# Solved papers for RAJASTHAN ­ PMT Rajasthan - PMT Solved Paper-2009

### done Rajasthan - PMT Solved Paper-2009

• question_answer1) The value of current J in the circuit will be

A) 1.7 A

B) 2.1 A

C) 3 A

D) zero

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• question_answer2) Two plane mirrors are inclined to each other at angle $60{}^\circ$. Ray incident on first mirror parallel to the second mirror becomes parallel to first mirror after reflection. Angle of deviation is

A) $30{}^\circ$

B) $60{}^\circ$

C) $90{}^\circ$

D) $120{}^\circ$

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• question_answer3) The equivalent capacitance of the circuit will be

A) $\text{1}\text{F}$

B) $\text{3}\text{F}$

C) $\text{9}\text{F}$

D) $\text{4}\text{F}$

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• question_answer4) If the equivalent capacitance between A and B is $\text{1}\text{F,}$then the value of C will be

A) $\text{2}\text{F}$

B) $\text{4}\text{F}$

C) $\text{3}\text{F}$

D) $\text{6}\text{F}$

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• question_answer5) If the input is given between A and C, then the output at the ends of R will be

A) fully rectified

B) half rectified

C) AC

D) None of these

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• question_answer6) If the acceleration-displacement graph of simple harmonic motion of a particle is given, then the time period of the particle will be

A) $\text{2}\pi$

B) $\text{3}\pi$

C) $4\pi$

D) $\text{5}\pi$

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• question_answer7) Figure shows four, p-V diagram for the given sample of gas. In which case no exchange of heat occurs with the sample?

A) P

B) Q

C) R

D) S

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• question_answer8) The charge on a particle Y is double the charge on particle X. These two particles X and Y after being accelerated through the same potential difference enter a region of uniform magnetic field and describe circular paths of radii R1 and R2 respectively. The ratio of the mass of X to that of Y is

A) ${{(2{{R}_{1}}/{{R}_{2}})}^{2}}$

B) ${{({{R}_{1}}/2{{R}_{2}})}^{2}}$

C) $R_{1}^{2}/2R_{2}^{2}$

D) $2{{R}_{1}}/{{R}_{2}}$

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• question_answer9) In a step up transformer the turn ratio is 1 : 10. A resistance of$200\,\Omega$connected across the secondary is drawing a current of 0.5 A. What is the primary voltage and current?

A) 50 V, 1 A

B) 10 V, 5 A

C) 25 V, 4 A

D) 20 V, 2 A

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• question_answer10) Dimensions of ${{\varepsilon }_{0}}$ are

A) $\text{ }\!\![\!\!\text{ M}{{\text{L}}^{\text{-1}}}{{\text{T}}^{\text{2}}}\text{A }\!\!]\!\!\text{ }$

B) $\text{ }\!\![\!\!\text{ }{{\text{M}}^{2}}{{\text{L}}^{\text{-3}}}{{\text{T}}^{\text{2}}}\text{A }\!\!]\!\!\text{ }$

C) $\text{ }\!\![\!\!\text{ }{{\text{M}}^{-1}}{{\text{L}}^{\text{-3}}}{{\text{T}}^{\text{4}}}{{\text{A}}^{2}}\text{ }\!\!]\!\!\text{ }$

D) $\text{ }\!\![\!\!\text{ }{{\text{M}}^{2}}{{\text{L}}^{\text{3}}}{{\text{T}}^{\text{-2}}}\text{A }\!\!]\!\!\text{ }$

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• question_answer11) Dimensions of $\frac{R}{L}$are

A) $[{{T}^{2}}]$

B) $[T]$

C) $[{{T}^{-1}}]$

D) $[{{T}^{-2}}]$

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• question_answer12) The unit of magnetic moment is

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

B) A-m

C) $A-{{m}^{3}}$

D) $kg-{{m}^{3}}$

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• question_answer13) In SI system the unit of dipole moment is

A) C-m

B) $C-{{m}^{2}}$

C) $C/{{m}^{2}}$

D) C/m

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• question_answer14) Electron volt is a unit of

A) potential

B) charge

C) power

D) energy

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• question_answer15) Which of the following can be written as$\text{kg-}{{\text{m}}^{\text{2}}}{{\text{A}}^{\text{-2}}}{{\text{T}}^{\text{-2}}}\text{?}$

A) Inductance

B) Reactance

C) Capacitance

D) Resistance

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• question_answer16) If the frequency of${{K}_{\alpha ,}}$ X-ray of the element of atomic number 31 is$f,$ then the frequency of${{K}_{\alpha ,}}$ X-ray for atomic number 51 is

A) 25/9 $f$

B) 16/25$f$

C) 9/25 $f$

D) zero

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• question_answer17) A bird weighing 1 kg sitting on the base of a wire mesh cage weighing 1.5 kg. The bird starts flying in the cage. The weight of the bird cage assembly will be

A) 1250g

B) 1500g

C) 1750g

D) None of these

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• question_answer18) If the escape velocity for a monkey from the earth surface is 11.2 km/s, then the escape velocity for the elephant is

A) less than 11.2

B) more than 11.2

C) 11.2 km/s

D) None of these

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• question_answer19) If the sphere of iron is heated, then its

A) density decreases

B) volume increases

C) radius decreases

D) None of these

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• question_answer20) If a bar magnet is droping through the copper ring, then its velocity

A) decreases

B) increases

C) remain unaffected

D) None of these

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• question_answer21) The power factor of a good choke coil is

A) nearly zero

B) exactly zero

C) nearly one

D) exactly one

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• question_answer22) If two spheres of same masses and radius are brought in contact, then the force of attraction between them will be proportional to

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

B) ${{r}^{3}}$

C) ${{r}^{6}}$

D) ${{r}^{4}}$

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• question_answer23) Capacitors are used for

A) AC

B) DC

C) Both AC and DC

D) None of these

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• question_answer24) The ratio of current flowing through primary and secondary of a transformers depends on

A) number of turns

B) resistance

C) capacitance

D) inductance

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• question_answer25) A proton, a deuteron and an a-particle having the same momentum, enters a region of uniform electric field between the parallel plates of a capacitor. If the electric field is perpendicular to the initial direction of the particles. Then, the ratio of deviations of these particles

A) 1 : 2 : 8

B) 1 : 2 : 4

C) 1 : 2 : 2

D) 1 : 1 : 2

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• question_answer26) If a radioactive substance decays $\frac{\text{1}}{\text{16}}\text{th}$ of its original amount in 2 h, then the half-life of that substance is

A) 15 min

B) 30 min

C) 45 min

D) None of these

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• question_answer27) If on applying the potential of 20 V on a conductor its conductance becomes$8\,{{(\Omega )}^{-1}},$ then the current flowing through it will be

A) 120 A

B) 160 A

C) 90 A

D) 80 A

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• question_answer28) Equivalent resistance of the given circuit is

A) R

B) R/2

C) R/4

D) R/6

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• question_answer29) In a biprism experiment by using light of wavelength $5000\overset{\text{o}}{\mathop{\text{A}}}\,,$ 5 mm wide fringes are obtained on a screen 1.0 m away from the coherent sources. The separation between the two coherent sources is

A) 1.0 mm

B) 0.1 mm

C) 0.05 mm

D) 0.01 mm

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• question_answer30) The power of lens used by a short-sighted person is -2 D. Find the maximum distance of an object, which he can see without spectacles

A) 25 cm

B) 50 cm

C) 100 cm

D) 10 cm

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• question_answer31) Kirchhoffs first law $(\Sigma i=0)$ expresses the conservation of

A) energy

B) charge

C) momentum

D) None of these

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• question_answer32) In p-type semiconductors majority charge carriers are

A) electrons

B) holes

C) neutrons

D) protons

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• question_answer33) A $1\,\mu F$ capacitance of TV is subjected to 4000 V potential difference. The energy stored in the capacitor is

A) 8 J

B) 16 J

C) $4\times {{10}^{-3}}\,J$

D) $2\times {{10}^{-3}}\,J$

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• question_answer34) A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J the angle, which the force makes with the direction of motion of the body is

A) $0{}^\circ$

B) $30{}^\circ$

C) $60{}^\circ$

D) $90{}^\circ$

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• question_answer35) A particle of mass m is projected with a velocity v making an angle of $45{}^\circ$ with the horizontal. The magnitude of angular momentum of the projectile about the axis of projection, when the particle is at maximum height

A) zero

B) $\frac{m{{v}^{3}}}{4\sqrt{2g}}$

C) $\frac{m{{v}^{3}}}{\sqrt{2g}}$

D) $\frac{m{{v}^{2}}}{2g}$

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• question_answer36) If the moment of inertia of a disc about an axis tangential and parallel to its surface be$l,$then what will be the moment of inertia about the axis tangential but perpendicular to the surface?

A) $\frac{6}{5}I$

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

C) $\frac{3}{2}I$

D) $\frac{5}{4}I$

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• question_answer37) The magnetic needle of a tangent galvanometer is deflected by an angle $30{}^\circ$ due to a magnet. The horizontal component of earths magnetic field is $0.34\,\times {{10}^{-4}}T$ along the plane of the coil. The intensity of magnetic field of magnet is

A) $1.96\,\times {{10}^{-4}}T$

B) $1.96\,\times {{10}^{-5}}T$

C) $1.96\,\times {{10}^{4}}T$

D) $1.96\,\times {{10}^{5}}T$

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• question_answer38) A coil of resistance R and inductance L is connected to a battery of emf E volt. The final current in the coil is

A) $\text{E/R}$

B) $\text{E/L}$

C) $\sqrt{E/({{R}^{2}}+{{L}^{2}})}$

D) $\sqrt{\frac{EL}{({{R}^{2}}+{{L}^{2}})}}$

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• question_answer39) The refractive indices of violet and red light are 1.54 and 1.52 respectively. If the angle of the prism is $10{}^\circ$, the angular dispersion is

A) $0.02{}^\circ$

B) $0.2{}^\circ$

C) $3.06{}^\circ$

D) $30.6{}^\circ$

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• question_answer40) The focal lengths of the objective and eye-piece of a telescope are respectively 100 cm and 2 cm. The moon substends an angle of $0.5{}^\circ$ at the eye. If it is looked through the telescope, the angle subtended by the moons image will be

A) $100{}^\circ$

B) $50{}^\circ$

C) $25{}^\circ$

D) $10{}^\circ$

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• question_answer41) The temperature of a body on Kelvin scale is found to be x K. When it is measured by Fahrenheit thermometer, it is found to be$x{}^\circ F$, then the value of x is

A) 30

B) 313

C) 574.25

D) 301.25

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• question_answer42) 42. Two containers of equal volume contain the same gas at pressure${{P}_{1}}$and${{P}_{2}}$and absolute temperature${{T}_{1}}$and${{T}_{2}}$respectively. On joining the vessels the gas reaches a common pressure p and common temperature T. The ratio p/T is equal to

A) $\frac{{{P}_{1}}}{{{T}_{1}}}+\frac{{{P}_{2}}}{{{T}_{2}}}$

B) $\frac{{{p}_{1}}{{T}_{1}}+{{p}_{2}}{{T}_{2}}}{{{({{T}_{1}}+{{T}_{2}})}^{2}}}$

C) $\frac{{{p}_{1}}{{T}_{2}}+{{p}_{2}}{{T}_{1}}}{{{({{T}_{1}}+{{T}_{2}})}^{2}}}$

D) $\frac{{{p}_{1}}}{2{{T}_{1}}}\,+\frac{{{p}_{2}}}{2{{T}_{2}}}$

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• question_answer43) $1\,c{{m}^{3}}$ of water at its boiling point absorbs 540 cal of heat to become steam with a volume of $1671\,c{{m}^{3}}$. If the atmospheric pressure $=1.013\times {{10}^{5}}\,N/{{m}^{2}}$ and the mechanical equivalent of heat= 4.19J/cal, the energy spent in this process in overcoming intermolecular forces is

A) 540 cal

B) 40 cal

C) 500 cal

D) zero

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• question_answer44) N atoms of a radioactive element emit n-alpha particles per second. The half-life of the element is

A) $\frac{n}{N}s$

B) $\frac{N}{n}s$

C) $\frac{0.693N}{n}s$

D) $\frac{0.693n}{N}s$

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• question_answer45) Two long parallel wires P and Q are both perpendicular to the plane of the paper with distance 5 m between them. If P and Q carry current of 2.5 A and 5 A respectively in the same direction, then the magnetic field at a point half way between the wires is

A) $\frac{\sqrt{3}{{\mu }_{0}}}{2\pi }$

B) $\frac{{{\mu }_{0}}}{\pi }$

C) $\frac{3{{\mu }_{0}}}{2\pi }$

D) $\frac{{{\mu }_{0}}}{2\pi }$

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• question_answer46) An alternating potential of frequency$f$is applied on a circuit containing a resistance R and a choke L in series. The impedance of this current is

A) $R+2\pi fL$

B) $\sqrt{{{R}^{2}}+4{{\pi }^{2}}{{f}^{2}}{{L}^{2}}}$

C) $\sqrt{{{R}^{2}}+{{L}^{2}}}$

D) $\sqrt{{{R}^{2}}+2\pi fL}$

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• question_answer47) There is a voltmeter in a circuit. In order to triple its range, the resistance of how much value should be used?

A) 2R

B) R/2

C) 3R

D) 4R

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• question_answer48) A wire is bent in the form of a triangle now the equivalent resistance R between its one end and the midpoint of the side is

A) $\frac{5R}{12}$

B) $\frac{7R}{12}$

C) $\frac{3R}{12}$

D) $\frac{R}{12}$

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• question_answer49) Which of the following is incorrect?

A) ${{C}_{V}}=\frac{R}{\gamma -1}$

B) ${{C}_{P}}=\frac{\gamma R}{\gamma -1}$

C) $\frac{{{C}_{P}}}{{{C}_{V}}}=\gamma$

D) ${{C}_{P}}-{{C}_{V}}=2R$

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• question_answer50) A mass of 20 kg moving with a speed of 10 m/s collides with another stationary mass of 5 kg. As a result of the collision both masses stick together. The kinetic energy of the composite mass will be

A) 600 J

B) 800 J

C) 1000 J

D) 1200 J

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• question_answer51) The electric field between two parallel plates of a capacitor is $2.1\,\times {{10}^{-5}}$. If a medium is inserted between the plates than the electric field becomes $1.0\,\times {{10}^{-5}}$. Now, the value of dielectric will be

A) 2

B) 3

C) 4

D) 5

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• question_answer52) A ray of light propagates from glass (refractive index = 3/2) to water (refractive index = 4/3). The value of the critical angle is

A) ${{\sin }^{-1}}\left( \frac{1}{2} \right)$

B) ${{\sin }^{-1}}\left( \sqrt{\frac{8}{9}} \right)$

C) ${{\sin }^{-1}}\left( \frac{8}{9} \right)$

D) ${{\sin }^{-1}}\left( \frac{5}{7} \right)$

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• question_answer53) An electric heater of resistance$6\,\Omega$ is run for 10 min on a 120 V line. The energy liberated in this period of time is

A) $7.2\,\times {{10}^{3}}J$

B) $14.4\,\times {{10}^{5}}J$

C) $43.2\,\times {{10}^{4}}J$

D) $28.8\,\times {{10}^{4}}J$

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• question_answer54) Lenzs law gives

A) the magnitude of the induced emf

B) the direction of the induced current

C) both the magnitude and direction of the induced current

D) the magnitude of the induced current

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• question_answer55) When two bodies collide elastically, then

A) kinetic energy of the system alone is conserved

B) only momentum is conserved

C) both energy and momentum are conserved

D) neither energy nor momentum is conserved

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• question_answer56) A satellite moves around the earth in a circular orbit of radius r with speed v. If the mass of the satellite is M, its total energy is

A) $-1/2M_{v}^{2}$

B) $1/2M_{v}^{2}$

C) $3/2M_{v}^{2}$

D) $M_{v}^{2}$

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• question_answer57) A telescope, consisting of an objective of focal length 60 cm and a single eye lens of focal length 5 cm is of cussed on a distant object is such a way that parallel rays comes out from the eye lens. If the object subtends an angle $2{}^\circ$ at the objective the angle subtended by the image at the eye is

A) $10{}^\circ$

B) $24{}^\circ$

C) $50{}^\circ$

D) $1/6{}^\circ$

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• question_answer58) If the steel bob of a simple pendulum is replaced by a wooden bob, then its time period will

A) increase

B) decrease

C) remains the same

D) first increases and then decreases

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• question_answer59) An electric dipole is placed along the x-axis at the origin 0. A point P is at a distance of 20 cm from this origin such that OP makes an angle$\text{/3}$with the x-axis. If the electric field at P makes an angle $\theta$ with the x-axis, the value of $\theta$ would be

A) $\frac{\pi }{3}$

B) $\frac{\pi }{3}+{{\tan }^{-1}}\left( \frac{\sqrt{3}}{2} \right)$

C) $\frac{2\pi }{3}$

D) ${{\tan }^{-1}}\left( \frac{\sqrt{3}}{2} \right)$

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• question_answer60) The wavelength of light in two liquids x and y are $3500\overset{\text{o}}{\mathop{\text{A}}}\,$ and $7000\overset{\text{o}}{\mathop{\text{A}}}\,$, then the critical angle of x relative to y will be

A) $60{}^\circ$

B) $45{}^\circ$

C) $30{}^\circ$

D) $15{}^\circ$

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• question_answer61) An ideal transformer has 500 rums in the primary and 2500 in the secondary. The meters of the secondary are indicating 200 V, 8 A, under these conditions. What would the meters of the primary read?

A) 100 V, 16 A

B) 40 V, 40 A

C) 160 V, 10 A

D) 80 V, 20 A

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• question_answer62) Sensitivity of potentiometer can be increased by

A) increasing the emf of the cell

B) increasing the length of the potentiometer wire

C) decreasing the length of the potentiometer wire

D) None of the above

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• question_answer63) The following four wires are made of same material and same tension is applied on them. Which one will have maximum increase in length?

A) Length = 100 cm, Diameter = 1 mm

B) Length = 50 cm, Diameter = 0.5 mm

C) Length = 200 cm, Diameter = 2 mm

D) Length = 300 cm, Diameter = 3 mm

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• question_answer64) Radius of a capillary is $2\times {{10}^{-3}}m$. A liquid of weight $6.28\,\times {{10}^{-4}}\,N$ may remain in the capillary, then the surface tension of liquid will be

A) $5\times {{10}^{-3}}\,N/m$

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

C) 5 N/m

D) 50 N/m

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• question_answer65) If two tuning forks A and B are sounded together, they produce 4 beats/s. A is then slightly loaded with wax, they produce 2 beats/s when sounded again. The frequency of A is 256 Hz. The frequency of B will be

A) 250 Hz

B) 252 Hz

C) 260 Hz

D) 262 Hz

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• question_answer66) Two waves are given by$=a\sin (\omega t-kx)$and ${{y}_{2}}=a\cos (\omega t-kx).$The phase difference between the two waves is

A) $\text{/4}$

B) 

C) $\text{/8}$

D) $\text{/2}$

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• question_answer67) Period of oscillation of mass attached to a spring and performing SHM is T. The spring is now cut into four equal pieces and the same mass attached to one piece. Now, the period of its simple harmonic oscillations is

A) 2T

B) T/4

C) T/2

D) T

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• question_answer68) An electron makes a transition from orbit n = 4 to the orbit n = 2 of a hydrogen atom. The wave number of the emitted radiation (R = Rydbergs constant) will be

A) 16/3R

B) 2R/16

C) 3R/16

D) 4R/16

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• question_answer69) A uniform rope of length $l$ lies on a table. If the coefficient of friction is $\mu$ then the maximum length ${{l}_{1}}$ of the part of this rope which can overhang from the edge of the table without sliding down is

A) $\frac{l}{\mu }$

B) $\frac{l}{\mu +1}$

C) $\frac{\mu l}{1+\mu }$

D) $\frac{\mu l}{\mu -1}$

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• question_answer70) The magnetic flux linked with a coil at any instant t is given by $\phi =5{{t}^{3}}\,-100t+300,$ the emf induced in the coil after t = 2 s is

A) - 40 V

B) 40 V

C) 140 V

D) 300 V

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• question_answer71) An ideal heat engine working between temperature${{T}_{1}}$ and ${{T}_{2}}$has an efficiency $\eta$ the new efficiency if temperature of both the source and sink are doubled, will be

A) $\text{/2}$

B) 

C) $2\,$

D) $\text{3}\,$

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• question_answer72) A 50 g bullet moving with velocity 10 m/s strikes a block of mass 950 g at rest and gets embedded into it. The loss in kinetic energy will be

A) 100%

B) 95%

C) 5%

D) 50%

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• question_answer73) The sun radiates energy in all directions. The average radiation received on the earth surface from the sun per second is $1.4\,kW/{{m}^{3}}$. The average distance between sun and earth is $1.5\times {{10}^{11}}m$. The mass lost by the sun per day

A) $4.4\,\times {{10}^{10}}kg$

B) $7.6\,\times {{10}^{14}}kg$

C) $3.8\times {{10}^{11}}kg$

D) $3.8\times {{10}^{14}}kg$

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• question_answer74) Every gas behaves as an ideal gas

A) at high temperature and low pressure

B) at low temperature and high pressure

C) at normal temperature and pressure

D) None of the above

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• question_answer75) In an AC circuit, the current is given by$I=5\,\sin \,(100t-\pi /2)$ and the alternating potential is $V=200\,\sin (100)t$ volt. The power consumed in the circuit is

A) 20 W

B) 40 W

C) 1000 W

D) zero

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• question_answer76) The maximum wavelength of radiation that can produce photoelectric effect in a certain metal is 200 nm. The maximum kinetic energy acquired by electron due to radiation of wavelength 100 nm will be

A) 12.4 eV

B) 6.2 eV

C) 100 eV

D) 200 eV

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• question_answer77) The material of wire of potentiometer is

A) copper

B) steel

C) manganin

D) aluminium

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• question_answer78) A liquid cools down from $70{}^\circ C$ to $60{}^\circ C$ in 5 min. The time taken to cool it from $60{}^\circ C$ to $50{}^\circ C$ will be

A) 5 min

B) lesser than 5 min

C) greater than 5 min

D) lesser or greater than 5 min depending upon the density of the liquid

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• question_answer79) There are 50 turns of a wire in every cm length of a long solenoid. If 4 A current is flowing in the solenoid, the approximate value of magnetic field along its axis at an internal point and at one end will be respectively

A) \begin{align} & \text{12}\text{.6 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-3}}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ & \text{6}\text{.3 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-3}}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ \end{align}

B) \begin{align} & \text{12}\text{.6 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-3}}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ & 25.1\times {{10}^{-3}}Wb/{{m}^{2}} \\ \end{align}

C) \begin{align} & \text{25}\text{.1 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-3}}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ & \text{12}\text{.6 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-3}}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ \end{align}

D) \begin{align} & \text{25}\text{.1 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-5}}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ & \text{12}\text{.6 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{-5}}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ \end{align}

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• question_answer80) Monochromatic light of frequency $5\times {{10}^{14}}Hz$ travelling in vacuum enters medium of refractive index 1.5. Its wavelength in the medium is

A) $4000\overset{\text{o}}{\mathop{\text{A}}}\,$

B) $5000\overset{\text{o}}{\mathop{\text{A}}}\,$

C) $6000\overset{\text{o}}{\mathop{\text{A}}}\,$

D) $5500\overset{\text{o}}{\mathop{\text{A}}}\,$

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• question_answer81) The vector form of Biot-Savarts law for a current carrying element is

A) $d\mathbf{\vec{B}}=\frac{{{\mu }_{0}}}{4\pi }\frac{Id\mathbf{\vec{1}}\,\sin \,\phi }{{{r}^{2}}}$

B) $\mathbf{\vec{B}}=\frac{{{\mu }_{0}}}{4\pi }\frac{Idl\,\mathbf{\vec{r}}}{{{r}^{2}}}$

C) $d\mathbf{\vec{B}}=\frac{{{\mu }_{0}}}{4\pi }\frac{Id\mathbf{\vec{1}}\times \,\mathbf{\vec{r}}}{{{r}^{3}}}$

D) $d\,\mathbf{\vec{B}}=\frac{{{\mu }_{0}}}{4\pi }\frac{Id\mathbf{\vec{1}}\times \,\mathbf{\vec{r}}}{{{r}^{2}}}$

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• question_answer82) The potential energy of a body is given by $U=A-B{{x}^{2}}$ (where x is the displacement). The magnitude of force acting on the particle is

A) constant

B) proportional to x

C) proportional to ${{x}^{2}}$

D) proportional to 1/x

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• question_answer83) Spherical ball of radius R is falling in a viscous fluid of viscosity $\eta$with a velocity v. The retarding viscous force acting on the spherical ball is

A) directly proportional to radius R but inversely proportional to velocity v

B) directly proportional to both radius R and to velocity v

C) inversely proportional to both radius R and velocity v

D) inversely proportional to radius R but directly proportional to velocity v

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• question_answer84) Even Carnot engine cannot give 100% efficiency because we cannot

A) prevent radiation

B) find ideal sources

C) reach absolute zero temperature

D) eliminate friction

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• question_answer85) The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately

A) 540 nm

B) 400 nm

C) 310 nm

D) 220 nm

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• question_answer86) A particle of charge $-16\,\times {{10}^{-18}}C$ moving with velocity $10\,m{{s}^{-1}}$ along the $x$-axis enters a region where a magnetic field of induction B is along the y-axis and an electric field of magnitude $\text{1}{{\text{0}}^{\text{4}}}\text{V/m}$ is along the negative z-axis. If the charged particle continues moving along the $x$-axis, the magnitude of B is

A) ${{10}^{16}}\,Wb/{{m}^{2}}$

B) ${{10}^{5}}\,Wb/{{m}^{2}}$

C) ${{10}^{3}}\,Wb/{{m}^{2}}$

D) ${{10}^{-3}}\,Wb/{{m}^{2}}$

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• question_answer87) If ${{N}_{0}}$ is the original mass of the substance of half-life period ${{T}_{1/2}}\,=5\,yr,$ then the amount of substance left after 15 yr is

A) ${{N}_{0}}/8$

B) ${{N}_{0}}/16$

C) ${{N}_{0}}/2$

D) ${{N}_{0}}/4$

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• question_answer88) A charged ball B hangs from a silk thread S, which makes an angle $\theta$ with a large charged conducting sheet P, as shown in the figure. The surface charge density $\sigma$ of the sheet is proportional to

A) cot $\theta$

B) cot $\theta$

C) tan $\theta$

D) sin $\theta$

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• question_answer89) If${{\theta }_{i}}$is the inversion temperature,${{\theta }_{n}}$is the neutral temperature, ${{\theta }_{c}}$is the temperature of the cold junction for thermocouple, then

A) ${{\theta }_{i}}+{{\theta }_{c}}={{\theta }_{n}}$

B) ${{\theta }_{i}}-{{\theta }_{c}}=2{{\theta }_{n}}$

C) $\frac{{{\theta }_{i}}+{{\theta }_{c}}}{2}\theta n$

D) ${{\theta }_{c}}-{{\theta }_{i}}=2{{\theta }_{n}}$

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• question_answer90) Speeds of two identical cars are u are 4u at a specific instant. The ratio of the respective distances in which the two cars are stopped in the same time

A) 1 : 1

B) 1 : 4

C) 1 : 8

D) 1 : 16

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• question_answer91) Before using the tangent galvanometer, its coil is set up in

A) magnetic meridian

B) perpendicular to magnetic meridian

C) at angle of $45{}^\circ$ to magnetic meridian

D) it does not require any setting

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• question_answer92) Which of the following plots may represent reactance of a series LC combination?

A) a

B) b

C) c

D) d

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• question_answer93) Three identical capacitors are connected together differently. For the same voltage to every combination the one that stores maximum energy is

A) the three in series

B) the three in parallel

C) two in series and the third in parallel with it

D) two in parallel and the third in series with it

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• question_answer94) Each resistance shown in the circuit is of$10\,\Omega$. The equivalent resistance between the points X and Y is

A) $10\,\Omega$

B) $20\,\Omega$

C) $25\,\Omega$

D) $30\,\Omega$

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• question_answer95) A L-R circuit consists of an inductance of 8 mH and a resistance of $4\,\Omega$. The time constant of the circuit is

A) 2ms

B) 12ms

C) 32ms

D) 500 s

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• question_answer96) Three identical resistances A, B and C are connected as shown in the figure. The heat produced will be maximum in

A) B

B) same for A, Band C

C) A

D) B and C

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• question_answer97) A kilowatt hour is equal to

A) $3.6\,\times {{10}^{6}}J$

B) $3.6\times {{10}^{4}}J$

C) $3.6\times {{10}^{3}}J$

D) $6\times {{10}^{-4}}J$

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• question_answer98) Wire P and Q have the same resistance at ordinary (room) temperature. When heated, resistance of P increases and that of Q decreases. We conclude that

A) P and Q are conductors of different materials.

B) P is n-type semiconductor and Q is p-type semiconductor

C) P is semiconductor and Q is conductor

D) P is conductor and Q is semiconductor

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• question_answer99) In the disintegration series $_{92}^{238}U\xrightarrow{\alpha }X\xrightarrow{\text{-}}_{Z}^{A}Y$the values of Z and A respectively will be

A) 92, 236

B) 88, 230

C) 90, 234

D) 91, 234

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• question_answer100) The plane faces of two identical plano-convex lenses, each having focal length of 40 cm, are placed against each other to form a common convex lens. The distance from this lens at which an object must be placed to obtain a real inverted image with magnification equal to unity is

A) 80 cm

B) 40 cm

C) 20 cm

D) 160 cm

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• question_answer101) If an organic compound has$C=40%$, $H=13.3%$,$N=46.67%$ , then the empirical formula for this compound is

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

B) ${{C}_{2}}{{H}_{8}}{{N}_{2}}$

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

D) None of these

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• question_answer102) $TEL$is

A) petrol fuel

B) antiknocking compound

C) gasoline

D) insecticide

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• question_answer103) $DDT$ is related to

A) insecticide

B) fungicide

C) chlorination

D) florination

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• question_answer104) Coordination number 8 : 8 is of

A) $CsCl$

B) $KCl$

C) $NaCl$

D) $ZnS$

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• question_answer105) Which of the following inert gas is soluble in water?

A) $He$

B) $Ne$

C) $Ar$

D) $Xe$

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• question_answer106) Number of peptide bonds in dipeptide is

A) $2$

B) $1$

C) $3$

D) $4$

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• question_answer107) Cupellation method is used for the extraction of

A) $Cu$

B) $Ag$

C) $Na$

D) $Al$

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• question_answer108) Blood sugar is

A) fructose

B) maltose

C) haemoglobin

D) glucose

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• question_answer109) Lactose sugar is formed from

A) $d-$galactose

B) $d-$glucose

C) $d-$galactose and d-glucose

D) $d-$glucose and d-fructose

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• question_answer110) The values for all the quantum numbers for 15th electron of chlorine are

A) $n=3,\,\,l=1,\,\,m=0,\,\,s=-1/2$

B) $n=4,\,\,l=2,\,\,m=0,\,\,s=+1/2$

C) $n=3,\,\,l=1,\,\,m=+1,\,\,s=+1/2$

D) $n=2,\,\,l=0,\,\,m=0,\,\,s=+1/2$

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• question_answer111) The IUPAC name of the compound is C{{H}_{3}}-{{[C{{H}_{2}}]}_{5}}-\underset{\begin{align} & | \\ & C{{H}_{2}} \\ & | \\ & ^{\beta }CHC{{H}_{3}} \\ & | \\ & C{{H}_{2}} \\ & | \\ & C{{H}_{3}} \\ \end{align}}{\mathop{C}}\,H-C{{H}_{2}}-\underset{\begin{align} & | \\ & ^{\alpha }CHC{{H}_{3}} \\ & | \\ & C{{H}_{2}} \\ & | \\ & {{C}_{2}}{{H}_{5}} \\ \end{align}}{\mathop{C}}\,H-{{[C{{H}_{2}}]}_{_{3}}}-C{{H}_{3}}

A) 7[$\beta$methyl butyl], 9 butyl tridecane

B) 3[$\beta$ethyl butyl], 9 ethyl tridecane

C) 2[$\beta$ethyl ethenyl], 8 propyl decane

D) None of the above

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• question_answer112) The correct order of stability of following carbocation is (I) (II) (III) (IV)

A) $(III)>(II)>(I)>(IV)$

B) $(II)>(III)>(I)>(IV)$

C) $(I)>(II)>(III)>(IV)$

D) None of the above

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• question_answer113) Outermost configuration for$Z=25$, is

A) $4{{s}^{2}},\,\,3{{d}^{5}}$

B) $5{{s}^{2}},\,\,4{{d}^{5}}$

C) $4{{s}^{2}},\,\,3{{d}^{3}}$

D) $4{{s}^{2}},\,\,3{{d}^{1}}$

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• question_answer114) The colour of ${{K}_{2}}C{{r}_{2}}{{O}_{7}}$ in acidic medium is

A) red

B) green

C) yellow

D) pink

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• question_answer115) Baeyers reagent decolorizes which of the following?

A) Alkane

B) Alkene

C) Alkene and alkyne both

D) None of the above

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• question_answer116) When $Mn{{O}_{4}}$ is fused with$KOH$, a colored compound is formed. The product and its colour is

A) $KMn{{O}_{4}}$, purple green

B) $KMn{{O}_{4}}$, purple

C) $M{{n}_{2}}{{O}_{3}}$, brown

D) $M{{n}_{2}}{{O}_{4}}$, black

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• question_answer117) The type of hybridization present in each carbon of benzene is

A) $s{{p}^{3}}$

B) $s{{p}^{2}}$

C) $sp$

D) None of these

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• question_answer118) Total number of isomers of ${{C}_{4}}{{H}_{10}}O$ is

A) 7

B) 4

C) 3

D) 8

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• question_answer119) Vitamin ${{B}_{12}}$ contains

A) $Co$

B) $Fe$

C) $Zn$

D) $Ca$

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• question_answer120) Night blindness is caused due to the deficiency of

A) ${{B}_{12}}$

B) $A$

C) $C$

D) $D$

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• question_answer121) RNA does not contain

A) thymine

B) adenine

C) guanine

D) uracil

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• question_answer122) Reaction of dry $HCl$ with acetone gives

A) aldol

B) chloritone

C) isopropyl alcohol

D) None of these

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• question_answer123) Which of the following is incorrect for radial distribution curve?

A) $n$ $l$ Node $2$ $0$ $1$

B) $3$ $0$ $2$

C) $2$ $1$ $0$

D) $3$ $2$ $1$

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• question_answer124) If ${{H}^{+}}$ concentration of fruit juice is$3.3\times {{10}^{-2}}$, then its $pH$ will be

A) $4.8\,\,basic$

B) $4.8\,\,neutral$

C) $4.8\,\,acidic$

D) $1.6\,\,acidic$

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• question_answer125) ${{C}_{2}}{{H}_{5}}OH\xrightarrow[NaOH]{{{I}_{2}}}A\xrightarrow[KOH]{Aqueous}B$ In equation given above $A$ and $B$ are respectively

A) $CH{{I}_{3}}$and$HCOOK$

B) $CH{{I}_{3}}$and$C{{H}_{3}}COOK$

C) $C{{H}_{4}}$and$HCOOK$

D) $CH{{I}_{3}}$and${{H}_{2}}$

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• question_answer126) Formula of washing soda is

A) $N{{a}_{2}}C{{O}_{3}}\cdot 10{{H}_{2}}O$

B) $N{{a}_{2}}C{{O}_{3}}$

C) $N{{a}_{2}}S{{O}_{4}}\cdot 10{{H}_{2}}O$

D) None of the above

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• question_answer127) $AgN{{O}_{3}}$ gives red colour with

A) $NaCl$

B) $NaBr$

C) $NaI$

D) ${{K}_{2}}Cr{{O}_{4}}$

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• question_answer128) If the value of bond order is zero, then

A) molecule will be stable

B) molecule will be unstable

C) molecule will be in ionic state

D) None of the above

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• question_answer129) Which is responsible for the diagonal relation of lithium with magnesium?

A) Less ionic radii

B) High polarizing power

C) Approximately equal electronegativity and affinity

D) All of the above

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• question_answer130) Trioxane has the formula, it is prepared from

A) formaldehyde

B) methanol

C) dichloromethane

D) vinyl alcohol

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• question_answer131) Natural rubber is

A) butadiene

B) isoprene

C) neoprene

D) None of these

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• question_answer132) Monomer of polythene is

A) ethylene

B) propylene

C) vinyl chloride

D) None of these

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• question_answer133) Bond order of ${{N}_{2}}$ molecule is

A) $3$

B) $2$

C) $1$

D) $0$

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• question_answer134) Which of the following is a proper match?

 $\frac{{{\mathbf{r}}^{\mathbf{+}}}}{{{\mathbf{r}}^{\mathbf{-}}}}$ Shape (A)$0.115-0.225$ (i) Triangular (B)$0.225-0.414$ (ii) Tetrahedral (C)$0.414-0.732$ (iii) Cubic (D)$0.732-1$ (iv) Octahedral

A) $A-i,\,\,B-ii,\,\,C-iv,\,\,D-iii$

B) $A-iii,\,\,B-ii,\,\,C-iv,\,\,D-i$

C) $A-i,\,\,B-iii,\,\,C-i,\,\,D-iv$

D) $A-ii,\,\,B-iv,\,\,C-i,\,\,D-iii$

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• question_answer135) The correct order of acidity of following acids is

A) $>-Cl-C{{H}_{2}}COOH>HCOOH>C{{H}_{3}}COOH$

B) $F-C{{H}_{2}}COOH>Cl-C{{H}_{2}}COOH$

C) $HCOOH>C{{H}_{3}}COOH>Cl-C{{H}_{2}}COOH$

D) None of the above

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• question_answer136) $C{{O}_{2}}$ gas obtained by the combustion of $12\,\,mL$ butane gas is

A) $3\,\,mL$

B) $12\,\,mL$

C) $24\,\,mL$

D) $48\,\,mL$

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• question_answer137) Calomel is

A) $H{{g}_{2}}C{{l}_{2}}$

B) $Hg+H{{g}_{2}}C{{l}_{2}}$

C)

D)

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• question_answer138) In an adiabatic process which of the following is true?

A) $q=+W$

B) $q=0$

C) $\Delta E=q$

D) $p\Delta V=0$

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• question_answer139) The number of paired electrons in $Xe$ atom of $Xe{{F}_{2}}$ is

A) $3$

B) $5$

C) $4$

D) $2$

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• question_answer140) Hydrolysis of $Xe{{F}_{6}}$ gives

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

B) $Xe{{O}_{6}}$

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

D) $Xe{{O}_{4}}$

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• question_answer141) Zwitter ion is

A) dipolar ion

B) ion formed from amino acid

C) internal salt

D) All of the above

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• question_answer142) $IUPAC$name of$[Pt{{(N{{H}_{3}})}_{2}}C{{l}_{2}}]$is

A) diamine dichloro platinum (II)

B) amine, chloro platinum (III)

C) chloro diamine platinum (II)

D) None of the above

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• question_answer143) Nylon obtained by the condensation of adipic acid with hexamethylene diamine

A) nylon 6, 6

B) nylon 7, 6

C) nylon 6, 5

D) nylon 9, 7

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• question_answer144) Equation$\log \frac{{{K}_{2}}}{{{K}_{1}}}=\frac{\Delta H}{2.303R}\left[ \frac{{{T}_{2}}-{{T}_{1}}}{{{T}_{1}}\cdot {{T}_{2}}} \right],\,\,n$

A) van der Waals equation

B) Kirchhoffs equation

C) Gas equation

D) vant Hoff equation

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• question_answer145) Which of the following is a colligative property?

A) Surface tension

B) Viscosity

C) Osmotic pressure

D) Vapour pressure

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• question_answer146) Number of $\alpha$ and $\beta$ emitted in the reaction $_{92}{{U}^{238}}{{\xrightarrow{{}}}_{82}}P{{b}^{206}}$are

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

B) $8\alpha$and$6\beta$

C) $6\alpha$and$4\beta$

D) $4\alpha$and$6\beta$

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• question_answer147) A chemical reaction is catalyzed by $X$ therefore,$X$

A) increases the activation energy

B) does not affect the equilibrium constant of the reaction

C) decreases the enthalpy of the reaction

D) decreases the velocity constant of the reaction

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• question_answer148) The half-life of a radioactive isotope is$3\,\,h$. If the initial mass of the isotope were$256\,\,g$, the mass of it remaining undecayed after $18\,\,h$ would be

A) $8.0\,\,g$

B) $4.0\,\,g$

C) $12.0\,\,g$

D) $16.0\,\,g$

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• question_answer149) According to $MOT$ which of the following is correct for potassium hexa cyano ferrate (III)?

A) It is a octahedral complex

B) ${{t}_{2g}}$ orbital contains the e of metal

C) For iron, overlapping between empty orbitals and ligand orbitals takes place

D) All of the above

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• question_answer150) Radioactive hydrogen is

A) tritium

B) deuterium

C) ortho hydrogen

D) para hydrogen

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• question_answer151) Percentage of oxygen in phenol is

A) $17.02$

B) $15.2$

C) $16$

D) $15$

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• question_answer152) Which of the following differs in$EAN$?

A) $[Co{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}$

B) ${{K}_{4}}[Fe{{(CN)}_{6}}]$

C) ${{K}_{2}}[ZnC{{l}_{4}}]$

D) ${{K}_{2}}[Hg{{I}_{4}}]$

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• question_answer153) Which of the following complex neutralizes three molecules of$AgN{{O}_{3}}$?

A) $[Co{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}$

B) $[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}$

C) $[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]Cl$

D) $[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]$

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• question_answer154) $Zn|\underset{C=1}{\mathop{Z{{n}^{2+}}}}\,||\underset{C=1}{\mathop{C{{u}^{2+}}}}\,|Cu$ If the standard reduction potential of zinc electrode and copper half-cell is $-0.76\,\,V$ and $0.34\,\,V$ respectively then the emf will be

A) $1.1\,\,V$

B) $1.4\,\,V$

C) $1.34\,\,V$

D) None of these

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• question_answer155) Which of the following does not show optical isomerization?

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

B) ${{[Co{{(ox)}_{3}}]}^{3-}}$

C) ${{[Co{{(en)}_{3}}]}^{3+}}$

D) ${{[Cr{{(diph)}_{3}}]}^{3+}}$

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• question_answer156) Solubility product of pure $PbC{{l}_{2}}$ will be

A) ${{K}_{sp}}={{S}^{2}}$

B) ${{K}_{sp}}=4{{S}^{3}}$

C) ${{K}_{sp}}=108\,\,{{S}^{5}}$

D) ${{K}_{sp}}=S$

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• question_answer157) The expression for velocity constant for the second order reaction is

A) $k=\frac{2.303}{t}{{\log }_{10}}\frac{a}{a-x}$

B) $k=\frac{1}{t}\frac{x}{a[a-x]}$

C) $k=\frac{1}{t}\frac{{{x}^{2}}}{{{a}^{2}}{{[a-x]}^{2}}}$

D) None of the above

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• question_answer158) The unit of rate constant for second order reaction is

A) ${{s}^{-1}}$

B) $mol/{{L}^{-1}}$

C) $L\,\,mo{{l}^{-1}}{{s}^{-1}}$

D) ${{L}^{2}}mo{{l}^{-2}}s$

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• question_answer159) Which of the following, on heating with ammonia gives urotropin?

A) Formaldehyde

B) Acetaldehyde

C) Acetone

D) Benzaldehyde

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• question_answer160) Which of the following statement is correct?

A) Basic nature increases on increasing pH

B) Basic nature decreases on increasing pH

C) Acidic nature increases on increasing pH

D) None of the above

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• question_answer161) For the redox reaction $Zn(s)+C{{u}^{2+}}(0.1\,\,M)\xrightarrow{{}}Z{{n}^{2+}}(1M)+Cu(s)$ taking place in a cell, $E_{cell}^{\text{o}}$ is$1.10\,\,V$. ${{E}_{cell}}$ for the cell will be$\left( 2.3303\frac{RT}{F}=0.0591 \right)$

A) $2.14\,\,V$

B) $1.80\,\,V$

C) $0.82\,\,V$

D) $1.07\,\,V$

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• question_answer162) ${{C}_{6}}{{H}_{6}}+C{{l}_{2}}\xrightarrow{Sunlight}$product

A) $BHC$

B) chloro benzene

C) dichloro benzene

D) None of the above

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• question_answer163) The required condition for an ideal solution is

A) $\Delta {{H}_{mix}}=0$

B) $\Delta {{V}_{mix}}\ne 0$

C) ${{p}_{A}}\ne p_{A}^{o}{{X}_{A}}$

D) $\Delta {{H}_{mix}}>1$

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• question_answer164) Interionic distance for $CsCl$ crystal is

A) $a$

B) $a/2$

C) $\frac{\sqrt{3}}{4}a$

D) $\frac{2a}{\sqrt{3}}$

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• question_answer165) How many space lattices are obtained from the different crystal systems?

A) 7

B) 14

C) 32

D) 230

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• question_answer166) Which of the following occurs at anode?

A) Reduction

B) Oxidation

C) Both (a) and (b)

D) None of these

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• question_answer167) Parkes process is used for the extraction of

A) iron

B) sodium

C) silver

D) zinc

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• question_answer168) The common method of extraction of metals from oxide ores is

A) reduction with carbon

B) reduction with hydrogen

C) reduction with aluminium

D) electrolytic method

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• question_answer169) The transition metals mostly are

A) diamagnetic

B) paramagnetic

C) neither diamagnetic nor paramagnetic

D) both diamagnetic and paramagnetic

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• question_answer170) Which of the following is an electron deficient compound?

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

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

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

D) $CC{{l}_{4}}$

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• question_answer171) Aniline reacts with chloroform in the presence of $KOH$ to give

A) phenol

B) chlorobenzene

C) phenyl cyanide

D) phenyl isocyanide

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• question_answer172) Which one of the following is conjugate acid of water in the reaction? ${{H}_{2}}S{{O}_{4}}+{{H}_{2}}O{{H}_{3}}{{O}^{+}}+HSO_{4}^{-}$

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

B) ${{H}_{3}}{{O}^{+}}$

C) $SO_{4}^{2-}$

D) $HSO_{4}^{-}$

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• question_answer173) The product of ${{H}^{+}}$ and $O{{H}^{-}}$ of water will be

A) ${{K}_{w}}={{10}^{-12}}$

B) ${{K}_{w}}={{10}^{-14}}$

C) ${{K}_{w}}={{10}^{-11}}$

D) ${{K}_{w}}={{10}^{-10}}$

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• question_answer174) When methyl cyanide is hydrolyzed in presence of alkali, the product is

A) acetamide

B) methane

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

D) acetic acid

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• question_answer175) For$NaCl$, the${{K}_{sp}}=36\,\,mo{{l}^{2}}{{L}^{-2}}$, the molar concentration of it will be

A) $\frac{1}{36}M$

B) $\frac{1}{16}M$

C) $36\,\,M$

D) $6\,\,M$

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• question_answer176) Four solutions $A,\,\,B,\,\,C,\,\,D$ has glucose$0.5\,\,M$, $NaCl\,\,0.1\,\,M$, $BaC{{l}_{2}}\,\,0.5\,\,M$ and$MgC{{l}_{2}}\,\,0.1\,\,M$, then which of the following will have highest osmotic pressure?

A) Glucose

B) $BaC{{l}_{2}}$

C) $MgC{{l}_{2}}$

D) $NaCl$

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• question_answer177) The highest boiling point is of

A) $FeC{{l}_{2}}$

B) $FeC{{l}_{3}}$

C) $A{{l}_{2}}{{(S{{O}_{4}})}_{3}}$

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

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• question_answer178) For an ionic crystal of the general formula $M$ and coordination number is$6$, the value of radius ratio will be

A) greater than 0.73

B) in between 0.73 and 0.41

C) in between 0.41 and 0.22

D) less than 0.22

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• question_answer179) Which of the following can be used to convert $_{7}^{14}N$into$_{8}^{17}O$?

A) Deutron

B) Proton

C) $\alpha$-particle

D) Neutron

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• question_answer180) ${{N}_{2}}{{O}_{4}}2N{{O}_{2}}-Q$ The unit of ${{K}_{p}}$ for the given reaction is

A) atmosphere

B) atomsphere2

C) atmosphere-1

D) None of these

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• question_answer181) Number of ions for the complex$[Co{{(N{{H}_{3}})}_{4}}Cl]C{{l}_{2}}$ shown by the conductivity measurement, is

A) 2

B) 4

C) 3

D) 1

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• question_answer182) Rusting on iron needs

A) dry air

B) air and water

C) distilled water and carbon dioxide

D) oxygen and carbon dioxide

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• question_answer183) First ionization potential is highest for

A) $Na$

B) $Mg$

C) $Al$

D) None of these

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• question_answer184) Which compound is not a lipid?

A) Lecithin

B) Lysine

C) Cerebroside

D) Cephalin

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• question_answer185) Which one of the following notations shows product incorrectly?

A) $_{96}^{242}Cm(\alpha ,\,\,2m)_{97}^{243}Bk$

B) $_{5}^{10}B(\alpha ,\,\,n)_{7}^{13}N$

C) $_{7}^{14}N(n,\,\,p)_{6}^{14}C$

D) $_{14}^{28}Si(d,\,\,n)_{15}^{29}P$

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• question_answer186) In the equilibrium reaction$2HI(g){{H}_{2}}+{{I}_{3}}$which of the following expressions is true?

A) ${{K}_{p}}={{K}_{c}}$

B) ${{K}_{c}}=2{{K}_{p}}$

C) ${{K}_{p}}>{{K}_{c}}$

D) ${{K}_{c}}={{K}_{p}}{{(RT)}^{2}}$

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• question_answer187) For a reaction of the type $A+B\to$ products, it is observed that doubling the concentration of $A$ causes the reaction rate to be four times as great, but doubling the amount of $B$ does not affect the rate. The rate equation is

A) $Rate=k[A][B]$

B) $Rate=k{{[A]}^{2}}$

C) $Rate=k{{[A]}^{2}}[B]$

D) $Rate=k{{[A]}^{2}}[B]$

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• question_answer188) In the following, the element with the highest electropositivity is

A) copper

B) cesium

C) barium

D) chromium

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• question_answer189) The reaction $C{{H}_{2}}=C{{H}_{2}}+{{H}_{2}}\xrightarrow[{{250}^{o}}-{{300}^{o}}C]{Ni}C{{H}_{3}}-C{{H}_{3}}$ is called

A) Wurtz reaction

B) Kolbes reaction

C) Sabatier-Senderens reaction

D) Carbylamine reaction

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• question_answer190) Unit of first order rate constant is

A) $mol\,\,L\,\,s$

B) $mo{{l}^{-1}}{{L}^{-1}}{{s}^{-1}}$

C) $mol\,\,{{L}^{-1}}{{s}^{-1}}$

D) ${{s}^{-1}},\,\,{{\min }^{-1}}etc$.

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• question_answer191) Which of the following describes the shape of orbital?

A) Principal quantum number

B) Azimuthal quantum number

C) Magnetic quantum number

D) Spin quantum number

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• question_answer192) The formula of a phosphate of a metal$M$, is$MP{{O}_{4}}$. The formula of its nitrate will be

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

B) $M{{(N{{O}_{3}})}_{2}}$

C) $M{{(N{{O}_{3}})}_{3}}$

D) ${{M}_{2}}{{(N{{O}_{3}})}_{2}}$

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• question_answer193) The $d-$block element consists mostly of

A) monovalent metals

B) all non-metals

C) elements which generally form stoichiometric metal oxide

D) many metals with catalytic properties

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• question_answer194) A mixture containing $C{{u}^{2+}}$ and $N{{i}^{2+}}$ can be separated for identification by

A) passing ${{H}_{2}}S$ in acid medium

B) passing ${{H}_{2}}S$ in alkaline medium

C) passing ${{H}_{2}}S$ in neutral medium

D) passing ${{H}_{2}}S$ in dry mixture

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• question_answer195) Strongest Bronsted base among the following anions is

A) $ClO$

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

C) $ClO_{3}^{-}$

D) $ClO_{4}^{-}$

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• question_answer196) Which one of the following is a good conductor of electricity?

A) Diamond

B) Graphite

C) Silicon

D) Amorphous carbon

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• question_answer197) Which one of the following is an example of non-typical transition elements?

A) $Li,\,\,K,\,\,Na$

B) $Be,\,\,Al,\,\,Pb$

C) $Zn,\,\,Cd,\,\,Hg$

D) $Ba,\,\,Ca,\,\,Sr$

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• question_answer198) Which of the following has zero dipole moment?

A) $ClF$

B) $PC{{l}_{3}}$

C) $Si{{F}_{4}}$

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

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• question_answer199) In galvanic cell, the salt bridge is used to

A) complete the circuit

B) reduce the electric resistance in the cell

C) separate cathode from anode

D) carry salts for the chemical reaction

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• question_answer200) Reduction of methyl isocyanide gives

A) ethylamine

B) methylamine

C) dimethylamine

D) trimethylamine

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• question_answer201) Perianth is represented by

A) glumes

B) lemma

C) lodicules

D) palea

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• question_answer202) Table sugar is consist of

A) lactose

B) sucrose

C) maltose

D) glucose

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• question_answer203) The terminator gene technology causes

A) failure of seed setting after one generation

B) breakage of seed dormancy

C) early flowering in plants

D) None of the above

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• question_answer204) The term totipotency refers to

A) the capability of organism to regenerate its lost parts

B) capability of somatic cells to produce complete organism

C) the introduction of foreign gene in a cells DNA

D) the technique of growing immature embryos

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• question_answer205) Work of Beadle and Tatum on Neurospora rassa proved that

A) Replication of DNA is semi-conservative

B) viruses have genetic material

C) every gene is responsible for specific enzymes

D) plant cells are to tipotent

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• question_answer206) Polyploidy means occurrence of

A) haploid sets of chromosomes

B) diploid sets of chromosomes

C) more than diploid sets of chromosomes

D) All of the above

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• question_answer207) The deteriorative processes in plants, that naturally terminate their functional life, are collectively called

A) wilting

B) abscission

C) plasmolysis

D) senescence

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• question_answer208) Which pigment involves in photoperiodic change in plants?

A) Phytochrome

B) Cytochrome

C) Chlorophyll

D) Anthocyanin

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• question_answer209) Linnaen system of plant classification is based on

A) morphological and anatomical characters

B) evolutionary trends

C) floral characters

D) None of the above

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• question_answer210) Succession on secondary base area is

A) primosere

B) subsere

C) xerosere

D) None of these

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• question_answer211) An unrestricted reproductive capacity is called

A) birth rate

B) biotic potential

C) carrying capacity

D) fertility

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• question_answer212) Ubisch bodies are secreted by

A) tapetum

B) exine

C) microspore mother cells

D) endothecium

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• question_answer213) Alginic acid is found in the cell wall of

A) Gigartina

B) Laminaria

C) Gelidium

D) Scytonema

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• question_answer214) Lady finger (bhindi) belongs to

A) Malvaceae

B) Cruciferae

C) Solanaceae

D) Liliaceae

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• question_answer215) P-proteins are associated with

A) sieve tube elements

B) xylem parenchyma

C) trichomes

D) tracheids and vessels

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• question_answer216) Potato is a modification of

A) stem

B) rhizome

C) root

D) leaf

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• question_answer217) Antherozoids of Dryopteris are

A) multiciliated and coiled

B) multiciliated and sickle-shaped

C) biciliated and coiled

D) biciliated and sickle-shaped

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• question_answer218) Ginger multiplies vegetatively by

A) bud

B) tuber

C) stem

D) rhizome

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• question_answer219) In Cycas stem, open vascular bundle is characterized by

A) phloem being sandwitched between xylem

B) cambium present in between xylem and phloem

C) xylem being sandwitched between phloem

D) xylem and phloem occurring on different radii

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• question_answer220) From which part of coconut coir is obtained?

A) Pericarp

B) Mesocarp

C) Epicarp

D) Endocarp

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• question_answer221) Both heterospory and circinate plyxis occur in

A) Dryopteris

B) Finns

C) Cycas

D) Funaria

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• question_answer222) In Funaria, the stomata are found on

A) foot

B) seta

C) capsule

D) All of these

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• question_answer223) Tracheophyta consists of

A) bryophytes only

B) pteridophytes only

C) gymnosperms and angiosperms

D) Both (b) and (c)

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• question_answer224) Green-house effect is mainly caused by

A) CFCs

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

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

D) $CO$

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• question_answer225) Nucellar polyembryony occurs in

A) Corchorus

B) Cirrus

C) Carthamus

D) Zea mays

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• question_answer226) Male gametophyte of angiosperms is reduced o

A) one cell

B) two cells

C) three cells

D) four cells

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• question_answer227) In ${{C}_{3}}$ plants, the first stable product of photosynthesis during dark reaction is

A) PGAL

B) RuBP

C) PGA

D) OAA

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• question_answer228) During the formation of embryo sac, the functional megaspore undergoes

A) two mitotic divisions

B) two meiotic divisions

C) three meiotic divisions

D) three mitotic divisions

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• question_answer229) The first $C{{O}_{4}}$ acceptor in ${{C}_{4}}$ cycle is

A) RuBP

B) PEP

C) PGA

D) OAA

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• question_answer230) The water available to plants for absorption is

A) gravitational water

B) hygroscopic water

C) capillary water

D) chemically bound water

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• question_answer231) Cell wall of fungi is made up of

A) fungal cellulose

B) hemicellulose

C) fungal chitin

D) Both (a) and (c)

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• question_answer232) The plant ash indicates

A) organic matter of plant

B) mineral salts absorbed by plants

C) both mineral salts and organic matter

D) silica absorbed by plants

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• question_answer233) During cell cycle, RNA and non-histone proteins are synthesized in

A) S-phase

B) ${{G}_{\text{o}}}$-phase

C) ${{G}_{2}}$-phase

D) M-phase

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• question_answer234) Which one of the following is the terminal electron acceptor?

A) Molecular $C{{O}_{2}}$

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

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

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

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• question_answer235) Bract is a modified

A) petal

B) sepal

C) leaf

D) involucres

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• question_answer236) Hormone replacing the requirement of vernalization is

A) ethylene

B) auxin

C) gibberellins

D) cytokinin

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• question_answer237) Thigmotropism is best seen in

A) tendrils

B) leaf apex

C) root apex

D) stem apex

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• question_answer238) Transpiration is measured by

A) potometre

B) porometre

C) auxanometre

D) respirometre

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• question_answer239) The function of polymerase chain reaction is

A) transduction

B) DNA amplification

C) translation

D) None of these

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• question_answer240) Mutation is more common when it is present in

A) recessive condition

B) dominant condition

C) constant in population

D) None of the above

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• question_answer241) The most common type of ovule in angiosperms is

A) amphitropous

B) atropous

C) anatropous

D) circinotropous

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• question_answer242) When two hybrids rrTt and Rrtt are crossed, the phenotype ratio of offspring would be

A) 3 : 1

B) 9 : 3 : 3 : 1

C) 1 : 1

D) 1 : 1 : 1 : 1

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• question_answer243) One of the most resistant known biological material is

A) lignin

B) hemicellulose

C) sporopollenin

D) lignocelluloses

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• question_answer244) Energy enters the ecosystem through

A) herbivore

B) carnivore

C) producer

D) decomposer

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• question_answer245) In soil profile, humus is present in

A) horizon-O

B) horizon-A

C) horizon-B

D) horizon-C

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• question_answer246) The smallest angiospermic flower is

A) Wolffia

B) Ranunculus

C) Rafflesia

D) SteHana

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• question_answer247) The pyramid of energy is always

A) opaque

B) horizontal

C) upright

D) inverted

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• question_answer248) The transition zone between the two vegetations of ecosystem is called

A) ecotone

B) ecocline

C) ecosystem

D) ecesis

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• question_answer249) Protein in silk thread is

A) fibroin

B) keratin

C) albumin

D) globulin

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• question_answer250) Thermoregulatory centre of human body is associated with

A) cerebrum

B) cerebellum

C) hypothalamus

D) medulla oblongata

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• question_answer251) Body cavity of adult Ascans is

A) haemocoel

B) amphicoel

C) pseudocoel

D) schizocoel

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• question_answer252) Collar cells are characteristic of

A) earthworm

B) roundworms

C) coelenterata

D) sponges

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• question_answer253) In honey bee, the drones are

A) sterile male

B) fertile male

C) fertile female

D) sterile female

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• question_answer254) Crypts of Leiberkuhn are involved in

A) secretion of succus entericus

B) secretion of rennin

C) secretion of ptyalin

D) digestion of food

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• question_answer255) Plasmids are found in

A) virus

B) bacteria

C) fungi

D) viroid

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• question_answer256) Oxygen dissociation curve is

A) sigmoid

B) parabolic

C) hyperbolic

D) straight line

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• question_answer257) Blood leaving the liver and going towards heart is rich in

A) bile

B) urea

C) ammonia

D) oxygen

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• question_answer258) Membrane that covers the vacuole in a plant cell is called

A) tonoplast

B) tonoplasm

C) jacket

D) cell membrane

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• question_answer259) In earthworm, gizzard is found, in which of the following segments?

A) 9th segment

B) 18th segment

C) 13th segment

D) 16th segment

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• question_answer260) The infective stage of Entamoeba histolytica is

A) trophozoite stage

B) binucleated cyst stage

C) tetranucleated cyst stage

D) None of the above

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• question_answer261) The initiation codon in eukaryotes is

A) AUG

B) UGA

C) UAG

D) UAA

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• question_answer262) Pasteurization temperature is

A) $72{}^\circ C$ for 20 minutes

B) $63{}^\circ C$ for 15 seconds

C) $70{}^\circ C$ for 15 seconds

D) $65{}^\circ C$ for 30 minutes

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• question_answer263) The number of heart chambers found in cockroach is

A) 4

B) 7

C) 5

D) 13

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• question_answer264) The ratio of methane, ammonia and hydrogen in Stanley Millers experiment was

A) 3 : 1 : 2

B) 2 : 1 : 2

C) 1 : 2 : 1

D) 5 : 4 : 1

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• question_answer265) Convergent evolution is shown by

A) homologous organ

B) analogous organ

C) vestigial organ

D) All of these

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• question_answer266) Teichoic acid is present in

A) cell wall of Gram positive bacteria

B) cell wall of Gram negative bacteria

C) capsid of virus

D) protoplasm of mycoplasma

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• question_answer267) % sign is used for

A) actinomorphic flower

B) zygomorphic flower

C) incomplete flower

D) epigynous flower

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• question_answer268) Crossing over occurs

A) single strand stage

B) two strand stage

C) four strand stage

D) eight strand stage

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• question_answer269) Ontogeny repeats phylogeny is the statement of which of the following theories?

A) Mutation theory

B) Inheritance theory

C) Recapitulation theory

D) Natural selection theory

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• question_answer270) Darwin proposed the theory of

A) inheritance of acquired characters

B) natural selection

C) recapitulation

D) continuity of germplasm

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• question_answer271) Which of the following is not Darwins conclusion?

A) Survival of the fittest

B) Struggle for existence

C) Inheritance of acquired characters

D) Origin of species by natural selection

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• question_answer272) Nuclear membrane is continuous with

A) rough endoplasmic reticulum

B) smooth endoplasmic reticulum

C) cell membrane

D) Golgi bodies

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• question_answer273) Cosmid is

A) extragenetic material in mycoplasma

B) circular DNA in bacteria

C) extra DNA in bacteria

D) fragment of DNA inserted in bacteria for forming copies

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• question_answer274) XO chromosomal abnormality in humans causes

A) Turners syndrome

B) Downs syndrome

C) Darwins syndrome

D) Klinefelters syndrome

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• question_answer275) Fertilization of ovum takes place in rabbit, man and other placental mammals in

A) ovary

B) fallopian tube

C) cervix

D) uterus

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• question_answer276) At what stage in test tube babies, the zygote is implanted in human female?

A) 32-celled stage

B) 64-celled stage

C) 100-celled stage

D) 164-celled stage

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• question_answer277) Pentoses and hexoses are common

A) monosaccharides

B) disaccharides

C) polysaccharides

D) oligosaccharides

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• question_answer278) Pheromone is

A) a product of endocrine gland

B) used for animal communication

C) messenger RNA

D) always protein

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• question_answer279) Secretion is under control of neurosecretory nerve axons in

A) pineal gland

B) adrenal cortex

C) anterior pituitary

D) posterior pituitary

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• question_answer280) If an isolated strain of DNA is kept at $82-90{}^\circ C$ then

A) it changes into RNA

B) it breaks into two fragments

C) it breaks into many fragments

D) it uncoils and the two strands separate

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• question_answer281) The smallest endocrine gland is

A) thyroid

B) parathyroid

C) pituitary

D) adrenal

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• question_answer282) Ban body in mammals represents

A) all the heterochromatin in female cells

B) one of the two X-chromosomes in somatic cells of females

C) all the heterochromatin in male and female cells

D) the Y-chromosome in somatic cells of male

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• question_answer283) Gland responsible for calcium metabolism is

A) thymus

B) thyroid

C) parathyroid

D) adrenal

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• question_answer284) Which of the following is not a case of epimorphosis?

A) Formation of sperms from small clumps of cells

B) Regeneration of tail in a lizard

C) Replacement of severed arm in starfish

D) Replacement of limb in salamander

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• question_answer285) The daughter born to haemophilic father and normal mother could be

A) normal

B) carrier

C) haemophilic

D) None of these

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• question_answer286) Removal or absence of thymus in early life shall bring about

A) lack of lymphocytes

B) lack of antibodies

C) lack of lymph nodes

D) All of the above

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• question_answer287) Bone marrow is made up of

A) muscular fibre and fatty tissue

B) fatty tissue and areolar tissue

C) fatty tissue and cartilage

D) fatty tissue, areolar tissue and blood vessel

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• question_answer288) Mast cells secrete

A) serotonin

B) heparin

C) histamine

D) All of these

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• question_answer289) Which one is component of ornithine cycle?

A) Ornithine, citrulline and fumaric acid

B) Ornithine, citrulline and arginine

C) Ornithine, citrulline and alanine

D) Amino acids are not used

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• question_answer290) Bidders canal is present in

A) male rabbit

B) male frog

C) female frog

D) Both (b) and (c)

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• question_answer291) Zygomatic arch of rabbit is formed of

A) maxilla, periotic and jugal

B) periotic, jugal and palatine

C) maxilla, squamosal and jugal

D) maxilla, premaxilla and squamosal

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• question_answer292) Role of spleen in mammal is

A) to control blood pressure

B) to assist liver

C) to act as haemopoietic tissue

D) to assist kidneys

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• question_answer293) Excretory product of spider is

A) uric acid

B) ammonia

C) guanine

D) None of these

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• question_answer294) Green glands present in some arthropods help in

A) respiration

B) excretion

C) digestion

D) reproduction

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• question_answer295) Sensation of stomach pain is due to

A) interoceptors

B) exteroceptors

C) proprioceptors

D) teloceptors

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• question_answer296) Right lung of rabbit is divided into

A) four lobes

B) two lobes

C) six lobes

D) eight lobes

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• question_answer297) Haemoglobin is having maximum affinity with

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

B) $CO$

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

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

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• question_answer298) Veliger larva occurs in phylum

A) Mollusca

B) Echinodermata

C) Arthropoda

D) Cnidaria

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• question_answer299) The most recent and direct prehistoric ancestor of present man is

A) Cro-magnon

B) Pre-Neanderthal

C) Neanderthal

D) None of these

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• question_answer300) Darwins finches refers to

A) fossils of birds collected by Darwin at Galapagos islands

B) a type of birds present of Galapagos islands

C) migratory birds collected by Darwin at Galapagos islands

D) fossils of reptiles collected by Darwin at Galapagos islands

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