# Solved papers for AMU Medical AMU Solved Paper-2014

### done AMU Solved Paper-2014

• question_answer1) The measured value of length of a simple pendulum is 20 cm known with 2 mm accuracy. The time for 50 oscillations was measured to be 40 s with Is resolution. Calculate, the percentage accuracy in the determination of acceleration due to gravity g from the above measurements.

A) 6.0%

B) 7.2%

C) 9.4%

D) 10.2%

• question_answer2) Which of the following curves represents the variation of total energy with radius r for a satellite in a circular orbit?

A) P

B) Q

C) R

D) S

• question_answer3) In a container, 200 g of aluminum (specific heat 900 J/kg. K) at ${{100}^{o}}C$ is mixed with 50 g of water at ${{20}^{o}}C$, with the mixture thermally isolated. Find the entropy change of the aluminum-water system.

A) +2.8 J/K

B) -22.1 J/K

C) +24.9 J/K

D) None of the above

• question_answer4) Figure shows three particles with charges${{q}_{1}}=2Q,\,{{q}_{2}}=-2Q$ and ${{q}_{3}}=-4Q$, each a distance d from the origin. Find the net electric field E at the origin.

A) $\frac{2.56Q}{4\pi {{\varepsilon }_{0}}{{d}^{2}}}$ towards + ve x-axis

B) $\frac{6.93Q}{4\pi {{\varepsilon }_{0}}{{d}^{2}}}$ towards + ve x-axis

C) $\frac{6.93Q}{4\pi {{\varepsilon }_{0}}{{d}^{2}}}$ towards - ve x-axis

D) Zero

• question_answer5) In Millikans experiment, an oil drop of radius 1.64 am and density $0.85\,\,g/c{{m}^{3}}$ is suspended when a downward electric field of $1.9\times {{10}^{5}}\,N/C$ is applied. What is the charge on the drop in terms of e?

A) -9e

B) -7e

C) -5e

D) -3e

• question_answer6) A uniformly charged conducting sphere of diameter 1.2 m has a surface charge density of$8.1\,\mu C/{{m}^{2}}$. Find the total electric flux leaving the surface of the sphere.

A) $4.1\times {{10}^{6}}N-{{m}^{2}}/C$

B) $1.3\times {{10}^{4}}N-{{m}^{2}}/C$

C) $-4.1\times {{10}^{6}}N-{{m}^{2}}/C$

D) Zero

• question_answer7) A thin non-conducting rod of length 50 cm has a positive charge of uniform linear density${{10}^{-12}}C/m$. Find the electric potential due to the rod at a point, which is at a perpendicular distance of 1.0 cm from one-end of the rod$({{\varepsilon }_{0}}=8.8\times {{10}^{-12}}F/m)$.

A)  0.02 V

B)  0.04 V

C)  0.06 V

D) 1.02 V

E) None of the above

• question_answer8) Arrange the following materials in the increasing order of their resistivity. Copper, Platinum, Silver, Aluminium

A) Copper, Silver, Platinum, Aluminium

B) Silver, Copper, Aluminium, Platinum

C) Aluminium, Platinum, Silver, Copper

D) Platinum, Aluminium, Copper, Silver

• question_answer9) In a given circuit, each cell has an emf of 0.15 V and internal resistance of 0.25 $\Omega$. Find the current in the circuit.

A) 0.12 A

B) 0.012 A

C) 0.045 A

D) 0.45 A

• question_answer10) The figure shows four directions for the velocity vector v of a positively charged particle moving through a uniform electric field E and a uniform magnetic field B. Of all four directions, which results in a net force of zero?

A) 4

B) 1

C) 3

D) 2

• question_answer11) Four conductors carrying 2.0 A of current into or out of the page are shown in the diagram. A path C is indicated for the line integral $\oint{B.\,ds}$ . Find the value of the integral for the path C.

A) $2{{\mu }_{0}}$

B) Zero

C) $-2{{\mu }_{0}}$

D) $-8{{\mu }_{0}}$

• question_answer12) Figure shows a circuit that contains three identical resistors with resistance $R=9.0\,\Omega$, two identical inductors with inductance L = 4.0 mH, and a battery with emf E = 18 V. Find the ratio of the currents in the circuit just after and long after the switch K is closed.

A) 1/3

B) 2/3

C) 1

D) 4/3

• question_answer13) An iron rod is subjected to the cycles of magnetisation at the rate of 50 Hz. Given the density of the rod is 8 x 103 kg/m3 and specific heat is $0.11\times {{10}^{-3}}$ $cal/k{{g}^{o}}C$. The rise in temperature per minute, if the area enclosed by the B-H loop corresponds to energy of ${{10}^{-2}}J$ is

A) ${{78}^{o}}C$

B) ${{88}^{o}}C$

C) $8.1\,C$

D) None of the above

• question_answer14) A series L-C-R circuit has inductance L = 12 mH, capacitance $C=1.2\mu F$, and resistance R = 12$\Omega$. At what time will the amplitude of the charge oscillations in the circuit be 10% of its initial value?

A) 2.0 ms

B) 3.0 ms

C) 4.0 ms

D) 5.0 ms

E) (e) None of the above

• question_answer15) A beam of monochromatic light reflects and refracts at point A, as shown in the diagram. Find the angle of refraction at point A.

A) ${{60}^{o}}$

B) ${{45}^{o}}$

C) ${{30}^{o}}$

D) None of these

• question_answer16) The electric field of a certain plane electromagnetic wave is given by ${{E}_{x}}=0$, ${{E}_{y}}=0,\,{{E}_{z}}=2.0\cos \,[\pi \times {{10}^{15}}(t-x/c)]$ . The wave is propagating in the positive x-direction. Find the expressions for the components of the magnetic field of the wave.

A) ${{B}_{x}}=0,\,{{B}_{y}}=6.7\times {{10}^{-9}}\cos [\pi \times {{10}^{16}}(t-x/c)]$,${{B}_{z}}=0$

B) ${{B}_{x}}=0,\,{{B}_{y}}=-6.7\times {{10}^{-9}}\cos [\pi \times {{10}^{15}}(t-x/c)]$,${{B}_{z}}=0$

C) ${{B}_{x}}=0,\,{{B}_{y}}=0,\,{{B}_{z}}=2.0\cos [\pi \times {{10}^{15}}(t-x/c)]$

D) ${{B}_{x}}=0,\,{{B}_{y}}=0,\,{{B}_{z}}=-6.7\times {{10}^{-9}}\cos [\pi (t-x/c)]$

• question_answer17) A beam of parallel light rays is incident on a solid transparent sphere of refractive index $\mu$. If a point image is produced just at the back of the sphere, what is the refractive index of the sphere?

A) 2.0

B) 2.3

C) 2.5

D) 2.7

• question_answer18) In a double slit experiment, the distance between slits is 5.0 mm and the slits are 1.0 m from the screen. Two interference patterns can be seen on the screen; one due to light with wavelength 480 nm and the other due to light with wavelength 600 nm. Find the separation on the screen between the third order bright fringes of the two interference patterns.

A) 0.072 mm

B) 0.063 mm

C) 0.037 mm

D) 0.019 mm

• question_answer19) Find the de-Broglie wavelength of an electron with a kinetic energy of 120 eV.

A) 95pm

B) 102pm

C) 112pm

D) 124pm

• question_answer20) A LED is constructed from a p-n junction based on a certain semi-conducting material whose energy gap is 1.9 eV. Find the wavelength of the emitted light.

A) $2.9\times {{10}^{-9}}m$

B) $1.6\times {{10}^{-8}}m$

C) $6.5\times {{10}^{-7}}m$

D) $9.1\times {{10}^{-5}}m$

• question_answer21) The energy spectrum of $\beta$-particle [number N(E,) as a function of $\beta$-energy E] emitted from a radioactive source is

A)

B)

C)

D)

• question_answer22) For the following fission reaction$^{235}U+n{{\xrightarrow{{}}}^{140}}Ce{{+}^{94}}Zr+2n$,Find the disintegration energy. $({{M}_{U}}=23502\,u,\,{{M}_{n}}=1.0\,u,\,\,{{M}_{Ce}}=139.9\,\,u$,${{M}_{Zr}}=93.9\,\,u)$

A) 205 MeV

B) 198 MeV

C) 123 MeV

D) 89 MeV

• question_answer23) Find the minimum frequency of a photon that can produce a singly ionized He-atom.

A) $5.6\times {{10}^{10}}Hz$

B) $6.9\times {{10}^{12}}Hz$

C) $7.3\times {{10}^{13}}Hz$

D) $1.31\,\,\,{{10}^{15}}Hz$

• question_answer24) The work functions of four materials ${{M}_{1}},{{M}_{2}},{{M}_{3}}$ and ${{M}_{4}}$ are 1.9 eV, 2.5 eV, 3.6 eV, and 4.2 eV, respectively. Which of these material is (are) useful in a photocell to detect visible light?

A) ${{M}_{1}}$only

B) ${{M}_{1}}$ and ${{M}_{2}}$

C) ${{M}_{3}}$ only

D) All of these

• question_answer25) Two amplifiers are connected in series. The first amplifier has a voltage gain of 10 while the second one has voltage gain of 20. If the input signal is 0.01 V, calculate the voltage of the output AC signal.

A) 2V

B) 3V

C) 4V

D) 5V

A) one carrier with two side band frequencies

B) one carrier

C) one carrier with infinite frequencies

D) one carrier with high frequency

• question_answer27) Calculate the focal length of reading glasses of a person, if his distance of distinct vision is 75 cm.

A) 25.6 cm

B) 37.5 cm

C) 75.2 cm

D) 100.4 cm

• question_answer28) A battery of V voltage is connected across the potentiometer wire AC of total resistance ${{R}_{0}}$as shown. Calculate, the potential across the resistance R, if the sliding contact point B is exactly at the middle of the potentiometer wire.

A) $\frac{2VR}{4{{R}_{0}}+R}$

B) $\frac{4VR}{2{{R}_{0}}+R}$

C) $\frac{2VR}{{{R}_{0}}+4R}$

D) $\frac{4V{{R}_{0}}}{{{R}_{0}}+2R}$

• question_answer29) The diameter of a given wire is measured by a screw gauze. The three measurements of the diameter give the reading in cm as 0.036, 0.035 and 0.037. What is the percentage error of the measurement?

A) 1.8%

B) 2.8%

C) 3.2%

D) 4.6%

• question_answer30) Which of the following ratios has the dimension of mass?

A) Volume / Density

B) Surface tension/${{\left( Angular\text{ }velocity \right)}^{2}}$

C) Linear momentum / Force

D) Pressure / Power

• question_answer31) The distance x of a particle moving in one I dimension under the action of constant force is related to the time t by the relation,$t=\sqrt{x}+3$Find the displacement of the particle when its velocity is 6.0 m/s.

A) 9.0m

B) 6.0m

C) 4.0 m

D) 0.0 m

• question_answer32) Which of the following pairs of vectors are parallel?

A) $A=\hat{i}-2\hat{j}\,;\,B=\hat{i}-5\hat{j}$

B) $A=\hat{i}-10\hat{j}\,;\,B=2\hat{i}-5\hat{j}$

C) $A=\hat{i}-5\hat{j}\,;\,B=\hat{i}-10\hat{j}$

D) $A=\hat{i}-5\hat{j}\,;\,B=2\hat{i}-10\hat{j}$

• question_answer33) From the top of a tower of height 10 m, one fire is shot horizontally with a speed of $5\sqrt{3}$m/s. Another fire is shot upwards at angle of ${{60}^{o}}$ with the horizontal at some interval of time with the same speed of $5\sqrt{3}$ m/s. The shots collide in air at a certain point. The time interval between the two fires is

A) 2s

B) 1 s

C) 0.5 s

D) 0.25 s

• question_answer34) A tube of length L is filled completely with an incompressible liquid of mass M and closed at both ends. The tube is rotated in a horizontal plane about one of its ends with a uniform angular velocity co. The force exerted by the liquid at the other end is.

A) $\frac{1}{2}M{{\omega }^{2}}L$

B) $M{{\omega }^{2}}L$

C) $\frac{1}{4}M{{\omega }^{2}}L$

D) $\frac{1}{6}M{{\omega }^{2}}L$

• question_answer35) In an elastic collision, a neutron collides with carbon. How much energy (in percentage) of neutron is transferred to carbon?

A) 90%

B) 45%

C) 28 %

D) 12%

• question_answer36) A block of mass 1.0 kg moving on a horizontal surface with speed 2m/s enters a rough surface. The retarding force $({{F}_{r}})$ on the block is given by ${{F}_{r}}=-\frac{k}{x};\,10\,m<x<100\,m$$=0\,;\,x<10\,m$ and $x>100\,\,m$,where, $k=0.5\,J$. The kinetic energy of the block at $x=100\,m$ is

A) 4.5 J

B) 2.5 J

C) 0.5 J

D) 1.5 J

• question_answer37) Two uniform rods of different materials ${{M}_{1}}$ and ${{M}_{2}}$ have lengths 2 m and 3 m, respectively. The mass per unit length of rods ${{M}_{1}}$ and ${{M}_{2}}$ are 1 kg and 2 kg respectively. If the rods are arranged, as shown, the position of the cm relative to point O is

A) 4.9m

B) 3.9 m

C) 2.9 m

D) 2.2 m

• question_answer38) If we consider the mass of black hole as the mass of the earth $({{M}_{e}})$, then the radius of black hole would be

A) $\frac{2G{{M}_{e}}}{{{C}^{2}}}$

B) $\frac{2G{{M}_{e}}}{3{{C}^{2}}}$

C) $\frac{G{{M}_{e}}}{3{{C}^{2}}}$

D) $\frac{G{{M}_{e}}}{{{C}^{2}}}$

• question_answer39) The surface tension and vapour pressure of water at ${{30}^{o}}C$ are $7.2\times {{10}^{-2}}$ N/m and$2.4\times {{10}^{3}}$, respectively. What is the radius of the smallest droplet of water which can be formed without evaporating at ${{30}^{o}}C$?

A) $1.6\times {{10}^{-2}}m$

B) $2.9\times {{10}^{-3}}m$

C) $5.6\times {{10}^{-4}}m$

D) $6.0\times {{10}^{-5}}m$

• question_answer40) The temperature on a Fahrenheit scale is$98.6{{\,}^{o}}F$? What is the corresponding temperature on a kelvin scale?

A) 310.2 K

B) 280.3 K

C) 420.5 K

D) 370.6 K

• question_answer41) Two spherical bodies P (radius 9 cm) and Q (radius 27 cm) are at temperatures ${{T}_{p}}$ and ${{T}_{Q}}$respectively. If the maximum intensities in the emission spectra of P and Q are, respectively, at 300 nm and 900 nm, what is the ratio of the rate of energy radiated by P to that by Q?

A) 6

B) 7

C) 8

D) 9

• question_answer42) The four curves ${{A}_{1}},{{A}_{2}},{{A}_{3}}$ and ${{A}_{4}}$ are shown on p-V diagram. Which of the curves represents adiabatic process?

A) ${{A}_{3}}$

B) ${{A}_{4}}$

C) ${{A}_{1}}$

D) ${{A}_{2}}$

• question_answer43) The mean free path of a gas molecule at STP is$2.1\times {{10}^{-7}}m$. Find the diameter of the molecule. (Boltzmann constant$=1.4\times {{10}^{23}}J/K$)

A) $5.2\overset{\text{o}}{\mathop{\text{A}}}\,$

B) $4.6\overset{\text{o}}{\mathop{\text{A}}}\,$

C) $3.5\overset{\text{o}}{\mathop{\text{A}}}\,$

D) $2.1\overset{\text{o}}{\mathop{\text{A}}}\,$

• question_answer44) For a damped harmonic oscillator of mass 200 g, the values of spring constant and damping constant are, respectively, 90 N/m and 0.04 kg/s. The time taken for its amplitude of vibration of drop to half of its initial value is (log, 2 = 0.693)

A) 7.0s

B) 14.2 s

C) 15.9s

D) 26.6 s

• question_answer45) For the following reference circle, the equation of simple harmonic motion (SHM) is

A) $x=-2\sin (2\pi t+\pi /4)$

B) $x=-2\sin (3t+\pi /3)$

C) $x=-2\cos (\pi /6-t)$

D) $x=-2\cos \pi t$

• question_answer46) Find the equation of a plane progressive wave travelling along positive: c-axis having amplitude 0.04m, frequency 120 Hz and speed 360 m/s.

A) $y=0.04\sin 2\pi (120\,t-x/3)$

B) $y=-0.04\sin 2\pi (110\,t-x/3)$

C) $y=0.04\sin 2\pi (120\,t+x/3)$

D) $y=0.04\sin \,\pi (120\,t-x/3)$

• question_answer47) A 70 cm long sonometer wire is in unison with a tuning fork. If the length of the wire is decreased by 1.0 cm, it produces 4 beats per second with the same tuning fork. The frequency of the tuning fork is

A) 186 Hz

B) 220 Hz

C) 276 Hz

D) 312 Hz

• question_answer48) Two open organ pipes on sounding together produce 5 beats per second. If the length of the smaller pipe is 0.66m, the length of the larger pipe would be

A) 0.95m

B) 0.85 m

C) 0.75 m

D) 0.67 m

• question_answer49) An observer moves towards a stationary source of sound with a velocity one-fifth the velocity of sound. What is the percentage change in the apparent frequency?

A) Increase by 0.5 %

B) Decrease by 5 %

C) Increase by 20 %

D) Increase by 50 %

• question_answer50) A steel wire of 1.5 m long of diameter 0.25 cm and a brass wire of 1.0 m long of diameter 0.25 m are loaded as shown. Calculate, the elongation of the brass wire.

A) $1.1\times {{10}^{-4}}m$

B) $1.3\times {{10}^{-4}}m$

C) $1.5\times {{10}^{-4}}m$

D) $1.7\times {{10}^{-4}}m$

• question_answer51) Which one of the following is an example of ${{3}^{o}}$ amide?

A)

B)

C)

D)

• question_answer52) End product of the following reaction is

A)

B)

C)

D)

• question_answer53) The major product of the reaction of with electrophile, ${{E}^{+}}$, is

A)

B)

C)

D)

• question_answer54) End product of the following sequence of reaction is

A)

B)

C)

D)

• question_answer55) Which one is least reactive towards nucleophilic substitution reaction?

A) o-aminochlorobenzene

B) Chlorobenzene

C) o-nitrochlorobenzene

D) 2, 4-dinitrochlorobenzene

• question_answer56) A liquid which decomposes at its boiling point can be purified by

A) distillation at atmospheric pressure

B) distillation under reduced pressure

C) fractional distillation

D) steam distillation

A) Benzene

B) Benzoic acid

C) Nitrobenzene

D) Toluene

• question_answer58) Enthalpy of combustion of carbon to $C{{O}_{2}}$ is -393.5 kJ $mo{{l}^{-1}}$. What amount of heat will be released upon formation of 35.2 g of $C{{O}_{2}}$ from carbon and oxygen gas?

A) 214.8kJ

B) 314.8kJ

C) 414.8kJ

D) 514.8kJ

• question_answer59) One mole of an ideal gas at 300 K is expanded isothermally from initial volume of 1 L to 10 L. The $\Delta E$ for this process is (R = 2 cal$mo{{l}^{-1}}{{K}^{-1}}$)

A) 163.7 cal

B) zero

C) 138.1 cal

D) 9 L atom

• question_answer60) For a certain process, and $\Delta H=178\,kJ$$\Delta S=160\,J/K$. What is the minimum temperature at which the process is spontaneous (assuming that $\Delta H$ and $\Delta S$ do not vary with temperature)

A) 2112.3 K

B) 136.7K

C) 275.8 K

D) 1112.5K

• question_answer61) A person inhales 640 g of ${{O}_{2}}$ per day. If all ${{O}_{2}}$is used for converting sugar into $C{{O}_{2}}$ and${{H}_{2}}O$, how much sucrose $({{C}_{12}}{{H}_{22}}{{O}_{11}})$ is consumed in the body in one day and what is the heat evolved? $\Delta H$ for combustion of sucrose $=-5645\,kJ\,mo{{l}^{-1}}$

A) 530 g, 9403.34 kJ

B) 570 g, 9408.34 kJ

C) 500 g, 9402.27 kJ

D) 520 g, 9435.21 kJ

• question_answer62) Copper crystallises in a face centred cubic lattice with a unit cell length of 361 pm. What is the radius of copper atom in pm?

A) 157

B) 181

C) 108

D) 128

• question_answer63) For the set of reactions,(i) $A+BC\,;$ (ii) $C+B\xrightarrow[{}]{{{k}_{3}}}D,$${{k}_{1}}\,[A][B]-{{k}_{2}}[C]-{{k}_{3}}[C][B]$ is equal to

A) $\frac{-d\,[A]}{dt}$

B) $\frac{-d\,[B]}{dt}$

C) $\frac{d\,[C]}{dt}$

D) $\frac{d\,[D]}{dt}$

E) None of the above

• question_answer64) For the reaction, $2{{N}_{2}}{{O}_{5}}\xrightarrow{{}}4N{{O}_{2}}+{{O}_{2}};$ the rate is directly proportional to $[{{N}_{2}}{{O}_{5}}]$. At${{45}^{o}}C$, 90% of the ${{N}_{2}}{{O}_{5}}$ reacts in 3600 seconds. The value of the rate constant is

A) $3.2\times {{10}^{-4}}{{s}^{-1}}$

B) $6.4\times {{10}^{-4}}{{s}^{-1}}$

C) $8.5\times {{10}^{-4}}{{s}^{-1}}$

D) $12.8\times {{10}^{-4}}{{s}^{-1}}$

A) Heat is evolved

B) The concentration of an intermediate is constant

C) Product is being formed faster than reactants are regenerated

D) None of the above

• question_answer66) Nitrogen gas is physically adsorbed on iron at ${{190}^{o}}C$ but chemisorbed to form a nitride at

A) ${{250}^{o}}C$

B) ${{300}^{o}}C$

C) ${{500}^{o}}C$

D) ${{190}^{o}}C$

• question_answer67) In the equilibrium, ${{N}_{2}}{{O}_{4}}(g)2N{{O}_{2}}(g)$the ${{N}_{3}}{{O}_{4}}$ is fifty per cent dissociated at ${{60}^{o}}C$. What will be the value of ${{K}_{p}}$ at this temperature and one atmosphere?

A) 0.33 atm

B) 1.33 atm

C) 2.33 atm

D) 3.33 atm

• question_answer68) 28 g of ${{N}_{2}}$ and 6 g of ${{H}_{2}}$ were mixed. At equilibrium, 17 g $N{{H}_{3}}$ was produced. The weights of ${{N}_{2}}$ and ${{H}_{2}}$ at equilibrium are respectively

A) 11 g, 0 g

B) 1 g, 3 g

C) 14 g, 3 g

D) 11 g, 3 g

• question_answer69) The equilibrium constant for the reaction$2G+JD+2T$ is $1.5\times {{10}^{3}}$. When 1.0 mole of G, 2.0 mole of J and 0.5 mole of D are put in a 1.0 L flask and allowed to reach equilibrium, then the equilibrium concentration of T is

A)  0.039

B) 0.078

C) 2

D) 5

E) None of the above

F)

• question_answer70) The value of the equilibrium constant for the reaction, ${{N}_{2}}+2{{O}_{2}}2N{{O}_{2}}$ is 100. The equilibrium constant for the reaction $N{{O}_{2}}\frac{1}{2}{{N}_{2}}+{{O}_{2}}$ will be

A) 100

B) 0.010

C) 0.10

D) 1000

• question_answer71) Predict the effect of increased pressure on the following reaction equilibrium, $2S{{O}_{2}}(g)+{{O}_{2}}(g)2S{{O}_{3}}(g)$

A) Equilibrium shift to the right

B) Equilibrium shift to the left

C) No effect on equilibrium

D) Reaction stops

• question_answer72) What mass of ${{N}_{2}}{{H}_{4}}$ can be oxidised to ${{N}_{2}}$ by$24.0\,g\,{{K}_{2}}C{{r}_{2}}{{O}_{7}}$, which is reduced to $Cr(OH)_{4}^{-}$?

A)  194.2 g

B)  2.97 g

C)  2.40 g

D)  32 g

E) None of these above

• question_answer73) Given the reaction for the discharge of a cobalt-cadmium battery $2Co{{(OH)}_{3}}+Cd+2{{H}_{2}}O\xrightarrow{{}}$$2Co{{(OH)}_{2}}+Cd{{(OH)}_{2}}$ What species is oxidised during the discharge of the battery?

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

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

C) Cd

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

• question_answer74) What is the oxidation number of vanadium in$R{{b}_{4}}Na[H{{V}_{10}}{{O}_{28}}]$?

A) +8

B) +5

C) +3

D) +1

• question_answer75) The compound not acting as reducing agent is

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

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

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

D) All of these

• question_answer76) Choose the correct alternative for the compounds: $[Ni{{(CO)}_{4}}]$and ${{[Ni{{(CN)}_{4}}]}^{2-}}$

A) Tetrahedral, Paramagnetic Tetrahedral, Diamagnetic

B) Tetrahedral, Diamagnetic Square planar, Diamagnetic

C) Square planar, Diamagnetic Square planar, Paramagnetic

D) Trigonal pyramidal Square pyramidal

• question_answer77) There are no S?S bond in

A) ${{S}_{2}}O_{4}^{2-}$

B) ${{S}_{2}}O_{5}^{2-}$

C) ${{S}_{2}}O_{3}^{2-}$

D) ${{S}_{2}}O_{7}^{2-}$

• question_answer78) The correct order of acid strength

A) $C{{l}_{2}}{{O}_{7}}>S{{O}_{2}}>{{P}_{4}}{{O}_{10}}$

B) $C{{O}_{2}}>{{N}_{2}}{{O}_{5}}>S{{O}_{3}}$

C) $N{{a}_{2}}O>,MgO>A{{l}_{2}}{{O}_{3}}$

D) ${{K}_{2}}O>CaO>MgO$

• question_answer79) Which of the following compound is expected to be coloured?

A) $A{{g}_{2}}S{{O}_{4}}$

B) $Cu{{F}_{2}}$

C) $Mg{{F}_{2}}$

D) CuCI

• question_answer80) Which one of the following exhibits the maximum covalent character?

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

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

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

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

• question_answer81) Which one of the following is paramagnetic? I

A) NO

B) $N{{O}^{+}}$

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

D) ${{N}_{2}}$

• question_answer82) Zr (Z = 40) and Hf (Z = 72) have similar atomic and ionic radii because of

A) both belong to same group

B) diagonal relationship

C) lanthanide contraction

D) having similar chemical properties

• question_answer83) In a square planar complex of the type [Mabcx], the number of geometrical isomers can be

A) no geometrical isomer

B) three

C) two

D) four

• question_answer84) First noble gas compound prepared by Neil Bartlett is

A) $O_{2}^{+}PtF_{6}^{-}$

B) $O_{3}^{+}PtF_{6}^{-}$

C) $X{{e}^{+}}PtF_{6}^{-}$

D) $Xe{{F}_{2}}$

• question_answer85) Holmes signal uses chemical compound

A) calcium carbide

B) calcium phosphide

C) calcium carbide and calcium phosphide

D) calcium carbide and aluminium carbide

• question_answer86) Ultimate product is obtained on heating ${{B}_{2}}{{H}_{6}}$with $N{{H}_{3}}$ is

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

B) ${{(B-N)}_{3}}$

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

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

• question_answer87) Which is least stable compound?

A) $BC{{l}_{3}}$

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

C) $\ln C{{l}_{3}}$

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

• question_answer88) A commercial sample of ${{H}_{2}}{{O}_{2}}$ marked as 100 volume hydrogen peroxide, it means that

A) $1\,mL\,{{H}_{2}}{{O}_{2}}$ will give $100\,mL\,{{O}_{2}}$ at STP

B) 1 L of ${{H}_{2}}{{O}_{2}}$ will give $100\,mL\,{{O}_{2}}$ at STP

C) 1 L of ${{H}_{2}}{{O}_{2}}$ will give 22.4 L ${{O}_{2}}$ at STP

D) 1 mL of ${{H}_{2}}{{O}_{2}}$ will give 1 mole of ${{O}_{2}}$ at STP

A) $N{{a}_{2}}C{{O}_{3}}$ is used in glass industry

B) $KHC{{O}_{3}}$ is acidic salt

C) ${{K}_{2}}C{{O}_{3}}$ can be prepared by Solvay process

D) $N{{a}_{2}}C{{O}_{3}}$ is used for metal refining

• question_answer90) Which of the following facts about the complex $[Cr{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}$ is wrong?

A) The complex is paramagnetic

B) The complex is an outer orbital complex

C) The complex gives white precipitate with silver nitrate

D) The complex involves ${{d}^{2}}s{{p}^{3}}$ hybridisation and is octahedral in shape

• question_answer91) In the given reaction, the compound A is

A)

B)

C)

D)

• question_answer92) What reagent(s) can be used to convert 2 methyl pentan-1-ol into 2-methyl pentanal?

A) $N{{a}_{2}}C{{r}_{2}}{{O}_{7}}$

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

C) $Cr{{O}_{3}}$-pyridine

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

• question_answer93) Which one of the following is most reactive towards nucleophilic substitution reaction?

A)

B)

C)

D)

• question_answer94) Which of the following names does not fit a real name?

A) 3-methyl-3-hexanone

B) 4-methyl-S-hexanone

C) 3-methyl-3-hexanol

D) 2-methyl cyclohexanone

• question_answer95) Major product of the reaction is ${{(C{{H}_{3}})}_{2}}C=C{{H}_{2}}\xrightarrow{ICI}A$

A) 2-chloro-1-iodo-2-methyl propane

B) 1 -chloro-2-iodo-2-methyl propane

C) 1, 2-dichloro-2-methyS propane

D) 1, 2-diiodo-2-methyl propane

• question_answer96) The source of nitrogen in Gabriel synthesis of primary amines is

A) potassium cyanide

B) potassium phthaiimide

C) sodium azide

D) sodium nitrite

• question_answer97) The correct increasing order of basic strength for the following compound is

A) $III<I<II$

B) $III<II<I$

C) $I<II<III$

D) $II<I<III$

• question_answer98) Which of the following reactions involves the formation of a methyl ester from a carboxylic acid?

A) Hell-Volhard-Zeiinsky reaction

B) Hunsdiecker reaction

C) Reaction with ammonia

D) Reaction with diazomethane

• question_answer99) An ether solution of $PhC{{H}_{3}}(I),\,PhN{{H}_{2}}(II)$and $PhOH(III)$ is extracted with aqueous$NaOH$. The ether layer will contain what compound(s) after the extraction?

A) Only III

B) I + II

C) II + III

D) I + III

• question_answer100) Final major product of the following reactions is

A)

B)

C)

D)

• question_answer101) Nistch was able to get strawberries of different shapes by

A) splitting the ovary

B) removing the perianth

C) selectively removing some carpels

D) inserting an alcohol dipped needle into the ovary

A) colchicine treatment

B) X-ray treatment

C) breeding with wild relatives

D) hormone treatment

• question_answer103) Yeast is used for commercial production of

A) methanol

B) ethanol

C) butanol

D) citric acid

• question_answer104) Microbe used as clot buster during myocardial infraction

A) Penicillium notatum

B) Clostridium butyl icum

C) Streptococcus

D) Acetobacter aceti

A) Indian Council of British Nature

B) International Code for Biological Nomenclature

C) International Code for Botanical Nomenclature

D) Indian Code for Biological Nomenclature

• question_answer106) Which pair of plants placed in the family- Solanaceae?

A) Datura and Petunia

B) Datura and Asphodelus

C) Petunia and Sesbania

D) Petunia and Pisum

• question_answer107) Which of the following statements is correct?

A) Species diversity, in general, increases from poles to the equator

B) Conventional taxonomic methods are equally suitable for higher plants and microorganisms

C) Indias share of global species diversity is about 18%.

D) There are about 25000 known species of plants in India

• question_answer109) Which of the following is the largest taxon among plants in terms of the number of species?

A) Algae

B) Mosses

C) Ferns

D) Fungi

• question_answer110) Which of the following processes will be most adversely affected if microorganisms are removed from a forest ecosystem?

A) Solar energy fixation and nutrient cycling

B) Decomposition of organic matter and photosynthesis

C) Nitrogen-fixation and decomposition of organic matter

D) Carbon assimilation and nitrogen-fixation

• question_answer111) Residual, persistent nucellus present in some seeds is known as

A) scutellum

B) perisperm

C) tapetum

D) coleoptile

• question_answer112) Adventitious buds at the leaf notches help to propagate the plant of

A) potato

B) Agave

C) Bryophyllum

D) Cactus

• question_answer113) Gametogenesis refers to the process of

A) fusion of two gametes

B) fusion of two gametangia

C) formation of two types of gametes

D) formation of male gamete only

• question_answer114) Stilt roots are found in

A) Rhizospora

B) maize

C) banyan

D) Colocasia

• question_answer115) In a monocot leaf stomata are present

A) only on abaxial surface

C) on both the surfaces

D) more on abaxial surface

• question_answer116) The inflorescence in which sessile flowers are borne acropetally on an elongated rachis, it is called

A) raceme

B) spike

C) catkin

D) corymb

• question_answer117) Ring-like secondary cell wall thickening is referred to as

A) spiral

B) helical

C) scalariform

D) annular

• question_answer118) Aspergillus niger is used for commercial and industrial production of

A) acetic acid

B) butyric acid

C) citric acid

D) lactic acid

• question_answer119) Statin, a blood-cholesterol lowering agent, is commercially obtained from

A) Trichoderma polysporum

B) Acetobacter aceti

C) Clostridium butyricum

D) Monascus purpureus

A) nitrogen base

B) nucleoside

C) nucleotide

D) amino acid

• question_answer121) That plants could be grown to maturity in a defined nutrient solution was for the first time demonstrated by

A) Priestley

B) Van Sacchs

C) Ingenhausz

D) Van Niel

• question_answer122) In purple and green bacteria, oxygen is not evolved during photosynthesis because hydrogen donor is

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

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

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

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

• question_answer123) In PS-I, the reaction centre chlorophyll a has an absorption peak at

A) 650 nm

B) 660 nm

C) 680 nm

D) 700 nm

• question_answer124) The idea of two pigment systems in light reaction of photosynthesis was given by

A) Arnon

B) Hill

C) Blackman

D) None of these

• question_answer125) In respiration, more than one R.Q. value results from the use of

A) glucose

B) sucrose

C) fat

D) organic acid

• question_answer126) In lactic acid fermentation, the number of ATP formed by the oxidation of NADH is

A) eight

B) six

C) three

D) Nil

• question_answer127) During aerobic respiration, acetyl Co-A is synthesized in

A) cytosol

B) mitochondrial matrix.

C) glyoxysomal matrix

D) perichondrial space

• question_answer128) The cell attaining their maximal size in terms of wall thickening and protoplasmic modification belong to

A) meristematic phase of growth

B) elongation phase of growth

C) maturation phase of growth

D) None of the above

• question_answer129) Spraying sugarcane crop with a plant hormone increases the length of the stem, thus increasing the yield by as much as 20 tonnes per acre. The plant hormone is

A) gibberellin ensymes

B) auxin

C) cytokinin

D) abscisic acid

• question_answer130) The principal function of Golgi apparatus is

A) producing enzymes

B) protein synthesis

C) synthesis of lipids

D) packaging materials

• question_answer131) A scorpioid cyme having all the flowers in the same plane is

A) rhipidium

B) bostryx

C) cincinnus

D) dreponium

• question_answer132) Colletrotrichum is an example of

A) Basidiomycetes

B) Deuteromycetes

C) Ascomycetes

D) Phycomycetes

• question_answer133) A nitrogenous base is linked to the pentose sugar through

A) hydrogen bond

B) glycosidic bond

C) phosphate diester bond

D) peptide bond

• question_answer134) A mechanism that can cause a gene to move from one linkage group to another is

A) translocation

B) inversion

C) crossing-over

D) duplication

• question_answer135) Cell cycle includes the sequence

A) $S,{{G}_{1}},{{G}_{2}},M$

B) $S,M,{{G}_{1}},{{G}_{2}}$

C) ${{G}_{1}},S,{{G}_{2}},M$

D) $M,{{G}_{1}},{{G}_{2}},S$

• question_answer136) When the concentration of the solutes is low in plant cell, absorption of water is

A) retarded

B) increased

C) normal

D) absent

• question_answer137) A citizen group called Friends of the Arcata Marsh (FOAM) basically belongs to

A) Germany

B) USA

D) UK

• question_answer138) Which of the following is an example of alien species invading a new ecosystem resulting in biodiversity losses?

A) Introduction of Nile Perch into Lake Victoria in East Africa

B) Introduction of Water Hyacinth into India

C) Introduction of African Catfish into Indian rivers

D) All of the above

• question_answer139) The prime contaminants in lakes eutrophied by sewage and agricultural wastes are

A) sulphates and phosphates

B) nitrates and sulphates

C) nitrates and phosphates

D) nitrates and carbonates

• question_answer140) The process of nutrient enrichment of water, and subsequent loss of species diversity is referred to as

A) bio concentration

B) bio magnification

C) eutrophication

D) nitrification

• question_answer141) In which cell organelles the genome system is autonomous?

A) Ribosomes and chloroplasts

B) Mitochondria and chloroplasts

C) Mitochondria and ribosomes

D) Golgi bodies and ribosomes

• question_answer142) Who gave the concept that for a double stranded DNA the ratio between A = T and G = C are equal and constant?

A) Watson and Crick

B) Wilkins and Franklin

C) Wilkins and Chargaff

D) Chargaff

• question_answer143) In a dihybrid cross between two heterozygotes AaBb $\times$ AaBb, if we get 3 : 1 ratio among the off springs, the reason for this may be

A) polygenes

C) pleiotropic genes

D) hypostatic genes

• question_answer144) What result Mendel would have got, had he self-pollinated a tall ${{F}_{2}}$ -plant?

A) TT and Tt

B) All Tf

C) AII TT

D) All ff

• question_answer145) Which of the antibiotic is not produced by one of the Monera (Streptomyces)?

A) Erythromycin

B) Penicillin

C) Streptomycin

D) Tetramydn

A) brightly coloured and produce nector

B) colourless

C) inconspicuous

D) odourless

• question_answer147) Which structural level enables the proteins to function as enzymes?

A) Primary

B) Secondary

C) Tertiary

D) Quaternary

• question_answer148) A distinguishing feature of latex cells is that they are

A) single-celled elements with anastomosing (fusing) branches

B) single-celled elements with non anastomosingi branches

C) multi-celled elements with anastomosingi branches

D) multi-celled elements with non anastomosing branches

• question_answer149) An organic non-protein cofactor which is easily separable from the apoenzyme is called

A) prosthetic group

B) coenzyme

C) ailoenzyme

D) All of these

• question_answer150) An immature male gametophyte differs from a mature male gametophyte in that it

A) has not yet left the pollen sac

B) has not yet germinated and its generative cell has not divided into two male gamete

C) is a microspore that has not yet divided by mitosis

D) still consist of microsporocyte

• question_answer151) A stretch of DNA consisting of 10-20 bases is| most appropriately be called as

A) polynucleotide

B) nucleotides

C) nucleosides

D) oligonucleotide

• question_answer152) Which biomolecules other than proteins can be catabolised by humans or apes for the production of uric acid?

A) Carbohydrates

B) Lipids

C) Nucleic acids

D) Vitamins

• question_answer153) The 51 amino acids of insulin are arranged in

A) single polypeptide

B) two polypeptide having 20 and 31 amino acids

C) two polypeptide having 25 and 26 amino acids

D) two polypeptide having 18 and 33 amino acids

• question_answer154) Substrate of an enzyme is

A) the reactant of the reaction catalysed by the enzyme

B) competitive inhibitor of the enzyme

C) uncompetitive inhibitor of the enzyme

D) prosthetic group of the enzyme

• question_answer155) Which of the following statements regarding enzymes is not true?

A) Enzymes lower the activation energy of a reaction

B) Enzymes speed up the attainment of equilibrium of the reaction

C) Enzyme change the value of equilibrium constant of the reaction

D) All of the above

• question_answer156) Mitochondrial porins are located in

A) the outer membrane

B) the inner membrane

C) inter-membrane space

D) Both outer and inner membranes

• question_answer157) Of the total number of genes estimated in human genome, nearly 10 percent are contained in

A) chromosome 11

B) chromosome 21

C) Y-chromosome

D) chromosome 1

A) secondary structure

B) tertiary structure

C) quaternary structure

D) All of the above

• question_answer159) Which of the following is correct?

A) Population change = (Birth + immigration) - (death + emigration)

B) Population change = (Birth + immigration) + (death + emigration)

C) Population change = (Birth + emigration) + (death - inmigration)

D) Population change = (Birth - immigration) - (death + emigration)

• question_answer160) In order to lessen the suffering of phenylketonurics their diet should have

A) no phenylalanine and no tyrosine

B) low phenylalanine and normal requirement of tyrosine

C) normal recommended amount of phenylalanine

D) normal recommended amount of both phenylalanine and tyrosine

• question_answer161) The technique of DNA fingerprinting relies on

A) repetitive DNA

B) mini-satellite DNA

C) Both (a) and (b)

D) None of these

• question_answer162) During polynucleotide synthesis by the following enzymes, in which case elongation occurs in $5\to 3$ direction?

A) DNA polymerase

B) RNA polymerase

C) Reverse transcriptase

D) All of the above

• question_answer163) Which of the following types of RNA act as adapter molecule

A) RNA

B) rRNA

C) mRNA

D) pre-mRNA

• question_answer164) In DNA fingerprinting, the process of DNA hybridisation with the help of specific DNA probe is described as

A) Western blotting

B) Northern blotting

C) Southern blotting

D) All of the above

• question_answer165) In order to induce the bacterial uptake of plasmids, the bacteria are made competent by first treating with

A) sodium chloride

B) potassium chloride

C) magnesium chloride

D) calcium chloride

• question_answer166) HIV, responsible for AIDS in human is a

A) ss DNA virus

B) ds DNA virus

C) ss RNA virus

D) ds RNA virus

• question_answer167) Heterogeneous nuclear RNA (hnRNA) is converted to wRNA by

A) splicing

B) capping

C) tailing .

D) All of the above

• question_answer168) The immunoglobulin disulfides do not join

A) two heavy chains

B) light chains with heavy chains

C) two light chains

D) All of the above

• question_answer169) Which of the following techniques is most widely employed to check the progress of a restriction enzyme digestion

A) Agarose gel electrophoresis

B) Centrifugation

C) Polyacrylamide gel electrophoresis

D) PCR

• question_answer170) The sticky ends on each of the two strands of a DNA generated by treatment with restriction enzymes facilitate the action of enzyme

A) DNA ligase

B) endonuclease

C) exonuclease

D) DNA polymerase

• question_answer171) Protein encoded by gene cry I Ab controls the infestation of which of the following insects

A) cotton bollworm

B) Anopheles mosquito

C) corn borer

D) Aedes mosquito

• question_answer172) The first antibody to appear in the serum following stimulation by antigen is

A) IgM

B) IgG

C) IgA

D) IgE

• question_answer173) Which of the following components are involved in allergic reaction

A) IgE and mast cells

B) IgG and mast cells

C) IgA and mast cells

D) IgG and basophiles

• question_answer174) The location where B-lymphocytes differentiate and mature is in the

A) bone marrow

B) bursa of fabric us

C) Both (a) and (b)

D) thymus

• question_answer175) My asthenia gravis is an example of

A) viral diseases

B) immune deficient diseases

C) auto-immune diseases

D) allergic reactions

A) one name given by two taxonomists

B) two names, the Latinized, other of a person

C) two names, one scientific, other local

D) two word names, the first indicates genus, and other species

• question_answer177) Which of the following are not eukaryotes?

A) Monera

B) Protista

C) Animals

D) Plants

• question_answer178) Name of a disease caused by a bacterium

A) plague

B) mumps

C) dengue

D) sleeping sickness

• question_answer179) DPT vaccine, a combination vaccine, is effective in humans against

A) Diabetes, Polio and Tetanus

B) Diphtheria, Plague and Tetanus

C) Diphtheria, Pertussis and Typhoid

D) Diphtheria, Pertussis and Tetanus

• question_answer180) The pathogen Haemophilus influenzae is responsible for the disease

A) influenza

B) pneumonia

C) plague

D) diphtheria

• question_answer181) Ringworm, a common infectious disease in man causing dry scaly lesions on the skin and scalp, is caused by

A) bacteria

B) roundworms

C) filarial worms

D) fungi

• question_answer182) The sound producing organ of bird is called as

A) syrinx

B) larynx

C) trachea

D) glottis

• question_answer183) According to IUCN Red list, during the last two decades, the maximum increase in the number of threatened species is among

A) amphibians

B) reptiles

C) birds

D) mammals

• question_answer184) Appropriate term for the grafting of tissues/organs between the individuals of different species is known as

A) allograft

B) isograft

C) xenograft

D) transgraft

• question_answer185) Sexual reproduction does not occur in

A) Ascomycetes

B) Deuteromycetes

C) Basidiomycetes

D) Phycomycetes

• question_answer186) A type of metamorphosis in insects with four developmental stages, i.e., eggs, larva, pupa and adult is

A) hemimetabolous

B) paurometabolous

C) holometabolous

D) ametabolous

• question_answer187) Which of the following genetic code has a dual functions-coding Met and acts as initiator codon

A) UAA

B) AUG

C) UUU

D) UAG

• question_answer188) The process of conversion of nitrogen to ammonia by the microbes is described as

A) nitrification

B) denitrification

C) nitrogen-fixation

D) Habers process

• question_answer189) The type of transport taking place across the bio-membranes without the help of proteins is

A) facilitated diffusion

B) active transport

C) simple diffusion

D) diffusion via symport

• question_answer190) 70 S ribosomes occur in

A) bacteria

B) mitochondria

C) chloroplasts

D) All of the above

• question_answer191) Which of the following are not ureotelic?

A) Mammals

B) Terrestrial amphibians

C) Aquatic insects

D) Birds

• question_answer192) The hissardale is a breed of sheep developed by crossing between

A) Bikaneri ewes and Marino rams

B) Marino ewes and Bikaneri rams

C) Deccani ewes and Bikaneri rams

D) Marino ewes and Apennine rams

• question_answer193) In habitual alcohol drinkers liver gets damaged because of

A) accumulation of excess glycogen

B) accumulation of excess fat

C) excess detoxification

D) excess deamination

• question_answer194) Which is the hormonal method of birth control?

A) Pill

B) IUD

C) Vasectomy

D) Femidom

• question_answer195) Sex determination by chromosomal difference in man and Drosophila is by mechanism called

A) XX-XY

B) XX-XO

C) ZZ-ZW

D) Both (a) and (b)

• question_answer196) Which of the following set of syndromes show 47 chromosomes in their genetic make up

A) Downs syndrome, Pataus syndrome, Edwards syndrome

B) Turners syndrome, Edwards syndrome, Klinefelters syndrome

C) Klinefelters syndrome, Turners syndrome, Edwards syndrome

D) All of the above

• question_answer197) The following is/are removed during hemodialysis

A) urea

B) glucose

C) amino acid

D) All of these

• question_answer198) Genetic disorder hemophilia is characterized by excessive loss of blood. Which of the following statement is not true in relation to this disease?

A) It is an autosomal disease

B) It is a X-linked disease

C) Any of the factor VIII or IX may be absent

D) It is a lethal disease

• question_answer199) Observe the two structural formulae shown below are

A) isomers

B) epimers

C) anomers

D) All of these

• question_answer200) Fish proteins are considered nutritionally superior to most vegetable proteins because they are rich in

A) all the 20 amino acids

B) essential amino acids

C) peptide bonds

D) polypeptides