# Solved papers for MGIMS ­ WARDHA MGIMS WARDHA Solved Paper-2014

### done MGIMS WARDHA Solved Paper-2014

• question_answer1) Two particles A and B of masses m and 2m have charges$q$and$2q$respectively. Both particles moving with velocities${{\upsilon }_{1}}$and${{\upsilon }_{2}}$ respectively in the same direction and enter the same magnetic field B acting normally to their direction of motion. If the two forces${{F}_{A}}$and${{F}_{B}}$acting on them are in the ratio of$1:2,$ the ratio of their velocities is

A) $2:1$

B) $3:2$

C) $2:3$

D) $1:1$

• question_answer2) A narrow beam of protons and deuterons, each having the same momentum, enters a region of uniform magnetic field directed perpendicular to their direction of momentum. The ratio of the radii of the circular paths described by them is

A) $2:5$

B) $3:2$

C) $2:3$

D) $1:1$

• question_answer3) A horizontal overhead power line carries a current of, 90 A in east to west direction. The magnitude and direction of the magnetic field due to the current 1.5m below the line is

A) $2.5\times {{10}^{-5}}T$towards north

B) $3\times {{10}^{-5}}T$ towards east

C) $1.2\times {{10}^{-5}}T$towards south

D) $1\times {{10}^{-5}}T$ towards west

• question_answer4) A galvanometer has a resistance of$30\,\Omega$. It gives full scale deflection with a current of 2mA. Calculate, the value of the resistance needed to convert it into an ammeter of range 0-0.3 A. The value of the resistance needed to convert galvanometer into ammeter

A) $0.2\,\,\Omega$

B) $0.3\,\,\Omega$

C) $0.4\,\,\Omega$

D) $0.52\,\,\Omega$

• question_answer5) A tank is filled with water to a height of 12.4 cm. The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.3 cm. If water is replaced by a liquid of refractive index 1.6 upto the same height, by what distance would the microscope have to be moved to focus on the needle again

A) 4cm

B) 3cm

C) 2.18 cm

D) 2.05 cm

E) None of these above

• question_answer6) A ray of light falls on a transparent, right-angled isosceles prism made from a glass of refractive index$\sqrt{2}$. The incident ray falls normally on one of the equal sides of this prism. The ray will suffer

A) total internal reflection

B) Interference

C) refraction with angle of refraction$90{}^\circ$

D) None of the above

• question_answer7) The magnifying power of a telescope in its normal adjustment is 20. If the length of the telescope is 105 cm in this adjustment, the focal length of the objective lens is

A) 100cm

B) 5cm

C) 80cm

D) 95cm

• question_answer8) Two convex lenses of same focal lengths but of aperture${{A}_{1}}$and${{A}_{2}}$$({{A}_{2}}<{{A}_{1}}),$are used as the objective lenses in two astronomical telescopes having identical eye-pieces. The ratio of their resolving powers is

A) $\frac{{{A}_{1}}}{{{A}_{2}}}$

B) $1:1$

C) $\frac{{{A}_{2}}}{{{A}_{1}}}$

D) data insufficient

• question_answer9) A beam of light converges at a point P. A concave lens of focal length 16 cm is placed in the path of this beam 12 cm from P. The location of the point, from the lens, at which the beam would now converge is

A) 48 cm

B) 45 cm

C) 80 cm

D) 90 cm

• question_answer10) A nucleus undergoes $\beta -$decay. The mass number and atomic number change as

A) mass number and atomic number both increases

B) mass number remain same and atomic number increases

C) mass number increases and atomic number remain same

D) mass number and atomic number both decreases

• question_answer11) The graph given below showing the variation of stopping potential with the frequency of incident radiation for two different photosensitive materials having work functions ${{W}_{1}}$and ${{W}_{2}}({{W}_{1}}<{{W}_{2}})$ The slope of graph showing the variation of stopping potential with the frequency of incident radiation gives the value of

A) h/e where, h is Plancks constant and e electronic charge

B) h i.e., Plancks constant

C) e i.e., electronic charge

D) None of the above

• question_answer12) Rain drops are spherical in shape, because of

A) surface tension

B) capillarity

C) downward motion

D) acceleration due to gravity

• question_answer13) In Youngs double slit experiment, monochromatic light of wavelength 600 nm illuminates the pair of slits and produces an interference pattern in which two consecutive bright fringes are separated by 10 mm. Another source of monochromatic light produces the interference pattern in which of the two consecutive bright fringes are separated by 8 mm. The wavelength of light from the second source is

A) 448 nm

B) 450 nm

C) 480 nm

D) 580 nm

• question_answer14) Light passes through two polaroids${{P}_{1}}$and ${{P}_{2}}$ with pass axis of ${{P}_{2}}$making an angle 6 with the pass axis of ${{P}_{1}}$. That value of 9 for which the intensity of emergent light is zero.

A) $45{}^\circ$

B) $90{}^\circ$

C) $30{}^\circ$

D) $60{}^\circ$

• question_answer15) If the angle between the axis of polarizer and the analyser is 45 degree, the ratio of the intensities of original light and the transmitted light after passing through the analyser is

A) $2:1$

B) $1:2$

C) $2:3$

D) $1:1$

• question_answer16) The given circuit diagram shows a series L-C-R circuit connected to a variable frequency 230 V, source: $L=5.0\text{ }H,\text{ }C=80\text{ }\mu F,\text{ }R=40\,\Omega$ The frequency and impedance of the circuit at the resonating frequency are

• question_answer17) The instantaneous current and voltage of an AC circuit are given by $I=10sin\text{ }300t\text{ }A\text{ }and\text{ }V=200\text{ }sin\text{ }300t\text{ }V$. The power dissipation in the circuit is

A) 500 W

B) 2000 W

C) 1000W

D) 100W

• question_answer18) In a series L-C-R circuit, the voltages across an inductor, a capacitor and a resistor are 30V, 30V and 60 V respectively. The phase difference between the applied voltage and the current in the circuit is

A) $0{}^\circ$

B) $90{}^\circ$

C) $30{}^\circ$

D) $60{}^\circ$

• question_answer19) An AC source, of voltage$V={{V}_{m}}\sin \omega t,$is applied across a series RC circuit in which the capacitive impedance is a times the resistance in the circuit. The value of the power factor of the circuit is

A) $0$

B) $1/\sqrt{1+{{a}^{2}}}$

C) $\sqrt{1+{{a}^{2}}}$

D) None of these

• question_answer20) Current in a circuit falls steadily from 2.0 A to 0.0 A in 10 ms. If an average emf of 200 V is induced, then the self-inductance of the circuit is

A) 1 H

B) 2H

C) 1/2H

D) 2H

• question_answer21) Volume versus temperature graphs for a given mass of an ideal gas are shown in figure. At two different values of constant pressure. What can be inferred about relation between${{p}_{1}}$and ${{P}_{2}}$?

A) ${{p}_{1}}>{{p}_{2}}$

B) ${{p}_{1}}={{p}_{2}}$

C) ${{p}_{1}}<{{p}_{2}}$

D) data is insufficient

• question_answer22) A rectangular coil of area A, having number of turns Nis rotated at/revolutions per second in a uniform magnetic field B. The maximum emf induced in the coil is

A) $2\pi fNB$

B) $2fNBA$

C) $2\pi fBA$

D) $2\pi fNBA$

• question_answer23) The polarity of the capacitor in the situation described by Fig.

A) Plate A and plate B both positive

B) Plate A negative and plate B positive

C) Plate A positive and plate B negative

D) Plate A and plate B both negative

• question_answer24) A step down transformer operated on a 2.5 kV line. It supplies a load with 20 A. The ratio of the primary winding to the secondary is$10:1$. If the transformer is 90% efficient, the power output is

A) $4.5\times {{10}^{4}}W$

B) $4.5\times {{10}^{2}}W$

C) $6\times {{10}^{4}}W$

D) $6\times {{10}^{4}}W$

• question_answer25) A step down transformer operated on a 2.5 kV line. It supplies a load with 20 A. The ratio of the primary winding to the secondary is$10:1$. If the transformer is 90% efficient, the voltage in the secondary is

A) 225V

B) 550V

C) 250V

D) 200V

• question_answer26) When a given coil is connected to a 200V, 50 Hz AC source, 1 A current flows in the circuit. The inductive reactance of the coil used is

A) $50\sqrt{3}\Omega$

B) $200\sqrt{3}\Omega$

C) $150\sqrt{3}\Omega$

D) $100\sqrt{3}\Omega$

• question_answer27) When a given coil of ohmic resistance$100\,\Omega$and inductive reactance$100\sqrt{3}\,\Omega$is connected to a 200 V DC source, the current flows in the circuit is

A) 1A

B) 1.5 A

C) 2A

D) $100\sqrt{3}\,\Omega$

• question_answer28) If the position of a moving particle, with respect to time be, $x(t)=1+t-{{t}^{2}}$. then, the acceleration of particle is given by (assume all measurements in MKS)

A) $-1\text{ }m{{s}^{-2}}$

B) $-1.5\text{ }m{{s}^{-2}}$

C) $-2\text{ }m{{s}^{-2}}$

D) $-2.5\text{ }m{{s}^{-2}}$

• question_answer29) A ball is dropped from a tower of height h. The duration$({{t}_{0}})$of motion, when it reaches bottom of the tower is given by

A) $\sqrt{\frac{2h}{g}}$

B) $\sqrt{\frac{h}{g}}$

C) $2\sqrt{\frac{h}{g}}$

D) $4\sqrt{\frac{h}{g}}$

• question_answer30) For the given position-time$(x-t)$graph , the interval in which velocity is zero, is

A) $({{t}_{3}}-{{t}_{1}})$

B) $({{t}_{3}}-{{t}_{2}})$

C) $({{t}_{5}}-{{t}_{4}})$

D) $({{t}_{5}}-{{t}_{2}})$

• question_answer31) A person travelling on a straight line moves with an uniform velocity${{\upsilon }_{1}}$for some time and with uniform velocity${{\upsilon }_{2}}$for the next equal interval of time. The average velocity for the entire duration is

A) $({{v}_{1}}+{{v}_{2}})$

B) $({{v}_{1}}+{{v}_{2}})/2$

C) $({{v}_{1}}+{{v}_{2}})/3$

D) $(2{{v}_{1}}+3{{v}_{2}})/3$

• question_answer32) A particle moves along the$x-$axis as $x=u(t-2s)+a{{(t-2s)}^{2}}$. The initial velocity of the particle is

A) $u-2a$

B) $u-4a$

C) $2a-u$

D) $2a-3u$

• question_answer33) The centre of mass of three particles of mass ${{m}_{1}}=1.0\,kg,{{m}_{2}}=2.0\,kg,$and${{m}_{2}}=3.0\,kg$at the comers of an equilateral triangle 1.0 m on a side, as shown in figure

A) $\left( \frac{7}{12}m,\frac{\sqrt{3}}{4}m \right)$

B) $\left( \frac{5}{12}m,\frac{\sqrt{3}}{5}m \right)$

C) $\left( \frac{5}{13}m,\frac{\sqrt{3}}{5}m \right)$

D) $\left( \frac{8}{12}m,\frac{\sqrt{3}}{5}m \right)$

• question_answer34) A system consists of two point masses M and$m(<M)$. The centre of mass of the system is

A) at the middle of m and M

B) nearer to M

C) nearer to m

D) at the position of large mass

• question_answer35) A ball is projected horizontally with a velocity of 5 m/s from the top of a building 19.6 m high. flow long will the ball take to hit the ground?

A) $\sqrt{2}s$

B) 2s

C) $\sqrt{3}s$

D) 3s

• question_answer36) A body of mass 3 kg is acted on by a force which varies as shown in the graph. The momentum acquired is given by

A) zero

B) $5\text{ }N-s$

C) $30N-s$

D) $50\text{ }N-s$

• question_answer37) Boyles law is applicable for an

B) isothermal process

C) isobaric process

D) isochoric process

• question_answer38) Two perfectly elastic particles A and B of equal masses travelling along the line joining, them with velocity 15 m/s and 20 m/s respectively collide. Their velocities after the elastic collision will be (in m/s) respectively.

A) 0 and 25

B) 5 and 20

C) 10 and 15

D) 20 and 15

• question_answer39) A bomb of mass 16 kg at rest explodes into two pieces of masses 4 kg and 12 kg. The velocity of the 12 kg mass is$4\text{ }m{{s}^{-1}}$. The kinetic energy of the other mass is

A) 192J

B) 96J

C) 144 J

D) 288J

• question_answer40) Two particles of masses m^ and 7712 in projectile motion have velocities${{\upsilon }_{1}}$and${{\upsilon }_{2}}({{\upsilon }_{1}}<{{\upsilon }_{2}})$respectively at$t=0$. They collide at time${{t}_{0}}$Their velocities become$\overline{\upsilon }{{}_{1}}$and$\overline{\upsilon }{{}_{2}}$at time$2{{t}_{0}}$while still moving in it. The value of $|({{m}_{1}}\overline{\upsilon }+{{m}_{2}}\overline{\upsilon }{{}_{2}})-({{m}_{1}}{{\overline{\upsilon }}_{1}}+{{m}_{2}}{{\overline{\upsilon }}_{2}})|$is

A) zero

B) $({{m}_{1}}+{{m}_{2}})g{{t}_{0}}$

C) $2({{m}_{1}}+{{m}_{2}})g{{t}_{0}}$

D) $\frac{1}{2}({{m}_{1}}+{{m}_{2}})g{{t}_{0}}$

• question_answer41) If the equation for the displacement of a particle moving on a circular path is given by $\theta =2{{t}^{3}}+0.5,$where$\theta$is in radian and t in second, then the angular velocity of the particle after 2 s from its start is

• question_answer42) A block of mass m is placed on a smooth inclined plane of inclination with the horizontal. The force exerted by the plane on the block has a magnitude

A) $mg$

B) $mg/cos\theta$

C) $mg\text{ }cos\text{ }\theta$

D) $mg\tan \theta$

• question_answer43) A string of negligible mass going over a clamped pulley of mass m supports a block of mass M as shown in the figure. The force on the pulley by the clamp is given by

A) $\sqrt{2}Mg$

B) $\sqrt{2}mg$

C) $\sqrt{{{(M+m)}^{2}}+{{m}^{2}}g}$

D) $\sqrt{{{(M+m)}^{2}}+{{M}^{2}})g}$

• question_answer44) The moment of inertia of a uniform ring of mass$m$and radius r about an axis,$AA$ touching the ring tangentially and lying in the plane of the ring only, as shown in figure , is

A) $\frac{5}{4}m{{r}^{2}}$

B) $\frac{5}{2}m{{r}^{2}}$

C) $\frac{1}{4}m{{r}^{2}}$

D) $\frac{1}{2}m{{r}^{2}}$

• question_answer45) If the disc shown in figure has mass M and it is free to rotate about its symmetrical axis passing through 0, its angular acceleration is

A) $\frac{6F}{MR}$

B) $\frac{3F}{MR}$

C) $\frac{6F}{5MR}$

D) $\frac{4F}{MR}$

• question_answer46) A small ball released from rest from a height h on a smooth surface of varying inclination, as shown in figure. The speed of the ball when it reaches the horizontal part of the surface is

A) ${{v}_{0}}=\sqrt{gh}$

B) ${{v}_{0}}=\sqrt{5gh}$

C) ${{v}_{0}}=\sqrt{2gh}$

D) None of these

• question_answer47) Two masses${{m}_{1}}=5\text{ }kg$and${{m}_{2}}=4.8\text{ }kg$ tied to a string are hanging over a light frictionless pulley. What is the acceleration of the masses when lift is free to move?

A) $0.2\text{ }m/{{s}^{2}}$

B) $9.8m/{{s}^{2}}$

C) $5m/{{s}^{2}}$

D) $4.8\text{ }m/{{s}^{2}}$

• question_answer48) A particle is acted upon by a conservative force $F=(7\hat{i}-6\hat{j})N$(no other force is acting on the particle). Under the influence of this force, particle moves from (0,0) to$(-3w,4w),$then

A) work done by the force is $3J$

B) work done by the force is $-45\text{ }J$

C) at (0, 0) speed of the particle must be zero

D) at (0, 0) speed of the particle must not be zero

• question_answer49) A full wave rectifier circuit along with the output is shown in the figure. The contribution (s) from the diode 1 is ( are )

A) C

B) AC

C) S.D

D) AB,C.D

• question_answer50) Two identical$p-n$junctions may be connected in series with a battery in three ways as shown in the figure. The potential drops across the two n-p junctions are equal in

A) circuit 1 and circuit 2

B) circuit 2 and circuit 3

C) circuit 3 and circuit 1

D) circuit 1 only

• question_answer51) A transistor is used in common emitter mode as an amplifier, then

A) the base emitter junction is forward unbiased

B) the base emitter junction is reverse biased

C) the input signal is connected in series with the voltage applied to bias of the base emitter junction

D) the input signal is connected in series with the voltage applied to bias the emitter collector junction

• question_answer52) Two point charges$+q$and$+4q$are located at $x=0$and$x=L$respectively. The location of a point on the$x-$axis at which the net electric field due to these two points charges is zero, is

A) $L/3$

B) $2L$

C) $4L$

D) $8L$

• question_answer53) If electric flux entering and leaving an enclosed surface is${{\phi }_{1}}$and${{\phi }_{2}}$respectively, the electric charge inside the enclosed surface will be

A) $({{\phi }_{1}}+{{\phi }_{2}}){{\varepsilon }_{0}}$

B) $({{\phi }_{2}}-{{\phi }_{1}}){{\varepsilon }_{0}}$

C) $({{\phi }_{1}}+{{\phi }_{2}}){{\varepsilon }_{0}}$

D) $({{\phi }_{2}}-{{\phi }_{1}})/{{\varepsilon }_{0}}$

• question_answer54) In a potentiometer experiment, the balancing with a cell is at 240 cm. On shunting the cell with a resistance of$2\,\Omega ,$the balancing length becomes 120 cm. The internal resistance of the cell is

A) $0.5\,\Omega$

B) $1\,\Omega$

C) $2\,\Omega$

D) $4\,\Omega$

• question_answer55) The total current supplied to the circuit by the battery is

A) 1 A

B) 2 A

C) 4 A

D) 6 A

• question_answer56) The displacement y of a particle in a medium can be expressed as $y={{10}^{-6}}\sin (100t+20x+\pi /4)m,$where t is in second and$x$in metre. The speed of the wave is

A) 2000m/s

B) 5 m/s

C) 20 m/s

D) 57cm/s

• question_answer57) If the phase difference between two points is $60{}^\circ$on a wave velocity of 360 m/s and frequency 500 Hz, then path difference between the two points is

A) 1 cm

B) 6 cm

C) 12cm

D) 24cm

• question_answer58) In a wave motion$y=A\sin (kx-\omega t),y$can represent

A) electric field

B) magnetic field

C) displacement

D) pressure

• question_answer59) If${{W}_{1}},{{W}_{2}}$and${{W}_{3}}$represent the work done in moving a particle from A to B along three different paths 1, 2 and 3 respectively in the gravitational field of a point mass m as shown in the figure, find the correct relation between ${{W}_{1}},{{W}_{2}}$and${{W}_{3}}$.

A) ${{W}_{1}}>{{W}_{2}}>{{W}_{3}}$

B) ${{W}_{1}}={{W}_{2}}={{W}_{3}}$

C) ${{W}_{1}}<{{W}_{2}}<{{W}_{3}}$

D) ${{W}_{2}}>{{W}_{2}}>{{W}_{3}}$

• question_answer60) A place where the vertical component of the earths magnetic field is zero has angle of dip is

A) $45{}^\circ$

B) $90{}^\circ$

C) $0{}^\circ$

D) $60{}^\circ$

• question_answer61) 20 mL of 0.5 N$HCl$and 35 mL of 0.1 N $NaOH$are mixed. The resulting solution will

A) be neutral

B) be basic

C) turn phenolphthalein solution pink

D) turn methyl orange red

• question_answer62) The cooling in refrigerator is due to

A) the reaction of the refrigerator gas

B) the expansion of ice

C) the expansion of the gas in the refrigerator

D) the work of the compressor

• question_answer63) Which of the following isomeric heptanes can yield seven different monochlorinated products upon free radical chlorination?

A) 3-methylhexane

B) 2, 2-dimethylpentane

C) 2-methylhexane

D) 2, 3-dimethylpentane

• question_answer64) In an exothermic equilibrium,$A+3BA{{B}_{3}}$all the reactants and products are in gaseous state. The formation of$A{{B}_{3}}$is favoured at

A) low temperature and low pressure

B) low temperature and high pressure

C) high temperature and high pressure

D) high temperature and low pressure

• question_answer65) The compound which is not formed during the dry distillation of a mixture of calcium formate and calcium acetate is

A) methanol

B) propanal

C) propanone

D) ethanol

• question_answer66) A bivalent metal has an equivalent mass of 32. The molecular mass of the metal nitrate is

A) 182

B) 168

C) 192

D) 188

• question_answer67) Arrange the following in the increasing order of their basic strengths $C{{H}_{3}}N{{H}_{2}},{{(C{{H}_{3}})}_{2}}NH,{{(C{{H}_{3}})}_{3}}N,N{{H}_{3}}$

A) $N{{H}_{3}}<{{(C{{H}_{3}})}_{3}}N<{{(C{{H}_{3}})}_{2}}NH<C{{H}_{3}}N{{H}_{2}}$

B) $N{{H}_{3}}<{{(C{{H}_{3}})}_{3}}N<C{{H}_{3}}N{{H}_{2}}<{{(C{{H}_{3}})}_{2}}NH$

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

D) $C{{H}_{3}}N{{H}_{2}}<{{(C{{H}_{3}})}_{2}}NH<{{(C{{H}_{3}})}_{3}}N<N{{H}_{3}}$

• question_answer68) The line spectrum of He+ ion will resemble that of

A) hydrogen atom

B) $L{{i}^{+}}ion$

C) helium atom

D) lithium atom

• question_answer69) 0.5 mole of each of${{H}_{2}},S{{O}_{2}}$and$C{{H}_{4}}$are kept in a container. A hole was made in the container. After 3 h, the order of partial pressures in the container will be

A) $pS{{O}_{2}}>p{{H}_{2}}>pC{{H}_{4}}$

B) $pS{{O}_{2}}>pC{{H}_{4}}>p{{H}_{2}}$

C) $p{{H}_{2}}>pS{{O}_{2}}>pC{{H}_{4}}$

D) $p{{H}_{2}}>pC{{H}_{4}}>pS{{O}_{2}}$

• question_answer70) Gold is extracted by hydrometallurgical process, based on its property

A) of being electropositive

B) of being less reactive

C) to form complexes which are water soluble

D) to form salts which are water soluble

• question_answer71) An evacuated glass vessel weighs 50 g when empty, 144.0 g when filled with a liquid of density$0.47\text{ }g\text{ }m{{L}^{-1}}$and 50.5 g when filled with an ideal gas at 760 mm Hg and 300 K. The molar mass of the ideal gas is $[R=0.0821L\text{ }atm\text{ }{{K}^{-1}}mo{{l}^{-1}}]$

A) 61.575

B) 130.98

C) 123.75

D) 47.87

• question_answer72) What is the correct order of acidity from weakest to strongest acid for these compounds

A) I<IV<III<II

B) III<IV<I<II

C) IV<I<III<II

D) II<III<I<IV

• question_answer73) A body of mass$x\text{ }kg$is moving with a velocity of$100\text{ }m{{s}^{-1}}$. Its de-Broglie wavelength is$6.62\times {{10}^{-35}}m$. Hence,$x$is $[h=6.62\times {{10}^{-34}}Js]$

A) 0.1 kg

B) 0.25 kg

C) 0.15 kg

D) 0.2 kg

• question_answer74) In the eclipsed conformation of ethane, the dihedral angle between the hydrogen atoms of adjacent methyl groups is

A) $60{}^\circ$

B) $120{}^\circ$

C) $0{}^\circ$

D) $180{}^\circ$

• question_answer75) A precipitate of$AgCl$is formed when equal volumes of the following are mixed$[{{K}_{sp}}$for$AgCl={{10}^{-10}}$]

A) ${{10}^{-4}}\text{ }M\text{ }AgN{{O}_{3}}and\text{ }{{10}^{-7}}M\text{ }HCl$

B) ${{10}^{-5}}\text{ }M\text{ }AgN{{O}_{3}}and\text{ }{{10}^{-6}}M\text{ }HCl$

C) ${{10}^{-5}}\text{ }M\text{ }AgN{{O}_{3}}and\text{ }{{10}^{-4}}M\text{ }HCl$

D) ${{10}^{-6}}\text{ }M\text{ }AgN{{O}_{3}}and\text{ }{{10}^{-6}}M\text{ }HCl$

• question_answer76) Amongst the following, the compound that can most readily get sulphonated is

A) benzene

B) toluene

C) nitrobenzene

D) chlorobenzene

• question_answer77) The major product of the addition of water molecule to propyne in the presence of mercuric sulphate and dilute sulphuric acid is

A) ethanal

B) 2-propanol

C) propane

D) propanone

• question_answer78) Which of the following is an amphoteric acid?

A) Glycine

B) Salicylic acid

C) Benzoic acid

D) Citric acid

• question_answer79) The crystal with metal deficiency defect is

A) $NaCl$

B) $FeO$

C) $KCl$

D) $ZnO$

• question_answer80) How many moles of Pt may be deposited on the cathode when 0.80 F of electricity is passed through a 1.0 M solution of$P{{t}^{4+}}$?

A) 1.0 mol

B) 0.20 mol

C) 0.40 mol

D) 0.80 mol

• question_answer81) 1 g of a non-volatile, non-electrolyte solute of molar mass 250 g/mol was dissolved in 51.2 g of benzene. If the freezing point depression constant,${{k}_{f}}$of benzene is$5.12\text{ }kg\text{ }K\text{ }mo{{l}^{-1}},$ the freezing point of benzene is lowered by

A) 0.3K

B) 0.5K

C) 0.2K

D) 0.4 K

• question_answer82) A 6% solution of urea is isotonic with

A) 1M solution of glucose

B) 0.05 M solution of glucose

C) 6% solution of glucose

D) 25% solution of glucose

• question_answer83) Pick out the incorrect statement from the following.

A) $sp$ hybrid orbitals are equivalent and are at an angle of$180{}^\circ$with each other

B) $s{{p}^{2}}$hybrid orbitals are equivalent and bond angle between any two of them is$120{}^\circ$

C) $s{{p}^{3}}{{d}^{2}}$hybrid orbitals are equivalent and are oriented towards corners of a regular octahedron

D) $ds{{p}^{2}}$hybrid orbitals are equivalent with a bond angle of$90{}^\circ$between any two of them

• question_answer84) For a chemical reaction$A\to B,$the rate of the reaction is$2\times {{10}^{-3}}$mol$d{{m}^{-3}}{{s}^{-1}},$when the initial concentration is 0.05 mol $d{{m}^{-3}}$. The rate of the same reaction is$1.6\times {{10}^{-2}}mol\text{ }d{{m}^{-3}}{{s}^{-1}}$ when the initial concentration is$0.1\text{ }mol\text{ }d{{m}^{-3}}$. The order of the reaction is

A) 2

B) 0

C) 3

D) 1

• question_answer85) The temperature of the slag zone in metallurgy of iron using blast furnace is

A) $1200-1500{}^\circ C$

B) $1500-1600{}^\circ C$

C) $400-700{}^\circ C$

D) $800-1000{}^\circ C$

• question_answer86) The temperature of the system decreases in an

B) isothermal compression

C) isothermal expansion

• question_answer87) In countries nearer to polar region, the roads are sprinkled with$CaC{{l}_{2}}$. This is

A) to minimise the wear and tear of the roads

B) to minimise the snow fall

C) to minimise pollution

D) to minimise the accumulation of dust on the road

• question_answer88) The correct order of reactivity of the three halides ethyl chloride (I), iso-propyl chloride (II) and benzyl chloride (III) in ${{S}_{N}}1$ reaction is

A) I>II>III

B) III>II>I

C) II>I>III

D) I>III>II

• question_answer89) $C{{H}_{3}}COOH\xrightarrow{LiAl{{H}_{4}}}X\xrightarrow[300{}^\circ C]{Cu}Y\xrightarrow[NaOH]{Dilute}Z$ In the above reaction, Z is

A) butanol

B) aldol

C) ketol

D) acetal

• question_answer90) The reaction in which phenol differs from alcohol is

A) it undergoes esterification with carboxylic acid

B) it reacts with ammonia

C) it forms yellow crystals of iodoform

D) it liberates${{H}_{2}}$with Na metal

• question_answer91) The solubility of a gas in water at 300 K under a pressure of 100 atm is$4\times {{10}^{-3}}kg{{L}^{-1}}$. Therefore, the mass of the gas in kg dissolved 250 mL of water under a pressure of 250 atm at 300 K is

A) $2.5\times {{10}^{-3}}$

B) $2.0\times {{10}^{-3}}$

C) $1.25\times {{10}^{-3}}$

D) $5.0\times {{10}^{-3}}$

• question_answer92) There are 20 naturally occurring ammo acids. The maximum number of tripeptides that can be obtained is

A) 8000

B) 6470

C) 7465

D) 5360

• question_answer93) An example of a sulphur containing amino acid is

A) lysine

B) serine

C) cysteine

D) tyrosine

• question_answer94) The species among the following, which can act as an acid and a base is

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

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

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

D) $C{{l}^{-}}$

• question_answer95) A compound A has a molecular formula${{C}_{2}}C{{l}_{3}}OH$. It reduces Fehlings solution and on oxidation, gives a monocarboxylic acid B. A can be obtained by the action of chlorine on ethyl alcohol. A is

A) chloroform

B) chloral

C) methyl chloride

D) monochloroacetic acid

• question_answer96) A certain reaction is at equilibrium at$82{}^\circ C$ and the enthalpy change for this reaction is 21.3 kJ. The value of$\Delta S(J{{K}^{-1}}mo{{l}^{-1}})$for the reaction is

A) 55.0

B) 60.0

C) 68.5

D) 120.0

• question_answer97) If in the reaction${{N}_{2}}{{O}_{4}}2NO_{2}^{-};x$ is that part of${{N}_{2}}{{O}_{4}}$which dissociates, then the number of molecules at equilibrium will be

A) 1

B) 3

C) $(1+x)$

D) ${{(1+x)}^{2}}$

• question_answer98) Reaction of diborane with ammonia gives initially

A) ${{B}_{2}}{{H}_{6}}.N{{H}_{3}}$

B) borazole

C) ${{B}_{2}}{{H}_{6}}.3N{{H}_{3}}$

D) ${{[B{{H}_{2}}{{(N{{H}_{3}})}_{2}}]}^{+}}{{[B{{H}_{4}}]}^{-}}$

• question_answer99) An aqueous solution containing 6.5 g of$NaCl$ of 90 purity was subjected to electrolysis. After the complete electrolysis, the solution was evaporated to get solid$NaOH$. The volume of 1M acetic acid required to neutralise$NaOH$ obtained above is

A) $1000c{{m}^{3}}$

B) $2000c{{m}^{3}}$

C) $100c{{m}^{3}}$

D) $200c{{m}^{3}}$

• question_answer100) Corrosion of iron is essentially an electrochemical phenomenon where the cell reactions are

A) Fe is oxidised to$F{{e}^{2+}}$and dissolved oxygen in water is reduced to$O{{H}^{-}}$

B) Fe is oxidised to$F{{e}^{3+}}$and${{H}_{2}}O$is reduced to$O_{2}^{2-}$

C) Fe is oxidised to$F{{e}^{2+}}$and${{H}_{2}}O$is reduced to

D) Fe is oxidised to$F{{e}^{2+}}$and${{H}_{2}}O$is reduced to${{O}_{2}}$

• question_answer101) The hybridisation of the central atom in$Br{{F}_{5}}$molecule is

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

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

C) $s{{p}^{3}}{{d}^{2}}$

D) ${{d}^{3}}s{{p}^{3}}$

• question_answer102) The correct statement with regard to$H_{2}^{+}$and $H_{2}^{-}$is

A) both$H_{2}^{+}$and$H_{2}^{-}$are equally stable

B) both$H_{2}^{+}$and$H_{2}^{-}$do not exist

C) $H_{2}^{-}$is more stable than$H_{2}^{+}$

D) $H_{2}^{+}$is more stable than$H_{2}^{-}$

• question_answer103) A covalent molecule$A{{B}_{3}}$has pyramidal structure. The number of lone pair and bond pair of electrons in the molecule a respectively

A) 2 and 2

B) 0 and 2

C) 3 and 1

D) 1 and 3

• question_answer104) The reaction involved in the oil of winter green test is$Salicylic\text{ }acid\xrightarrow[conc.{{H}_{2}}S{{O}_{4}}]{\Delta }product$. The product is treated with$N{{a}_{2}}C{{O}_{3}}$solution. The missing reagent in the above reaction is

A) phenol

B) $NaOH$

C) ethanol

D) methanol

• question_answer105) The correct order of ionisation energy of C, N, O, F is

A) $F<O<N<C$

B) $F<N<C<O$

C) $C<N<O<F$

D) $C<O<N<F$

• question_answer106) For a reaction$A+2B\xrightarrow[{}]{{}}C,$ the amount of C formed by starting the reaction with 5 moles of A and 8 moles of B is

A) 5 mol

B) 8 mol

C) 16 mol

D) 4 mol

• question_answer107) When plants and animals decay, the organic nitrogen is converted into inorganic nitrogen. The inorganic nitrogen is in the form of

A) ammonia

B) elements of nitrogen

C) nitrates

D) nitrides

• question_answer108) Use of chlorofluoro carbons is not encouraged because,

A) they are harmful to the eyes of people that use it

B) they damage the refrigerators and air conditioners

C) they eat away the ozone in the atmosphere

D) they destroy the oxygen layer

• question_answer109) Which of the following biomolecules contain non-transition metal ion?

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

B) Chlorophyll

C) Haemoglobin

D) Insulin

• question_answer110) Among the oxides, $M{{n}_{2}}{{O}_{7}}(I),{{V}_{2}}{{O}_{3}}(II),$ ${{V}_{2}}{{O}_{5}}(III),CrO(IV)$and$C{{r}_{2}}{{O}_{3}}(V),$the basic oxides are

A) I and II

B) II and III

C) III and IV

D) II and IV

• question_answer111) Which of the following complexes exists as pair of enantiomers?

A) $trans-{{[Co{{(en)}_{2}}C{{l}_{2}}]}^{+}}$

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

C) $[Co{{\{P{{({{C}_{2}}{{H}_{5}})}_{3}}\}}_{2}}ClBr]$

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

• question_answer112) Three dimensional molecules with cross links are formed in the case of a

A) thermoplastic

B) thermosetting plastic

C) Both (a) and (b)

D) None of these

• question_answer113) Which of the following is not present in a nucleotide?

A) Cytosine

B) Guanine

D) Tyrosine

A) 4-chloro-3,5-dimethyl phenol

B) 3-chloro-4,5-dimethyl phenol

C) 4-chloro-2,5-dimethyl phenol

D) 5-chloro-3,4-dimethyl phenol

• question_answer115) Alum is a water purifier, because it

A) coagulates the impurities

B) softens hard water

C) gives taste

D) destroys the pathogenic bacteria

• question_answer116) A diabetic person carries a packet or glucose with him always, because

A) glucose reduces the blood sugar level slowly

B) glucose increases the blood sugar level slowly

C) glucose reduces the blood sugar level

D) glucose increases the blood sugar level almost instantaneously

• question_answer117) A emulsifier is a substance which

A) stabilises the emulsion

B) homogenises the emulsion

C) coagulates the emulsion

D) accelerates the dispersion of liquid in liquid

• question_answer118) Which of the following pairs of elements cannot form an alloy?

A) Zn, Cu

B) Fe, Hg

C) Fe, C

D) Hg, Na

• question_answer119) The function of$Fe{{(OH)}_{3}}$in the contact process is

A) to remove arsenic impurity

B) to detect colloidal impurity

C) to remove moisture

D) to remove dust particles

• question_answer120) Consider the following statements

 I. Increase in concentration of reactant increases the rate of a zero order reaction II. Rate constant k is equal to collision frequency A, if ${{E}_{a}}=0$ III. Rate constant k is equal to collision frequency A, if ${{E}_{a}}=\infty$ IV. In k us T is a straight line V. In k vs 1 /T is a straight line
Correct statements are

A) I and IV

B) II and V

C) III and IV

D) ll and III

• question_answer121) Function of SER is

A) protein metabolism

B) lipid metabolism

C) carbohydrate metabolism

D) catabolic activity

• question_answer122) The basic principles of embryonic development were first given by

A) Weismann

B) Haeckel

C) Von Baer

D) Malthus

A) fishes and amphibians

B) Annelida and Arthropoda

C) Annelida and Mollusca

D) reptiles and mammals

• question_answer124) Corpus luteum in mammals occurs in

A) brain and connects two cerebral hemispheres

B) ovaries and produces progesterone

C) heart and initiate contraction

D) skin and acts as a pain receptor

• question_answer125) Which of the following helps in the absorption of vitamin$-{{B}_{12}}$?

A) Pepsin

B) Bile juice

C) Castles intrinsic gastric factor

D) Cholecy stokinin

• question_answer126) A fish introduced into a water body to control mosquito population is

A) Gambusia

B) Labeo

C) Notopterus

D) Fistularia

• question_answer127) Patella (knee cap) is an example of

A) replacing bones

B) sesamoid bones

C) visceral bones

D) compact bones

• question_answer128) Which of the following is correctly matched?

A) Enlarged P-wave-Acute myocardial infarction

B) QRS wave flat-Atherosclerotic heart disease

C) Enlarged Q and R-wave-Myocardial infarction

D) Elevated S-T-Enlargement of atria

• question_answer129) Fosciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively

A) redia and miracidium

B) cercaria and redia

C) cercaria and metacercaria

D) miracidium and metacercaria

• question_answer130) Match the parts of the human brain with their functions.

 Column I Column II A. Cerebrum 1. Controls the pituitary B. Cerebellum 2. Controls vision and hearing C. Hypothalamus 3. Controls the rate of heart beat D. Midbrain 4. Seat of intelligence 5. Maintains body posture

A) A-5 B-4 C-2 D-1

B) A-4 B-5 C-2 D-1

C) A-5 B-4 C-1 D-2

D) A-4 B-5 C-1 D-2

• question_answer131) The endosymbiotic hypothesis of mitochondrial origin states that

A) mitochondria were capable of self-duplication

B) mitochondria were initially aerobic bacteria

C) mitochondria were chloroplast in the beginning

D) None of the above

• question_answer132) Select the correct sequence of stages in the evolution of modern man (Homo sapiens)

A) Australopithecus, Homo habilis, Neanderthal, Cro-magnon man, Modem man

B) Homo habilis, Neanderthal, Australopithecus, Cro-magnon man, Modern man

C) Australopithecus, Neanderthal, Cro-magnon man Homo habilis, Modern man

D) Neanderthal. Australopithecus, Cro-magnon man, Homo habilis, Modern man

• question_answer133) Host cells in response to viral infections produces a low molecular weight protein, that protect other cells against further viral infection. This substance is

A) phytotoxin

B) antibody

C) hormone

D) interferon

• question_answer134) Which of the following branch of biology is correctly matched?

A) Ornithology-Study of mammals

B) Herpetalogy-Study of molluscs

C) Ophiology-Study of snakes

D) Therology-Study of birds

• question_answer135) If a haemophilic carrier female marries a normal man, the chances are that

A) all the daughters will have haemophilia

B) 50% of the daughters will have haemophilia

C) 50% of the sons will have haemophilia

D) all the sons will have haemophilia

• question_answer136) Which one of the given statement is not true for Archaeopteryx?

A) Each wing had three clawed digit

B) Hind feet with five digits

C) Long jointed lizard like tail

D) The codont teeth on both jaws

• question_answer137) A natural form of genetic engineering is exhibited by

A) Haemophilus influenza

B) E. coli

C) Dolly

D) Agrobacterium tumefaciens

• question_answer138) Glands in a vertebrate body originate from

A) ectoderm, mesoderm and endoderm

B) ectoderm and endoderm

C) mesoderm

D) ectoderm

A) substance that activates transcription in cancer cells

B) oncogene promoting cancer

C) substance that produces tumour

D) All of the above

• question_answer140) Identify the incorrect match

A) Mulberry silk-Bombyx mori

B) Tasar silk-Antheraea pernyi

C) Muga silk-Antheraea assama

D) Erisilk-Affacus ricini

• question_answer141) All chordates at one or other stage possess

A) two pairs of pentadactyl limbs

B) pharyngeal gill slits

C) movable jaw

D) vertebral column

• question_answer142) Statement I An injury to the anterior pituitary affects the growth of a person. Statement II Injury to adrenal cortex is not likely to affect secretion of corti Choose the correct option

A) Statement I is correct but II is incorrect

B) Statement II is correct but I is incorrect

C) Both statement are correct

D) Both statements are incorrect

A) biconvex RBCs to increase the surface area

B) biconcave RBCs to increase the surface area

C) spherical RBCs to increase the surface area

D) no RBCs

• question_answer144) Match the Column I and Column II.

 Column I Column II A. Squamous 1. Intestinal glands B. Cuboidal 2. Trachea C. Columnar 3. Ovary D. Ciliated 4. Blood vessels 5. Bronchioles

A) A-2, B-5, C-1, D-3

B) A-4, B-3, C-1, D-2

C) A-4, B-3, C-1, D-5

D) A-4, B-5, C-1, D-2

• question_answer145) A person was found to possess reduced haemoglobin content in the blood, caused due to disturbance in formation of RBCs. He is suffering from

A) vitamin$-{{B}_{1}}$defeciency

B) vitamin-A defeciency

C) vitamin$-{{B}_{12}}$defeciency

D) vitamin-E deficiency

A) T H Morgan and W Castle

B) Stern and Hotta

C) Pontecarvo

D) Bridges and Burns

• question_answer147) Which of the following region of root is responsible for increase in length of root?

A) Root cap region

B) Meristematic region

C) Region of elongation

D) Mature region

A) ${{C}_{6}}{{H}_{12}}{{O}_{6}}+6{{O}_{2}}\xrightarrow[{}]{{}}6{{O}_{2}}+6{{H}_{2}}O$

B) ${{C}_{6}}{{H}_{12}}{{O}_{6}}\xrightarrow[{}]{{}}2{{C}_{2}}{{H}_{5}}OH+2C{{O}_{2}}$

C) ${{C}_{6}}{{H}_{12}}{{O}_{6}}\xrightarrow[{}]{{}}2{{C}_{3}}{{H}_{4}}{{O}_{3}}+4H$

D) ${{C}_{3}}{{H}_{4}}{{O}_{3}}+NADH\xrightarrow[{}]{{}}{{C}_{2}}{{H}_{5}}OH+C{{O}_{2}}+NA{{D}^{+}}$

• question_answer149) The protein that reproduce within the living cells are termed as

A) plasmids

B) phages

C) prions

D) prophages

• question_answer150) Water pollution is best assessed by determining

A) DO and BOD

B) BOD and turbidity

C) DO and acidity

D) Hardness and alkalinity

• question_answer151) The correct sequence of cellular growth stages is

A) division$\to$differentiation$\to$elongation

B) differentiation$\to$division$\to$elongation

C) division$\to$elongation$\to$differentiation

D) elongation$\to$differentiation$\to$division

• question_answer152) The organisms that thrives on the remains of dead plants and animals are categorised as

A) carnivore

B) omnivore

C) scavangers

D) predators

• question_answer153) In which of the following, determination of order of bases in a DNA molecule takes place

A) Gene probing

B) Gene splicing

C) Gene mapping

D) Gene sequencing

• question_answer154) A pea with white flower was crossed with another pea with white flower. When they selfed, the${{F}_{2}}-$generation produced purple and white in the ratio of$9:7$. The reason for the result is that

A) It is typical monohybrid Mendelian ratio

B) purple flower colour is dominant over white

C) it is a complementary factor

D) None of the above

• question_answer155) The dark coloured dead wood present in the central region of old tree is

A) spring wood

B) heart wood

C) sap wood

D) cambium

• question_answer156) Diffusion Pressure Deficit (DPD) is equal to the Osmotic pressure substracted by

A) Osmotic Pressure (OP)

B) Turgor Pressure (TP)

C) Suction Pressure (SP)

D) Water Potential$({{\psi }_{w}})$

• question_answer157) Which of the following statement is not true about Griffiths experiment?

A) The experiment was conducted in 1928

B) The experiment occurs with Streptococcus pneumonia

C) R and S-strain of bacteria

D) The experiment proves the process of ransduction

• question_answer158) Oxygen released in photosynthesis comes out by

A) photophosphorylation

B) photolysis of water

C) photorespiration

D) Kelvin cycle

• question_answer159) In protein synthesis the base sequence of mRNA determines the primary structure of polypeptide chain because

A) it determine the sequence of alignment of amino acid charged$tRNA$molecule

B) there is one to one coding relationship between each base on mRNA and amino acid

C) each amino acid is defined by a pair of base on$mRNA$

D) amino acid molecule align directly on the polynucleotide on $mRNA$

• question_answer160) What do you mean to the mutation in which replacement of a nucleotide occur by another similar type?

A) Inversion

B) Transition substitution

C) Transversion substitution

D) Insertion frame-shift

• question_answer161) Which of the following assumption is not belonging to Hardy-Weinberg principle?

A) The population size is very large

B) Random mating is occurring

C) Natural selection takes place

D) No mutation occurs

• question_answer162) Which ion is used in the protoplast fusion with the PEG (polyethylene glycol)?

A) $N{{a}^{+}}$

B) $C{{a}^{++}}$

C) ${{K}^{+}}$

D) $M{{g}^{+}}$

• question_answer163) Which of the following rule states that Avian and mammalian forms are generally of higher size in colder region as compared to warmer region?

A) Bergmanns rule

B) Alien rule

C) Gloger rule

D) Hardy-Weinberg rule

A) catalytic antibodies

B) neutral antibodies

C) non-specific antibodies

D) defermed antibodies

A) all the animals of a place

B) all the animals and plants found in an area

C) human beings in an area

D) animal/plants of a species living in a specific area

• question_answer166) Parthenogenetic embryos in plants are those which are formed by

A) unfertilised eggs

B) fertilised eggs

C) sporophytic cells

D) male gametophyte

• question_answer167) Multiplication of genetically identical copies of a cultiver by asexual reproduction is known as

A) aclonal propagation

B) clonal propagation

C) vegetative propagation

D) polyclonal propagation

• question_answer168) The gene controlling seven traits in pea studied by Mendel were later found to be located on the following number of chromosomes

A) seven

B) four

C) five

D) six

• question_answer169) Glycolate accumulates in chloroplast when there is

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

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

C) bright light

D) low temperature

• question_answer170) Part of gene which codes for an enzyme is

A) cistron

B) codon

C) exon

D) intron