{IAA}$

C) 2, 4-D

D) Aviton

• question_answer247) How many letters used in genetic code?

A) 1

B) 2

C) 3

D) 4

• question_answer248) Correct name is :

A) Brassica indica

B) Mengifera Indica

C) SOLANUM MELONGINA

D) Mimosa Pudica

• question_answer249) Two stamens as exception in Cruciferae are found in:

A) Nastrnsium

B) Senebiera

C) Raphanus

D) Brassica

• question_answer250) Difference between prokaryote and eukaryote is :

A) in cell size

B) in cell shape

C) in chemical composition of protoplasm

D) in organization of nuclear material

• question_answer251) Stomata are also called as:

A) stomates

B) lenticels

C) hydathods

D) bark

• question_answer252) In soil water available for plants is:

A) capillary water

B) chemically bound water

C) gravitational water

D) hygroscopic water

• question_answer253) Who discovered the super bugs?

A) H.G. Khorana

B) Dilip Sah

C) Anand Mohan Chakrawarty

D) Robert

• question_answer254) Genes are located in:

A) chromosomes

B) ribosomes

C) lysosomes

D) sphaerosomes

• question_answer255) In Amoeba, osmoregulation takes place by:

A) vontractile vacuole

B) ectoplasm

C) pseudopodia

D) hyaloplasm

• question_answer256) The infective stage of Plasmodium in humans is:

A) sporozoite

B) trophozoite

C) gametocyte

D) merozoite

• question_answer257) In Plasmodium ookinete is formed by:

A) trophozoite

B) zygote

C) sporozoite

D) merozoite

• question_answer258) In Plsmodium signet ring stage is formed during:

A) exo-erythrocytic schizogony

B) erythrocytic schizogony

C) sporogony

D) gamogony

• question_answer259) During unfavourable conditions Amoeba reproduces through:

A) binary fission

B) sporulation

C) multiple fission

D) conjugation

A) frog

B) starfish

C) humans

D) Pheretima

• question_answer261) In Hydra reproduction occurs in favorable conditions :

A) by budding

B) by gametes

C) by gemmules

D) binary fission

• question_answer262) Haemocoel is present in:

A) Pheretima

B) Periplaneta

C) Sponge

D) Ascaris

• question_answer263) Chitin as exoskeleton found in:

A) Periplaneta

B) Ascaris

C) Pheretima

D) Hydra

• question_answer264) Pseudocoel is present in:

A) Periplaneta

B) Ascaris

C) Pheretima

D) Hydra

• question_answer265) Ascaris is found in:

A) body cavity

B) lymph nodes

C) tissue

D) alimentary canal

A) a parasite

B) a autotroph

C) facultative autotroph

D) facultative heterotrophy

• question_answer267) Alimentary canal is absent in:

A) Cestoda

B) Gastropoda

C) Nematoda

D) Pelecypoda

• question_answer268) Metameric segmentation is the main feature of:

A) Annelida

B) Echinodermata

C) Arthropoda

D) Coelenterata

• question_answer269) Naked DNA without histones is found in:

A) prokaryotes

B) eukaryotes

C) protozoa

D) coelenterate

• question_answer270) Nematoblasts are formed by :

A) interstitial cells

B) gland cells

C) mesoepithelial cells

D) nerve cells

• question_answer271) Yellow spot is found in :

A) muscles

B) nerves

C) kidney

D) eyes

• question_answer272) Spindles are formed by:

A) microtubules

B) endoplasmic reticulum

C) golgi body

D) peroxisomes

• question_answer273) Scales are found in :

A) pisces

B) rabbit

C) human

D) rat

• question_answer274) Which is not correct for birds?

A) Exothermic

B) Pneumatic bones

C) Lungs with air sacs

D) Amniotes

• question_answer275) Which is not a part of hindbrain?

A) Thalamus

B) Cerebellum

C) Pons

D) Medulla

• question_answer276) Types of salivary glands present in rabbit are :

A) one

B) two

C) three

D) four

• question_answer277) Which is not in pair in rabbit?

A) Azygous vein

B) Hemizygous vein

C) Caudal vein

D) All of these

• question_answer278) Canal system is present in phylum :

A) Annelida

B) Porifera

C) Acanthocephala

D) Echinodermata

A) skin cells

B) heart cells

C) kidney cells

D) all of these

• question_answer280) Book lungs are the respiratory organs in:

A) protozoans

B) cnidarians

C) arthropodes

D) amphibians

A) Amphibia

B) Reptilia

C) Pisces

D) Aves

• question_answer282) Cleavage found in mesolecithal egg is:

A) holoblastic and equal

B) holoblastic and unequal

C) meroblastic

D) discoidal

• question_answer283) Egg of frog is:

A) alecithal

B) macrolecithal

C) telolecithal

D) mesolecithal

• question_answer284) Which is formed in gastrulation?

A) Archenteron

B) Heart

C) Brain

D) None of these

• question_answer285) Which is the function of nor-epinephrin ?

A) Increase blood pressure

B) Urine formation

D) None of the above

• question_answer286) Ammonia is converted into urea in :

A) kidney

B) lungs

C) liver

D) spleen

• question_answer287) Vitamin C is present as :

A) oxalic acid

B) glutemic acid

C) ascorbic acid

D) citric acid

• question_answer288) Cortis organ is present in :

A) Reisners membrane

B) Scala vestibule

C) Basilars membrane

D) Middle lamella

• question_answer289) Eggs of cockroach give rise to:

A) nymph

B) caterpillar

C) larva

D) pupa

• question_answer290) Typhlosole is found in:

A) Pheretima

B) Periplaneta

C) Hydra

D) Ascaris

• question_answer291) Which is not an insect?

A) Spider

B) Housefly

C) Cockroach

D) Mosquito

• question_answer292) Echolocation system is found in:

A) Equns

B) Amphibia

C) Bat

D) Oryctolagus

• question_answer293) Which is a reptile?

A) Salamander

B) Newt

D) Turtles

• question_answer294) Covering of vacuoles is formed by :

A) plasma membrane

B) tonoplast

C) leucoplast

D) symplast

• question_answer295) Phenomenon of industrial melanism demonstrates :

A) reproductive isolation

B) genetic isolation

C) natural selection

D) geographical isolation

• question_answer296) Which sugar is present in nucleic acid?

A) Pentose

B) Hexose

C) Fructose

D) Glucose

• question_answer297) Which of the following maintain the shape of cell?

A) Osmotic pressure

B) Turgor pressure

C) Wall pressure

D) Osmosis

• question_answer298) Vivipary is found in :

A) Coelenterata

B) Protozoa

C) Rabbit

D) Pisces

• question_answer299) The ultimate energy source of ecosystem is :

A) solar energy

B) biomass

C) producer

D) carbohydrates

• question_answer300) Testis fail to descend in scrotal sacs, this condition is called as :

A) cryptorchidism

B) hernia

C) castrection

D) none of these