# Solved papers for Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2006

### done Chhattisgarh PMT Solved Paper-2006

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

A) 1.7 A

B) 2.1 A

C) 3 A

D) zero

• 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) $120{}^\circ$

• question_answer3) The equivalent capacitance of the circuit will be

A) $1.\mu F$

B) $3\mu F$

C) $9\mu F$

D) $4\mu F$

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

A) $2\mu F$

B) $4\mu F$

C) $3\mu F$

D) $6\mu F$

• 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

• 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) 2n

B) 3n

C) An

D) 5n

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

A) P

B) Q

C) R

D) S

• 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 J? and ${{R}_{2}}$ respectively. The ratio of the mass of X to that of V is

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

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

C) $\text{R}\,_{1}^{2}\text{/2R}_{2}^{2}$

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

• 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) 25V, 4 A

D) 20V, 2 A

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

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

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

A) $\text{ }\!\![\!\!\text{ }{{\text{T}}^{\text{2}}}\text{ }\!\!]\!\!\text{ }$

B) $\text{ }\!\![\!\!\text{ T }\!\!]\!\!\text{ }$

C) $\text{ }\!\![\!\!\text{ }{{\text{T}}^{-2}}\text{ }\!\!]\!\!\text{ }$

D) $\text{ }\!\![\!\!\text{ }{{\text{T}}^{-2}}\text{ }\!\!]\!\!\text{ }$

• question_answer12) The unit of magnetic moment is

A) A-m2

B) A-m

C) A-m3

D) kg-m3

• question_answer13) In $\text{SI}$ system the unit of dipole moment is

A) C-m

B) C-m2

C) C/m2

D) C/m

• question_answer14) Electron volt is a unit of

A) potential

B) charge

C) power

D) energy

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

A) Inductance

B) Reactance

C) Capacitance

D) Resistance

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

A) $\text{25/9}f$

B) $\text{16/25}f$

C) $\text{9/25}f$

D) zero

• 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) 1250 g

B) 1500 g

C) 1750g

D) None of these

• 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

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

A) density decreases

B) volume increases

D) None of these

• 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

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

A) nearly zero

B) exactly zero

C) nearly one

D) exactly one

• 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) r2

B) r3

C) r6

D) r4

• question_answer23) Capacitors are used for

A) AC

B) DC

C) Both AC and DC

D) None of these

• 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

• 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

• question_answer26) If a radioactive substance decays $\frac{1}{16}$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

• 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

• question_answer28) Equivalent resistance of the given circuit is

A) R

B) R/2

C) R/4

D) R/6

• 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

• 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) 100cm

D) 10cm

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

A) energy

B) charge

C) momentum

D) None of these

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

A) electrons

B) holes

C) neutrons

D) protons

• question_answer33) A 1 uF capacitance of TV is subjected to 4000 V potential difference. The energy stored in the capacitor is

A) 8 J

B) 16 J

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

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

• 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) $90{}^\circ$

• question_answer35) A particle of mass m is projected with a velocity 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) $\frac{m{{v}^{3}}}{\sqrt{2}g}$

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

• question_answer36) If the moment of inertia of a disc about an axis tangential and parallel to its surface be $I,$ 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) $\frac{5}{4}I$

• question_answer37) The magnetic needle of a tangent galvanometer is deflected by an angle $30{}^\circ$ due to a magnet. The horizontal component of earth's 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) $1.96\times {{10}^{-5}}T$

• 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) E/R

B) E/L

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

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

• 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) $30.6{}^\circ$

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

A) $100{}^\circ$

B) $50{}^\circ$

C) $25{}^\circ$

D) $10{}^\circ$

• 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

• question_answer42) 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 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) $\frac{{{P}_{1}}}{2{{T}_{1}}}+\frac{{{P}_{2}}}{2{{T}_{2}}}$

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

A) 540 cal

B) 40cal

C) 500 cal

D) zero

• 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) $\frac{0.693n}{N}s$

• 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) $\frac{{{\mu }_{0}}}{2\pi }$

• 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) $\sqrt{{{R}^{2}}+2\pi fL}$

• 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

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

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

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

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

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

• 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) ${{C}_{v}}-{{C}_{P}}=2R$

• question_answer50) 50. 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 s; together. The kinetic energy of the compos. mass will be

A) 600 J

B) 800 J

C) 1000J

D) 1200J

• 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

• question_answer52) A ray of light propagates from glass (refracts 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) ${{\sin }^{-1}}\left( \frac{5}{7} \right)$

• question_answer53) An electric heater of resistance $6\,\Omega$ is run are 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) $28.8\times {{10}^{4}}J$

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

• 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

• 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) $M{{v}^{2}}$

• question_answer57) A telescope, consisting of an objective of focal length 60 cm and a single eye lens of focal length 5 cm is focussed 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) $1/6{}^\circ$

• 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

• 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 $\text{ }\!\!\pi\!\!\text{ /3}$with the x-axis. If the electric field at P makes an angle $\text{ }\!\!\theta\!\!\text{ }$ with the x-axis, the value of $\text{ }\!\!\theta\!\!\text{ }$ would be

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

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

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

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

• 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 toy will be

A) $60{}^\circ$

B) $45{}^\circ$

C) $30{}^\circ$

D) $15{}^\circ$

• question_answer61) An ideal transformer has 500 turns 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

• 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

• 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

• question_answer64) Radius of a capillary is $2\times {{10}^{-3}}m.\text{ }A$ 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

• 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

• question_answer66) Two waves are given by ${{y}_{1}}=a\,\sin \,$$(\omega t-kx)$and ${{y}_{2}}=a\,\cos$$(\omega t-kx).$The phase difference between the two waves is

A) $\text{ }\!\!\pi\!\!\text{ /4}$

B) $\text{ }\!\!\pi\!\!\text{ }$

C) $\text{ }\!\!\pi\!\!\text{ /8}$

D) $\text{ }\!\!\pi\!\!\text{ /2}$

• 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

• 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 = Rydberg's constant) will be

A) 16/3R

B) 2R/16

C) 3R/16

D) 4R/16

• question_answer69) A uniform rope of length $I$ 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) $\frac{1}{\mu }$

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

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

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

• 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) -40V

B) 40V

C) 140V

D) 300V

• 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) $\eta /2$

B) $\eta$

C) $2\eta$

D) $3\eta$

• 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%

• question_answer73) The sun radiates energy in all directions. The average radiation received on the earth surface from the sun per second is $1.4\text{ }kW/{{m}^{3}}.$ 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) $3.8\times {{10}^{14}}kg$

• 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

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

A) 20 W

B) 40 W

C) 1000 W

D) zero

• 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

• question_answer77) The material of wire of potentiometer is

A) copper

B) steel

C) manganin

D) aluminium

• 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

• 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} & 12.6\times {{10}^{-3}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ & 6.3\times {{10}^{-3}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ \end{align}

B) \begin{align} & 12.6\times {{10}^{-3}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ & 25.1\times {{10}^{-3}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ \end{align}

C) \begin{align} & 25.1\times {{10}^{-3}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ & 12.6\times {{10}^{-3}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ \end{align}

D) \begin{align} & 25.1\times {{10}^{-5}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ & 12.6\times {{10}^{-5}}\text{Wb/}{{\text{m}}^{\text{2}}} \\ \end{align}

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

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

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

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

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

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

• 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

C) proportional to x2

D) proportional to 1/x

• 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 JR 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

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

B) find ideal sources

C) reach absolute zero temperature

D) eliminate friction

• 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

• question_answer86) A particle of charge $-16\times {{10}^{-18}}C$moving with velocity $10\text{ }m{{s}^{-1}}$ 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 ${{10}^{4}}/m$is along the negative z-axis. If the charged particle continues moving along the x-axis, the magnitude of B is

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

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

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

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

• question_answer87) If No 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) ${{N}_{0}}\text{/8}$

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

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

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

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

A) $\cot \,\text{ }\!\!\theta\!\!\text{ }$

B) $\cot \,\text{ }\!\!\theta\!\!\text{ }$

C) $\tan \,\text{ }\!\!\theta\!\!\text{ }$

D) $\sin \,\text{ }\!\!\theta\!\!\text{ }$

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

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

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

C) $\,\frac{{{\text{ }\!\!\theta\!\!\text{ }}_{i}}\text{+}\,{{\text{ }\!\!\theta\!\!\text{ }}_{c}}}{2}={{\text{ }\!\!\theta\!\!\text{ }}_{n}}$

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

• 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

• 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

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

A) a

B) b

C) c

D) d

• 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

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

A) $10\,\Omega$

B) $20\,\Omega$

C) $25\,\Omega$

D) $30\,\Omega$

• 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) 500s

• 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, B and C

C) A

D) B and C

• question_answer97) A kilowatt hour is equal to

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

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

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

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

• question_answer98) Wire P and Q have the same resistance at ordinary (room) temperature. When heated, resistance of? 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

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

A) 92,236

B) 88,230

C) 90, 234

D) 91, 234

• 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) 80cm

B) 40cm

C) 20cm

D) 160cm

• question_answer101) If an organic compound has $C=40%,$ $H=13.3%,$$N=46.67%\text{ },$ 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

A) petrol fuel

B) anti knocking compound

C) gasoline

D) insecticide

• question_answer103) DDT is related to

A) insecticide

B) fungicide

C) chlorination

D) florination

• question_answer104) Coordination number $8:8$ is of

A) $CsCl$

B) $KCl$

C) $NaCl$

D) $ZnS$

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

A) $He$

B) $Ne$

C) $Ar$

D) $Xe$

• question_answer106) Number of peptide bonds in dipeptide is

A) $2$

B) $1$

C) $3$

D) $4$

• question_answer107) Cupellation method is used for the extraction of

A) $Cu$

B) $Ag$

C) $Na$

D) $Al$

A) fructose

B) maltose

C) haemoglobin

D) glucose

• 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

• 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) $n=2,l=0,m=0,s=+1/2$

• question_answer111) The IUPAC name of the compound is$\text{C}{{\text{H}}_{\text{3}}}-[C{{H}_{2}}]s-CH-\underset{\begin{smallmatrix} | \\ \underset{\underset{\underset{C{{H}_{3}}}{\overset{C{{H}_{2}}}{\mathop{|}}}\,}{\overset{\beta CHC{{H}_{3}}}{\mathop{|}}}\,}{\overset{C{{H}_{2}}}{\mathop{|}}}\, \end{smallmatrix}}{\mathop{\text{CH}}}\,-\text{C}{{\text{H}}_{\text{2}}}-\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ \underset{\underset{\begin{smallmatrix} \text{ }\!\!|\!\!\text{ } \\ {{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}} \end{smallmatrix}}{\mathop{\text{C}{{\text{H}}_{\text{2}}}}}\,}{\overset{\text{ }\!\!\alpha\!\!\text{ CHC}{{\text{H}}_{\text{3}}}}{\mathop{\text{ }\!\!|\!\!\text{ }}}}\, \end{smallmatrix}}{\mathop{\text{CH}}}\,-{{\text{ }\!\![\!\!\text{ C}{{\text{H}}_{\text{2}}}\text{ }\!\!]\!\!\text{ }}_{\text{3}}}-\text{C}{{\text{H}}_{\text{3}}}$

A) $7\text{ }\!\![\!\!\text{ }\beta \text{ }methyl\text{ }butyl],\text{ }9\text{ }butyl\text{ }tridecane$

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

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

D) None of the above

• question_answer112) The correct order of stability of following carbocation is (I) (II) (III) (IV) $C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|}{\mathop{\overset{+}{\mathop{C}}\,}}\,}}\,-C{{H}_{3}}$

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

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

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

D) None of the above

• 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) $4{{s}^{2}}3{{d}^{1}}$

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

A) red

B) green

C) yellow

D) pink

• question_answer115) Baeyer's reagent decolourises which of the following?

A) Alkane

B) Alkene

C) Alkene and alkyne both

D) None of the above

• question_answer116) When $Mn{{O}_{2}}$ is fused with $KOH,$a coloured compound is formed. The product and its colouris

A) ${{K}_{2}}Mn{{O}_{4}},$ purple green

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

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

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

• 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

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

A) $7$

B) $4$

C) $3$

D) $8$

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

A) $Co$

B) $Fe$

C) $Zn$

D) $Ca$

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

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

B) $A$

C) $C$

D) $D$

• question_answer121) RNA does not contain

A) Thymine

C) Guanine

D) Uracil

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

A) aldol

B) chloritone

C) isopropyi alcohol

D) None of these

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

A)

 $n$ $l$ Node 2 0 1

B)

 $n$ $l$ Node 3 0 2

C)

 $n$ $l$ Node 2 1 0

D)

 $n$ $l$ Node 3 2 1

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

A) $4.8\text{ }basic$

B) $4.8\text{ }neutral$

C) $4.8\text{ }acidic$

D) $1.6\text{ }acidic$

• 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 ${{H}_{2}}$

• question_answer126) Formula of washing soda is

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

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

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

D) None of the above

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

A) $NaCl$

B) $NaBr$

C) $NaI$

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

• 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

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

B) High polarizing power

C) Approximately equal electronegativity and affinity

D) All of the above

• question_answer130) Trioxane has the formula it is prepared from

A) formaldehyde

B) methanol

C) dichloromethane

D) vinyl alcohol

B) isoprene

C) neoprene

D) None of these

• question_answer132) Monomer of polythene is

A) ethylene

B) propylene

C) vinyl chloride

D) None of these

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

A) 3

B) 2

C) 1

D) 0

• question_answer134) Which of the following is a proper match? $\frac{{{r}^{+}}}{{{r}^{-}}}$ Shape $0.115-0.225$ (i) Triangular $0.225-0.414$ (ii) Tetrahedral $0.414-0.732$ (iii) Cubic $0.732-1$ (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) $A-ii,B-iv,C-i,D-iii$

• question_answer135) The correct order of acidity of following acids is $C{{H}_{3}}COOH,HCOOH,Cl-C{{H}_{2}}COOH$

A)

B)

C)

D) None of the above

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

A) $\text{3 }mL$

B) $12\text{ }mL$

C) $\text{24 }mL$

D) $\text{48 }mL$

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

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

C)

D)

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

A) $q=+W$

B) $q=0$

C) $\Delta E=q$

D) $p\Delta V=0$

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

A) $3$

B) $5$

C) $4$

D) $2$

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

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

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

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

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

A) Dipolar ion

B) Ion formed from amino acid

C) Internal salt

D) All of the above

• 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

• 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 $9,7$

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

A) van der Waals' equation

B) Kirchoff's equation

C) Gas equation

D) Van?t Hoff equation

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

A) Surface tension

B) Viscosity

C) Osmotic pressure

D) Vapour pressure

• question_answer146) Number of a and p 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) $4\beta$ and $6\beta$

• question_answer147) A chemical reaction is catalysed 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

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

A) $8.0\text{ }g$

B) $4.0\text{ }g$

C) $12.0\text{ }g$

D) $16.0\text{ }g$

• 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

A) Tritium

B) Deuterium

C) Ortho hydrogen

D) Para hydrogen

• question_answer151) Percentage of oxygen in phenol is

A) $17.02$

B) $15.2$

C) $16$

D) $15$

• question_answer152) Which of the following differs in BAN?

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

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

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

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

• question_answer153) Which of the following complex neutralises 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) $[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]$

• 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 $-0.76\text{ }V$and $0.34\text{ }V$respectively then the emf will be

A) $1.1V$

B) $1.4V$

C) $1.34V$

D) None of these

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

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

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

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

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

• 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) ${{K}_{sp}}=S$

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

D) None of the above

• 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) ${{L}^{2}}mo{{l}^{-2}}s$

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

A) Formaldehyde

B) Acetaldehyde

C) Acetone

D) Benzaldehyde

• 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

• question_answer161) For the redox reaction $Zn(s)+C{{u}^{2+}}(0.1M)\xrightarrow{{}}Z{{n}^{2+}}(1M)+Cu(s)$ taking place in a cell, $E_{cell}^{o}$ is $1.10V.$ ${{E}_{cell}}$ for the cell will be $\left( 2.303\frac{RT}{F}=0.0591 \right)$

A) $2.14V$

B) $1.80V$

C) $0.82V$

D) $1.07V$

• 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

• 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) $\Delta {{H}_{mix}}>1$

• question_answer164) Interionic distance for $CsCl$crystal is

A) $a$

B) $a/2$

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

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

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

A) $7$

B) $14$

C) $32$

D) $230$

• question_answer166) Which of the following occurs at anode?

A) Reduction

B) Oxidation

C) Both [a] and [b]

D) None of these

• question_answer167) Parke's process is used for the extraction of

A) Iron

B) sodium

C) Silver

D) zinc

• 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

• question_answer169) The transition metals mostly are

A) Diamagnetic

B) Paramagnetic

C) Neither diamagnetic nor paramagnetic

D) Both diamagnetic and paramagnetic

• 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) $CC{{l}_{4}}$

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

A) Phenol

B) Chlorobenzene

C) Phenyl cyanide

D) Phenyl isocyanide

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

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

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

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

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

• 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) ${{K}_{w}}={{10}^{-10}}$

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

A) Acetamide

B) methane

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

D) acetic acid

• 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) $36\text{ }M$

D) $6M$

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

A) Glucose

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

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

D) $NaCl$

• 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) $AlC{{l}_{3}}$

• question_answer178) For an ionic crystal of the general formula AX 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 $0.22$

• 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

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

A) atmosphere

B) $atmospher{{e}^{2}}$

C) $atmospher{{e}^{-1}}$

D) None of these

• 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) $1$

• question_answer182) Rusting on iron needs

A) dry air

B) air and water

C) distilled water and carbon dioxide

D) oxygen and carbon dioxide

• question_answer183) First ionization potential is highest for

A) $Na$

B) $Mg$

C) $Al$

D) None of these

• question_answer184) Which compound is not a lipid?

A) Lecithin

B) Lysine

C) Cerebroside

D) Cephalin

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

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

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

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

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

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

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

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

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

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

• 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) $Rate=k{{[A]}^{2}}{{[B]}^{2}}$

• question_answer188) In the following, the element with the highest electro positivity is

A) copper

B) cesium

C) barium

D) chromium

• 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) Kolbe's reaction

C) Sabatier-Senderens reaction

D) Carbylamine reaction

• 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) ${{s}^{-1}},{{\min }^{-1}}etc.$

• 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

• 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) ${{M}_{2}}{{(N{{O}_{3}})}_{3}}$

• 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

• 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

• question_answer195) Strongest Breasted base among the following anions is

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

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

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

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

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

A) Diamond

B) Graphite

C) Silicon

D) Amorphous carbon

• 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) $Ba,Ca,Sr$

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

A) $ClF$

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

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

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

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

A) complete the circuit

B) reduce the electric resistance in Ae cell

C) separate cathode from anode

D) carry salts for the chemical reaction

• question_answer200) Reduction of methyl isocyanide gives

A) ethylamine

B) methylamine

C) dimethylamine

D) trimethylamine

• question_answer201) Polar bodies are formed during

A) oviposition

B) oogenesis

C) fertilization

D) sperm to genesis

• question_answer202) Node of Ranvier can be seen in

A) right atrium

B) dendrites

C) cell body

D) axon

A) sudden change in morphology

B) change in character

C) change in heritable characters

D) None of the above

• question_answer204) Amniocentesis is a technique used for

A) estimating amino acid content in the amino

B) measuring size of the amino

C) determining sex of the foetus

D) determining position of the foetus

• question_answer205) The science of ageing is called

A) Chronology

B) Odontology

C) Gynaecology

D) Gerontology

A) It is covered by two membranes

B) There is no blood-brain barrier

C) Largest number of cranial nerves originate form cerebral hemisphere

D) Cerebral cortex is highly developed

• question_answer207) The placenta of human beings belong to the category

A) epitheliochorial

B) syndesmochorial

C) endotheliochorial

D) haemochorial

• question_answer208) Which of the blood group does not contain any antigen ?

A) Blood group O

B) Blood group A

C) Blood group B

D) Blood group AB

• question_answer209) AIDS related complex (ARC) is a disease, which leads to fever, swollen lymph nodes, night sweats, loss in weight etc present

A) sever form of AIDS

B) initial form of AIDS

C) single stranded DNA

D) double stranded DNA

• question_answer210) External ears are characteristics of

A) mammals

B) reptiles

C) amphibians

D) pisces

• question_answer211) Pace-maker of the heart is situated

A) in wall of right atrium

B) on the inter auricular septum

C) on inter ventricular septum

D) in wall of left atrium

• question_answer212) Electric organs are found in

A) sharks

B) porpoises

C) goldfish

D) rays

• question_answer213) Acromion process is found in rabbit in

A) pectoral girdle

B) femur

C) vertebral column

D) pelvic girdle

• question_answer214) Mammalian lungs contain a large number of minute alveoli (air sacs). This is to allow

A) more space for increasing the total volume of inspired air

B) more surface area for diffusion of gases

C) more spongy texture for keeping lungs in proper shape

D) more nerve supply to keep the organs working more efficiently

• question_answer215) Name of nervous band connecting cerebral hemispheres in rabbit is

A) corpus callosum

B) corpus albicans

C) corpus striatum

D) corpus spongiosum

• question_answer216) Lateral ventricles are found in

A) brain

B) heart

C) thyroid

D) Both [a] and [b]

• question_answer217) Biological name of insect (vector) carrying the plague

A) Xenopey cheopis

B) Anopheles mosquito

C) Bacillus pestis

D) Pediculus humanus

• question_answer218) Which cell types secretes $\text{HCl}$ in stomach?

A) Chief cells

B) Oxyntic cells

C) Ppneth cells

D) Goblet cells

• question_answer219) Nissl's granules are found in

A) mast cells

B) osteoblasts

C) chondro blasts

D) neurons

• question_answer220) What for the ascending limb of loop of Henie is permeable?

A) Glucose

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

C) Na

D) Water

• question_answer221) Parathormone deficiency in man causes

A) hypercalcemia

B) hypocalcemia

C) goiter

D) All of these

• question_answer222) The eggs of placental mammals are described as

A) microlecithal

B) telolecithal

C) centrolecithal

D) alecithal

• question_answer223) If a haemophilic man marries a normal lady, the of fsprings will be

A) all haemophilic

B) all normal

C) haemophilic daughters

D) haemophilic sons

• question_answer224) "Origin of life' was written by

A) $\text{S}\,\,\text{I}$ Miller

B) $\text{A}\,\,\text{I}$ Oparin

C) de Vries

D) Charles Darwin

• question_answer225) Improvement of human race by improving the environment is called

A) Euphenics

B) Eugenics

C) Euthenics

D) Ecology

• question_answer226) The carrier of virus causing human yellow fever is

A) mosquito

B) bug

C) louse

D) beetle

A) pace-maker

B) cardiac muscles

C) left atrium

D) right ventricle

• question_answer228) Smoking addiction is harmful because it produces polycyclic aromatic hydrocarbons which cause

A) reduction in oxygen transport

B) increase in blood pressure

C) cancer

D) retardation of growth of foetus

• question_answer229) Main function of cerebellum is

A) balancing

B) to see

C) to hear

D) remembering

• question_answer230) The centre for sense of smell in brain is

A) cerebellum

B) cerebrum

C) olfactory lobes

D) midbrain

• question_answer231) The nerve related with diaphragm is

A) vagus

B) phrenic

C) trigeminal

D) glossopharyngeal

• question_answer232) The disease caused by deficiency of parathormone is

A) cretinism

B) tetany

C) hypercalcemia

D) myxedema

• question_answer233) In human females at the time of birth there are two million ova; how many of them normally reach maturity in the course of normal reproductive life?

A) 500

B) 1,000

C) 2,000

D) 5,000

• question_answer234) Which of the following -belongs to phylum Arthropoda ?

A) Starfish

B) Goldfish

C) Silver fish

D) Cuttlefish

• question_answer235) During replication of a bacterial chromosome DNA synthesis starts from a replication origin site and

A) RNA primers are involved

B) is facilitated by telomerase

C) moves in one direction of the site

D) moves in bi-directional way

• question_answer236) Ear drum is known as

A) tympanic membrane

B) tensor tympani

C) scala tympani

D) scala vestibule

A) fly

B) worm

C) moth

D) beetle

• question_answer238) A normal woman, whose father was colourblind is married to a normal man. The sons would be

A) 75% colourblind

B) 50% colourblind

C) all normal

D) All colourblind

• question_answer239) In contrast to annelids the platyhelminths show

B) presence of pseudocoel

C) bilateral symmetry

D) absence of body cavity

• question_answer240) Which of the following unicellular organism has a macronucleus for trophic function and one or more micronuclei for reproduction?

A) Euglena

B) Amoeba

C) Paramecium

D) Trypanosoma

• question_answer241) In human, muscular coordination is controlled by

A) bone marrow

B) medula oblongata

C) cerebellum

D) cerebrum

• question_answer242) Increase in human race by using rules of Genetics is known as

A) Eugenics

B) Euphenics

C) Euthenics

D) Dysgenics

• question_answer243) What kind of evidence suggested that man is more closely related with chimpanzee than with other Hominoid apes?

A) Evidence from DNA from sex chromosomes only

B) Comparison of chromosomes morphologically only

C) Evidence from fossil remains and the fossil mitochondrial DNA alone

D) Evidence from DNA extracted from sex chromosomes, autosomes and mitochondria

• question_answer244) Presence of gills in the tadpole of frog indicates that

A) fishes were amphibious in the past

B) fishes evolved from frog-like ancestors

C) frogs will have gills in future

D) frogs evolved from gilled ancestors

• question_answer245) Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution?

A) Development of transgenic animals

B) Production of 'Dolly* the sheep by cloning

C) Prevalence of pesticide resistant insects

D) Development of organs from stem cells for organ transplantation

• question_answer246) de Vries gave his mutation theory on organic evolution, while working on

A) Althea rosea

B) Drosophila melanogaster

C) Oenothera lamarckiana

D) Pisum sativum

• question_answer247) There are two opposing views about origin of modem man. According to one view. Homo erectus in Asia were the ancestors of Modern man. A study of variations of DNA however suggested African origin of Modern man. What kind of observation on DNA variation could suggest this?

A) Greater variation in Africa than in Asia

B) Variation only in Asia and no variation in Africa

C) Greater variation in Asia than in Africa

D) Similar variation in Africa and Asia

• question_answer248) Mast cells of connective tissue contain

A) vasopressin and relaxin

B) heparin and histamine

C) heparin and calcitonin

D) serotonin and melanin

• question_answer249) In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed would drive

A) into the cell

B) and out of the cell

C) into the cell

D) out of the cell

• question_answer250) Which of the following substances, if introduce the blood stream, would cause coagulation at the site of its introduction?

A) Fibrinogen

B) Prothrombin

C) Heparin

D) Thromboplastin

• question_answer251) Duodenum has characteristic Brunner's glands, which secrete two hormones called

A) kinase, estrogen

B) secretin, cholecystokinin

C) prolactin, parathormone

• question_answer252) Which one of the following is the correct matching of a vitamin, its nature and ist deficiency disease?

A) Vitamin-A-Fat soluble-Nightblindness

B) Vitamin-K-Fat-soluble-Beri-beri

C) Vitamin-A-Fat-soluble-Beri-beri

D) Vitamin-K-Water-soluble-pellagra

• question_answer253) The richest sources of vitaminare

A) goat's liver and Spirulina

B) chocolate and green gram

C) rice and hen's egg

D) carrot and chicken's breast

• question_answer254) Epithelial cells of the intestine involved in food absorption have on their surface

A) pinocytic vesicles

B) phagocytic vesicles

C) zymogen granules

D) microvilli

• question_answer255) A patient is generally advised to specially. consume more meat, lentils, milk and eggs in diet only when he suffers from

A) kwashiorkor

B) rickets

C) anaemia

D) scurvy

• question_answer256) A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of

A) fats

B) ketones

C) amino acids

D) glucose

• question_answer257) Which group of three of the following five statements (1-5) contains all three correct statements regarding beri-beri? 1. A crippling disease prevalent among the native population of sub-Sahara Africa. 2. A deficiency disease caused by lack of thiamine (vitamin-Bi). 3. A nutritional disorder in infants and young children when the diet is persistently deficient in essential protein. 4. Occurs in those countries where the staple diet is polished rice. 5. The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure.

A) 1,2 and 4

B) 2, 3 and 5

C) 1,3 and 5

D) 2, 4 and S

• question_answer258) When concentration in blood increases, breathing becomes

A) shallower and slow

B) there is no effect on breathing

C) slow and deep

D) faster and deeper

• question_answer259) Blood analysis of a patient reveals an unusually high quantity of car boxy hemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing unusually high content of

A) carbon disulphide

B) chloroform

C) carbon dioxide

D) carbon monoxide

• question_answer260) During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed?

A) Conversion of pyruvic add to acetyl Co-A

B) Electron transport chain

C) Glycolysis

D) Krebs' cycle

• question_answer261) to the ABO system of blood groups, if both antigens are present but no antibody, the blood group of the individual would be

A) B

B) 0

C) AB

D) A

• question_answer262) You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes. Which of them will you not use for the purpose?

A) Test tube containing calcium bicarbonate

B) Chilled test tube

C) Test tube containing heparin

D) Test tube containing sodium oxalate

• question_answer263) The cardiac pace-maker in a patient fails to function normally. The doctors find that an artificial pace-maker is to be grafted in him. It is likely that it will be grafted at the site of

A) atrioventricular bundle

B) Purkinje system

C) sinuatrial node

D) atrioventricular node

• question_answer264) Uricotelism is found in

A) mammals and birds

B) fishes and fresh water protozoans

C) birds, reptiles and insects

• question_answer265) A terrestrial animal must be able to

A) excrete large amount of water in urine

B) conserve water

C) actively pump salts out through the skin

D) excrete large amount of salts in urine

• question_answer266) In ornithine cycle, which of the following wastes are removed from the blood?

A) Urea and urine

B) Ammonia and urea

C) and ammonia

D) and urea

• question_answer267) The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is

A) 20mmHg

B) 75 mm Hg

C) 30mmHg

D) 50 mm Hg

• question_answer268) ATP ase enzyme needed for muscle contraction is located in

A) acrinin

B) troponin

C) myosin

D) actin

• question_answer269) An acromian process is characteristically found in the

A) pelvic girdle of mammals

B) skull of frog

C) pectoral girdle of mammals

D) sperm of mammals

• question_answer270) Which of the following pairs is correctly matched?

A) Cartilaginous - Skull bones joint

B) Hinge joint - Between vertebrae

C) Fibrous joint - Between phalanges

D) Gliding joint - Between zygapophyses of the successive vertebrae

• question_answer271) Injury to vagus nerve in humans is not likely to affect

A) tongue movements

B) gastrointestinal movements

C) pancreatic secretion

D) cardiac movements

• question_answer272) In a man, abducens nerve is injured. Which one of the following functions will be affected?

A) Movement of the eye ball

B) Swallowing

C) Movement of the tongue

D) Movement of the neck

• question_answer273) One of the examples of the action of the autonomous nervous system is

A) knee-jerk response

B) pupillary reflex

C) swallowing of food

D) peristalsis of the intestine

• question_answer274) Parkinson's disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement, control and make use of neurotransmitter

A) acetylcholine

B) nor-epinephrine

C) dopamine

D) GABA

A) biogenic amines only

B) proteins, steroids and biogenic amines

C) proteins only

D) steroids only

• question_answer276) Which one of the following pairs correctly matches a hormone with a diseases resulting from its deficiency?

A) Luteinizing - Failure of ovulation hormone

B) Insulin - Diabetes insipidus

C) Thyroxine - Tetany

D) Parathyroid - Diabetes mellitus hormone

• question_answer277) Which of the following hormones is not a secretion product of human placenta?

B) Prolactin

C) Estrogen

D) Progesterone

• question_answer278) Which one of the following hormones is a modified amino acid?

A) Epinephrine

B) Progesterone

C) Prostaglandin

D) Estrogen

• question_answer279) Ovulation in the human female normally takes place during the menstrual cycle

A) at the mid secretory phase

B) just before the end of the secretory phase

C) at the beginning of the proliferative phase

D) at the end of the proliferative phase

• question_answer280) If mammalian ovum fails to get fertilized, which one of the following is unlikely?

A) Corpus luteum will disintegrate

B) Estrogen secretion further decreases

C) Primary follicle starts developing

D) Progesterone secretion rapidly declines

• question_answer281) Grey crescent is the area

A) at the point of entry of sperm into ovum

B) just opposite to the site of entry of sperm into ovum

C) at the animal pole

D) at the vegetal pole

• question_answer282) The maximum growth rate occurs in

A) stationary phase

B) senescent phase

C) lag phase

D) exponential phase

• question_answer283) In a mutational event, when adenine is replaced by guanine, it is a case of

A) frameshift mutation

B) transcription

C) transition

D) transversion

• question_answer284) DNA fingerprinting refers to

A) molecular analysis of profiles of DNA samples

B) analysis of DNA samples using imprinting devices

C) techniques used for molecular analysis of different specimens of DNA

D) techniques used for identification of fingerprints of individuals

• question_answer285) Lack of independent assortment of two genes A and B in fruit fly Drosophila is due to

A) repulsion

B) recombination

D) crossing over

• question_answer286) During transcription, if the nucleotide sequence of the DNA strand that is being coded as ATACG. Then the nucleotide sequence in the mRNA would be

A) TATGC

B) TCTGG

C) UAUGC

D) UATGC

• question_answer287) Extra nuclear inheritance is a consequence of presence of genes in

A) mitochondria and chloroplasts

B) endoplasmic reticulum and mitochondria

C) ribosomes and chloroplast

D) lysosomes and ribosomes

• question_answer288) A man and a woman, who do not show any apparent signs of a certain inherited disease have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease but none of the daughters are affected. Which of the following mode of inheritance do you suggest for this disease?

A) Autosomal dominant

C) Sex-limited recessive

• question_answer289) Telomerase is an enzyme, which is a

A) repetitive DNA

B) RNA

C) simple protein

D) rib nucleoprotein

• question_answer290) During transcription holoenzyme RNA polymerase binds to a DNA sequence and the DNA assumes a saddle like structure at that point. What is that sequence called?

A) CAAT box

B) GGTT box

C) AAAT box

D) TATA box

• question_answer291) Minerals deposition in bones and teeth is due to vitamin

A) D

B) A

C) C

D) E

• question_answer292) BHC and DDT belong to which class of pesticides?

A) Organophosphates

B) Organochlorines

C) Carbonates

D) Triazines

• question_answer293) Production of a human protein in bacteria by genetic engineering is possible because

A) bacterial cell can carry out the RNA splicing reactions

B) the human chromosome can replicate in bacterial cell

C) the mechanism of gene regulation is identicp.1 in humans and bacteria

D) the genetic code is universal

• question_answer294) From the following statements select the wrong one

A) millepedes have two pairs of appendages in each segment of the body

B) prawn has two pairs of antennae

C) animals belonging to phylum-Porifera are exclusively marine

D) nematocysts are characteristic of the phylum-Cnidaria

A) grow slowly in highly alkaline frozen lakes at high altitudes

B) occur in water containing high concentrations of barium hydroxide

C) grow and multiply in very deep marine sediments

D) readily grown and divides in sea water enriched in any soluble salt of barium

• question_answer296) Cancer cells are more easily damaged by radiation than normal cells because they are

A) starved of mutation

B) undergoing rapid division

C) different in structure

D) non-dividing

• question_answer297) Which of the following in not true for a species?

A) Members of a species can interbreed

B) Variations occur among members of a species

C) Each species is reproductively isolated from every other species

D) Gene flow does not occur between the populations of a species

• question_answer298) Biodiversity act of India was passed by the Parliament in the year

A) 1996

B) 1992

C) 2002

D) 2000

• question_answer299) Which one of the following characters is not typical of the class-Mammalia?

A) Seven cervical vertebrae

B) The codont dentition

C) Ten pairs of cranial nerves

D) Alveolar lungs

A) gastric glands

B) sebaceous glands

C) thyroid glands

D) thymus glands

• question_answer301) Fruit of coconut is

A) drupe

B) berry

C) nut

D) None of these

• question_answer302) Edible part of mango is

A) epicarp

B) endocarp

C) mesocarp

D) None of the above

• question_answer303) System of classification proposed by Linnaeus

A) botanical system of classification

B) sexual system of classification

C) natural system of classification

D) None of the above

• question_answer304) Highest unit of classification

A) phylum

B) kingdom

C) class

D) series

• question_answer305) Angiosperms differs from gymnosperms because

A) embryo is present in it

B) tissue is present in it

C) vessel is present in its xylem

D) None of the above

A) yeast

B) Mucor

C) bacteria

D) virus

• question_answer307) Which one of the following organisms may respire in the absence of oxygen?

A) Azotobacter

B) Clostridium

C) Rhizobium

A) parasitic relation between fungus and algae

B) symbiotic relation between fungus and algae

C) symbiotic relation between fungus and roots

D) parasitic relation between fungus and roots

• question_answer309) Earliest settlers on barren land and rocks are

A) mosses

B) lichens

C) ferns

D) None of these

• question_answer310) Number of neck canal cells is archegonium of Funaria

A) 1

B) 3

C) 5

D) 6-10

• question_answer311) Nostoc is known to perform

A) only photosynthesis

B) photosynthesis and nitrogen fix am simultaneously

C) only nitrogen fixation

D) either photosynthesis or nitrogen fixatior a time

• question_answer312) In Funaria, haploid structure is

A) capsule

B) protonema

C) collumella

D) None of these

• question_answer313) Terpentine is obtained from

A) pteridophyte

B) gymnosperm wood

C) bacteria

D) angiosperm flower

• question_answer314) Tunica corpus theory was proposed by

A) Schmidt

B) Hanstein

C) Nageli

D) Hoffmeister

• question_answer315) Companion cells are associated with

A) sieve tubes

B) xylem

C) collenchyma

D) cambium

• question_answer316) Wood is the common name of

A) phloem

B) vascular bundles

C) cambium

D) secondary xylem

• question_answer317) Embryo is found in

A) Ulothrix

B) Spirogyra

C) Funaria

D) Chlorella

• question_answer318) Hydathode are found in

A) leaf

B) stem

C) flower

D) root

A) vitamins

B) fat

C) protein

D) carbon

• question_answer320) Which of the following is a C4-plant

A) sugarcane

B) mango

C) apple

D) tomato

• question_answer321) The first compound formed in photosynthesis of C3 plants is

A) phosphoglyceric acid

B) starch

C) pyruvic acid

D) ribulose diphosphate

• question_answer322) Ferredoxin is found in

A) $\text{PS-I}$

B) $\text{PS-II}$

C) Hill reaction

D) ${{\text{P}}_{680}}$

• question_answer323) Correct percentage of $C{{O}_{2}}$ in atmosphere is

A) 0.03%

B) 0.3%

C) 1%

D) 1.1%

A) fibres taken out from stem

B) epidermal hair of seed

C) epidermal hair of fruits

D) fibres taken out from roots

• question_answer325) Which of the following is a test cross?

A) $Tt\times Tt$

B) $TT\times Tt$

C) $TT\times tt$

D) $tt\times Tt$

• question_answer326) Gibberellins were first discovered in fungal genus

A) Mucor

B) Khizopus

C) Agaricus

D) Fusarium

• question_answer327) Stem of Opuntia is

A) phyllode

D) bulbils

• question_answer328) Which of the following is a biofertilizer?

A) Funaria

B) Fern

C) Anabaena

D) Fungus

• question_answer329) RQ of succulents is

A) 1

B) 4

C) 0

D) $\infty$

A) potassium meta-bisulphite

B) potassium permanganate

C) potassium chloride

D) potassium chlorate

• question_answer331) The drug to control high blood pressure is obtained from

A) Rauwolfia serpentine

C) Colchicum autumnale

D) Digitalis purpurea

• question_answer332) The botanical name of 'jute' is

A) Linum eusitaissimum

B) Corchorus capsularis

C) Hibiscus sabdariffa

D) Crotalaria juncea

• question_answer333) The genetic material in viruses are

A) in some viruses both DNA and RNA

B) only RNA

C) only DNA

D) Both [b] and [c]

• question_answer334) Food poisoning is caused by the infection of

A) Bacillus megatherium

B) Salmonella typhi

C) E. coli

D) Clostridium botulinum

• question_answer335) Cyanobacteria are included in

A) Monera

B) Protista

C) Migae

D) Bryophyta

• question_answer336) Isotopes used in photosynthesis are

A) ${{\text{C}}_{\text{11}}}\text{and }{{\text{P}}^{\text{32}}}$

B) ${{\text{C}}^{\text{15}}}\text{and }{{\text{P}}^{\text{32}}}$

C) ${{\text{C}}^{\text{16}}}\text{and }{{\text{N}}^{\text{15}}}$

D) ${{\text{C}}^{\text{14}}}\text{and}\,{{\text{O}}^{\text{18}}}$

• question_answer337) Mendel observed that certain characters did assort independently. Later researchers found it to be due to

A) amitosis

C) dominance of one trait over the other

D) crossing-over

• question_answer338) Fertility of soil reduces from

A) crop rotation

B) intensive cultivation

C) mixed cropping

D) nitrogen fixing bacteria

• question_answer339) Stomata can open at night also in

A) xerophyte

B) gametophyte

C) hydrophyte

D) None of these

• question_answer340) Stomata open during day because the guard cells have

A) outer walls thin

B) kidney shape

C) chlorophyll

D) large nuclei

• question_answer341) ${{\text{P}}_{\text{680}}}$ is related with

A) $\text{PS-I}$

B) $\text{PS-II}$

C) Hill reaction

D) None of these

• question_answer342) Organisms without any specific shape are

A) mycoplasma

B) bacteria

C) viruses

D) cyanobacteria

• question_answer343) In an aquatic environment, microscopic animals and plants are collectively known as

A) commensals

B) herbivores

C) fauna and flora

D) planktons

• question_answer344) Cell theory was proposed by

A) Schleiden and Schwann

B) Watson and Crick

C) Darwin and Wallace

D) Mendel and Morgan

• question_answer345) The tobacco mosaic virus was crystallized for the first time by

A) W M Stanley

B) Louis Pasteur

C) Edward Jenner

D) Andre Lwoff

• question_answer346) The main function of Golgi complex is

A) translocation

B) phosphorylation

C) glyco-oxidation

D) fermentation

A) World Environment Day

B) World AIDS Day

C) World Women Day

D) World Polio Day

• question_answer348) Four daugher cells formed after meiosis are

A) genetically similar

B) genetically different

C) anucleate

D) multinucleate

• question_answer349) Which one of the following nutrients serve as microelements for plant growth?

A) Manganese, copper, calcium

B) Sodium, potassium, boron

C) Sodium, nickel, chlorine

D) Copper, molybdenum, zinc

• question_answer350) Mo is related with

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

B) flower induction

C) chromosome contraction

D) carbon collection

• question_answer351) Which one of the following elements is present in chlorophylls?

A) Manganese

B) Magnesium

C) Copper

D) Iron

A) monosaccharide

B) disaccharide

C) polysaccharide

D) None of these

• question_answer353) Pulses yielding main family of plants

A) Poaceae (Gramineae)

B) Cucurbitaceae

C) Liliaceae

D) Papilionaceae

• question_answer354) Constituents of plasma membrane are

A) Protein-lipid-protein

B) Lipid-protein-lipid

C) Protein-phosphorus

D) Lipid-sugar-protein

A) parasitic relation between fungus and algae

B) symbiotic relation between fungus and algae

C) parasitic relation between fungus and root

D) symbiotic relation between fungus and roots

• question_answer356) NADP is reduced into $NADP{{H}_{2}}$in

A) $\text{PS-I}$

B) $\text{PS-II}$

C) Calvin cycle

D) Non-cyclic phosphorylation

• question_answer357) Hill's reaction is completed in

A) light

B) dark

C) Both [a] and [b]

D) None of these

A) producer, consumer, decomposer

B) decomposer, consumer, producer

C) producer, decomposer, consumer

D) consumer, producer, decomposer

• question_answer359) The cycling of elements in an ecosystem is called

A) chemical cycle

B) biogeochemical cycle

C) geological cycle

D) geochemical cycle

• question_answer360) Transcription of DNA is aided by

A) RNA polymerase

B) DNA polymerase

C) exonuclease

D) recombinase

• question_answer361) In which of the following protonema stage is found ?

A) Riccia

B) Funaria

C) Selaginella

D) Pinus

• question_answer362) When a seed germinates, while fruit is still attached to plant

A) vivipary

B) scarification

C) germination

D) None of these

• question_answer363) Emasculation is only achieved by

A) removal of stigma

B) removal of sepals and petals

C) removal of anthers

D) removal of gynoecium

• question_answer364) If the base sequence in DNA is 5' AAAA 3' thee the base sequence in mRNA will be

A) 5'UUUU3'

B) 3'UUUU 5'

C) 5'AAAA 3'

D) 3TTTT 5'

• question_answer365) Which of the following is a stop codon

A) AUG. GUG, UUU

B) UGA, UAG, UAA

C) UUU, UAC, CUC

D) CUC, UAC, UAA

• question_answer366) Which of the following is a viral STD disease ?

A) AIDS

B) Cholera

C) Syphilis

D) Gonnorhoea

• question_answer367) Correct order of molecular weight is

A) DNA < rRNA < tRNA

B) DNA < mRNA < rRNA

C) rRNA < mRNA < DNA

D) tRNA < DNA < mRNA

• question_answer368) Which of the following is found in fem?

A) Eustele

B) Atactostele

C) Dictyostele

D) None of these

• question_answer369) Characteristics of Cyanophyieae is

A) phycocyanin

B) chlorophyll-$b$

C) phycoerythrin

D) chlorophyll-$a$

• question_answer370) Which is closet to fungi in Protista?

A) Hypophyte

B) True slime would

C) Actinomycetes

D) Ascomycetes

• question_answer371) Pith and cortex belong to

A) epidermis

B) ground tissue

C) vascular tissue

D) bundle sheath

• question_answer372) Velamen of orchids are formed from

A) phelloderm

B) phellogen

C) dermatogen

D) cortex

• question_answer373) Total yield in one Krebs' cycle

A) $3\text{ }FAD{{H}_{2,}}~2\text{ }NAD{{H}_{2,}}1\text{ }ATP$

B) $2\text{ }FAD{{H}_{2,}}~2\text{ }NA{{D}_{2,}}~~~2\text{ }ATP$

C) $2\text{ }NAD{{H}_{2,}}~1\text{ }FAD{{H}_{2,}}2\text{ }ATP$

D) $3\text{ }NAD{{H}_{2,}}~1\text{ }FAD{{H}_{2,}}1\text{ }ATP$

• question_answer374) Edaphic factor is related with

A) soil

B) water

C) air

D) None of these

• question_answer375) The type of inflorescence in Tulsi

A) cyathium

B) hypanthodium

C) verticellaster

D) None of these

• question_answer376) The pyramid of energy in a forest ecosystem is

A) always upright

B) always inverted

C) Both [a] and [b]

D) None of the above

• question_answer377) The sites for protein synthesis in plants are

A) chloroplasts

B) ribosomes

C) pyrenoids

D) mitochondria

• question_answer378) Castor oil is yielded from which of the following?

A) Brassica campestris

B) Sesamum indicum

C) Ricinus communis

D) Cocos nucifera

• question_answer379) The process involved in the RNA formation on the DNA template is

A) translation

B) transduction

C) transcription

D) transformation

• question_answer380) The genes are responsible for growth and differentiation in an organism through regulation of

A) translocation

B) transformation

C) transduction and translation

D) translation and transcription

• question_answer381) DNA is present in

A) nucleus only

B) mitochondrion only

C) chloroplast only

D) All of these

• question_answer382) Nitrifying bacteria are those which can convert

A) atmospheric nitrogen into ammonia

B) ammonia into nitrites

C) nitrites into nitrates

D) nitrates into ammonia

• question_answer383) Which one of the following bacteria has potential for nitrogen fixation?

A) Nitrosomonas

B) Nitrobacter

C) Nitrosococcus

D) Rhizobium

• question_answer384) The importance of ecosystem lies in

A) flow of energy

B) cycling of materials

C) Both [a] and [b]

D) None of the above

• question_answer385) Which one of the following is a renewable source of energy?

A) Petroleum

B) Coal

C) Nuclear fuel

D) Trees

• question_answer386) The number of primary producers within a specified area would be maximum in

A) grassland ecosystem

B) forest ecosystem

C) pond ecosystem

D) deserts

A) primary producer

B) consumer

C) Both [a] and [b]

D) None of the above

• question_answer388) The smallest organisms, which cause disease among plants are

A) viruses

B) fungi

C) mycoplasma

D) bacteria

• question_answer389) How many ATP will be produced during the production of 1 molecule of acetyl Co-A from 1 molecule of pyruvic acid?

A) 3 ATP

B) 5 ATP

C) 8 ATP

D) 38 ATP

• question_answer390) End osulphon is a

A) herbicide

B) weedicide

C) rodenticide

D) pesticide

• question_answer391) In which kind of study is banding done?

A) Creation of new species

B) Production of disease resistent variety

C) Mapping of chromosomes

D) Artificial pollination

• question_answer392) Nobel Prize for the concept of jumping genes was awarded to

A) H G Khorana

B) Barbara McClintock

C) Kornberg

D) Watson

• question_answer393) Phytochrome was discovered by

A) W Went

B) Gamer and Allard

C) F F Blackman

D) R Hill

• question_answer394) Lateral meristem is responsible for which of the following

A) Growth in length

B) Growth in thickness

C) Growth in parenchyma

D) Growth in cortex

• question_answer395) The presence of auxins in a solution could be tested by

A) Avena sativa stem tip test

B) carbon tetrachloride test

C) iodine test

D) defoliation test

• question_answer396) Enzymes are sensitive to

A) cold

B) cell wall

C) heat

D) pressure

• question_answer397) A normal angiosperm embyo sac at the final stage of development has

A) 4 nuclei

B) 8 nuclei

C) 3 nuclei

D) 7 nuclei

• question_answer398) Coir of commerce is obtained from which part of the coconut?

A) Epicarp

B) Mesocarp

C) Endocarp

D) Seed coat

• question_answer399) Diphtheria is caused by

A) viruses

B) eukaryotes

C) mycoplasma

D) bacteria

• question_answer400) Reserpine drug is obtained from

A) Rauwolfia serpentine

B) Withania somnifera