Solved papers for AMU Medical AMU Solved Paper-2001

AMU Solved Paper-2001 Total Questions - 200

1) A 100 turns coil kept in a magnetic field \[\overset{\to }{\mathop{\mathbf{B}}}\,=\]\[0.5\text{Wb}/{{\text{m}}^{\text{2}}},\] carries a current of 1 A. The torque acting on the coil is

A)

1.125 N-m

B)

5.25 N-m

C)

6.25 N-m

D)

10 N-m

View Answer
2) The ionisation potential of hydrogen atom is 13.6 V. The energy needed to ionise a hydrogen atom which is in its n = 2 state is about

A)

3.4 eV

B)

1.5 eV

C)

10.2 eV

D)

13.6 eV

View Answer
3) Consider the following processes (i) Electrical oscillation (ii) Rapid deceleration of fast electrons (iii)Atomic transition Which of these are likely to produce visible light ?

A)

(iii) only

B)

(ii) and (iii)

C)

(i) and (iii)

D)

(i), (ii) and (iii)

View Answer
4) In a series L-C circuit L = 0.405 H and\[\text{C}=\text{25}\,\mu \text{F}.\]The resistance R is zero. The frequency of resonance is

A)

30 Hz

B)

25 Hz

C)

50 Hz

D)

20 Hz

View Answer
5) The impedance (Z) of a circuit of frequency 50 Hz containing \[\text{R}=\text{1}0\,\Omega ,\text{C}=\text{5}0\text{ }\mu \text{F}\]in series is

A)

64.5\[\Omega \]

B)

54.5\[\Omega \]

C)

zero

D)

infinity

View Answer
6) Two electron are separated by a distance of 1 Å. The Coulombs force between them will be

A)

\[\text{2}.\text{3}\times \text{1}{{0}^{-\text{8}}}\text{ N}\]

B)

\[\text{4}.\text{6}\times \text{1}{{0}^{-\text{8}}}\text{ N}\]

C)

\[\text{1}.\text{15}\times \text{1}{{0}^{-8}}\text{ N}\]

D)

None of these

View Answer
7) A thin oil layer floats on water. A ray of light making an angle of incidence \[40{}^\circ \] shines on oil layer. The angle of refraction of light ray in water is \[(Given,{{\mu }_{oil}}=1.45,{{\mu }_{Water}}=1.33)\]

A)

\[28.9{}^\circ \]

B)

\[26.8{}^\circ \]

C)

\[44.5{}^\circ \]

D)

\[36.1{}^\circ \]

View Answer
8) The refractive indices of the material of a lens for violet and red colours are respectively 1.56 and 1.54. If the focal length of the lens for violet light is 40 cm, then focal length for red colour is

A)

41.48 cm

B)

20.25 cm

C)

15.3 cm

D)

2.8 cm

View Answer
9) A drop of water is placed on a glass plate. A double convex lens having radius of curvature of each surface 20 cm is placed on it. The focal length of water lens \[\left( \mu =\frac{4}{3} \right),\] will be

A)

0.20 m

B)

-0.60 m

C)

0.30 m

D)

0.40 m

View Answer
10) A person who can see things most clearly at a distance of 10 cm requires spectacles to enable him to see clearly things at a distance of 30 cm. The focal length of the spectacles is

A)

10 cm

B)

18 cm

C)

30 cm

D)

15 cm

View Answer
11) A force of \[\text{1}{{\text{0}}^{\text{6}}}\text{ N}/{{\text{m}}^{\text{2}}}\]is required for breaking a material. If the density of the material is \[\text{3}\times \text{1}{{0}^{\text{3}}}\text{ kg}/{{\text{m}}^{\text{3}}},\] then what should be the length of the wire made of material, so that it breaks by its own weight?

A)

17 m

B)

34 m

C)

26 m

D)

23 m

View Answer
12) The surface tension of water is \[\text{7}\times \text{1}{{0}^{-\text{2}}}\text{ N}/\text{m}.\] The weight of water supported by surface tension in a capillary tube of 0.1 mm radius, will be

A)

\[\text{44}\times \text{1}{{0}^{-\text{6}}}\text{ N}\]

B)

\[\text{22}\times \text{1}{{0}^{-\text{6}}}\text{ N}\]

C)

\[\text{33}\times \text{1}{{0}^{-\text{6}}}\text{ N}\]

D)

None of these

View Answer
13) A rain drop of radius 0.3 mm has a terminal velocity of 1 m/s in air. The viscosity of air is \[\text{18}\times \text{1}{{0}^{-5}}\] poise. The viscous force on the drop is

A)

\[16.95\times 10\]

B)

\[1.695\times {{10}^{-2}}\]

C)

\[\text{1}.0\text{17}\times \text{1}{{0}^{-\text{11}}}\text{ N}\]

D)

\[\text{1}0\text{1}.\text{73}\times \text{1}{{0}^{-\text{9}}}\text{ N}\]

View Answer
14) When temperature is increased from \[0{}^\circ C\] to \[273{}^\circ C\], in what ratio the average kinetic energy of molecules change ?

A)

1

B)

3

C)

4

D)

2

View Answer
15) The root mean square speed of hydrogen molecules of an ideal hydrogen gas kept in a gas chamber at 0°C is 3180 m/s. The pressure of hydrogen gas will be (density of hydrogen gas \[=\text{8}.\text{99}\times \text{1}{{0}^{-\text{2}}}\text{ kg}/{{\text{m}}^{\text{3}}}\]and 1 atm \[=\text{ 1}.0\text{1}\times \text{1}{{\text{0}}^{\text{5}}}\text{ N}/{{\text{m}}^{\text{2}}})\]

A)

3.0 atm

B)

2.0 atm

C)

1.0 atm

D)

1.5 atm

View Answer
16) In a thermodynamic process pressure of a fixed mass of a gas is changed in such a manner that the gas releases 20 J of heat and 8 J of work is done on the gas, if the initial internal energy of the gas was 30 J. The final internal energy will be

A)

36 J

B)

15 J

C)

18 J

D)

9 J

View Answer
17) A Camot engine working between 300 K and 600 K has work output of 800 J/cycle. The amount of heat energy supplied to the engine from source per cycle will be

A)

800

B)

1600

C)

1200

D)

900

View Answer
18) If 1 mole of a monoatomic gas \[y=\frac{5}{3}\]is mixed with 1 mole of diatomic gas \[y=\frac{7}{5}.\]The value of \[y\] for the mixture will be

A)

3

B)

1.5

C)

1.8

D)

2

View Answer
19) Calculate the energy radiated per minute the filament of an incandescent lamp at 2000 K. If the surface area is \[\text{5}\times \text{1}{{0}^{-5}}\text{ }{{\text{m}}^{\text{2}}}\]and its relative emittance is \[0.\text{85},\sigma =\text{ 5}.\text{7}\times {{10}^{-8}}\] MKS units

A)

1230 J

B)

2225 J

C)

2115 J

D)

  2315 J

View Answer
20) An object is cooled from \[75{}^\circ C\] to \[65{}^\circ C\] in 2 min in a room at \[30{}^\circ C\] the time taken to cool the same object from \[55{}^\circ C\] to \[45{}^\circ C\] in the same room (in min) is

A)

7

B)

6

C)

5

D)

4

View Answer
21) The magnetic flux density B at a distance - from a long straight wire carrying a steac current varies with r as shown in figure

A)

B)

C)

D)

View Answer
22) A satellite of mass m goes round the earth along a circular path of radius r, let Mg is the mass of the earth and Rg its radius. Then the linear speed of the satellite depends

A)

\[{{M}_{e}}\]

B)

\[{{M}_{e}}\] only

C)

\[\mu ,{{\mu }_{e}},V\]

D)

\[{{M}_{e}},{{R}_{e}}\]and \[r\]

View Answer
23) The equivalent capacitance in the given circuit is

A)

\[\text{3}\mu \text{F}\]

B)

\[\text{1}.\text{5 }\mu \text{f}\]

C)

\[\text{2}\mu \text{F}\]

D)

\[1\mu \text{F}\]

View Answer
24) Iron is ferromagnetic

A)

below \[770{}^\circ C\]

B)

above \[770{}^\circ C\]

C)

at NTP only

D)

at all temperature

View Answer
25) The component waves producing a stationary wave have amplitude, frequency and velocity are respectively 8 cm, 30 Hz and 180 cm/s. The wavelength of the wave is

A)

3 cm

B)

6 cm

C)

8 cm

D)

5 cm

View Answer
26) Which one of the following is the graph between frequency v of the incident radiation and stopping potential?

A)

B)

C)

D)

View Answer
27) Which transition emits light of lower frequency ?

A)

\[{{\text{n}}_{\text{1}}}=\text{ 6 to }{{\text{n}}_{2}}=\text{2}\]

B)

\[{{\text{n}}_{1}}=\text{6 to }{{\text{n}}_{2}}=1\]

C)

\[{{\text{n}}_{\text{1}}}=\text{2 to }{{\text{n}}_{2}}=\text{6}\]

D)

\[{{\text{n}}_{\text{1}}}=1\text{ to }{{\text{n}}_{2}}=2\]

View Answer
28) Which one of the following is the weakest force ?

A)

Electrostatic force

B)

Nuclear force

C)

Electromagnetic force

D)

Gravitational force

View Answer
29) A ball of mass m travelling with a certain volecity has a kinetic energy KE. Then the de-Broglie wavelength associated with the ball is

A)

it is only associated with atomic particles

B)

\[\frac{h}{2KEm}\]

C)

\[\sqrt{\frac{h}{2KEm}}\]

D)

\[\frac{h}{\sqrt{2KEm}}\]

View Answer
30) Work function of three metals A, B, C are 4.5 eV, 4.3 eV, 3.5 eV respectively. If a light of wavelength \[4000\text{ }\overset{\text{o}}{\mathop{\text{A}}}\,\] is incident on the metals, then

A)

photoelectrons emitted from C

B)

photoelectrons are emitted from A

C)

photoelectrons emitted from B

D)

photoelectrons emitted from all the surfaces

View Answer
31) The time period of a body suspended by a spring is T. The new time period when the spring is cut into two equal parts and body is suspended by one part is

A)

\[\sqrt{2}T\]

B)

\[\frac{T}{\sqrt{2}}\]

C)

\[\frac{T}{\sqrt{3}}\]

D)

\[\sqrt{3}T\]

View Answer
32) Which of the following distance-time graph represents one dimensions at uniform motion?

A)

B)

C)

D)

View Answer
33) Which logic gate is represented by following diagram ?

A)

XOR

B)

NOR

C)

OR

D)

AND

View Answer
34) A 220 V, 50 Hz AC source is connected to an inductance of 0.2 H and resistance of 20 tl in series. The current in the circuit is

A)

3.33 A

B)

33.3 A

C)

10 A

D)

5 A

View Answer
35) In the diagrams (i) to (iv), variation of volume by changing pressure is shown. A gas is taken along the pathABCDA. The change in internal energy of the gas will be

A)

positive in all the cases (i) to (iv)

B)

positive in cases (i), (ii) and (iii) but zero in case (iv)

C)

negative in cases (i), (ii) and (iii) but zero in case (iv)

D)

zero in all the four cases

View Answer
36) An ideal monoatomic gas is taken round the cycle ABCDA as shown in the figure. The work done during the cycle is

A)

zero

B)

\[\frac{pV}{2}\]

C)

\[2pV\]

D)

\[pV\]

View Answer
37) Which one of the following does not support the wave nature of light ?

A)

Photoelectric effect

B)

Polarisation

C)

Diffraction

D)

Interference

View Answer
38) The value of current I in the circuit shown in the

A)

0.2 A

B)

0.8 A

C)

1.5 A

D)

2.4 A

View Answer
39) A toy car travels in a horizontal circle of radius 2a, kept on the track by a radial elastic string of unstretched length a. The period of rotation is T. Now the car is speeded up until it is moving in a circle of radius 3a. Assuming that the string obeys Hookes law then the new period will be

A)

\[\sqrt{\frac{4}{3}}T\]

B)

\[\frac{{{3}^{2}}}{{{4}^{2}}}T\]

C)

\[\frac{\sqrt{3}}{2}T\]

D)

\[\frac{3}{4}T\]

View Answer
40) We have a galvanometer of resistance 25 n. It is shunted by a 2.5 n wire, the part of total current that flows through the galvanometer is given as

A)

\[\frac{{{I}_{g}}}{I}=\frac{4}{11}\]

B)

\[\frac{{{I}_{g}}}{I}=\frac{3}{11}\]

C)

\[\frac{{{I}_{g}}}{I}=\frac{2}{11}\]

D)

\[\frac{{{I}_{g}}}{I}=\frac{1}{11}\]

View Answer
41) When the key is pressed at time t = 0 then which of the following statement about the current I on the resistor AB of the given circuit is true ?

A)

at t = 0, \[I\]= 2 mA and with time it goes to 1mA

B)

J oscillates between 1 mA and 2 mA

C)

J = 2 mA at all t

D)

I = 1 mA at all t

View Answer
42) Eight drops of equal size are falling through aL- with steady velocity of 10 cm/s. If the drop; coalesce, what could be its terminal velocity

A)

40 cm/s

B)

20 cm/s

C)

25 cm/s

D)

50 cm/s

View Answer
43) Light of two different frequency whose photon have energies 1 eV and 2.5 eV respectively successively illuminate a metal of work function 0.5 eV. The ratio of maximum speed of the emitted electron will be

A)

1 : 1

B)

1 : 2

C)

1 : 4

D)

1 : 5

View Answer
44) If the pitch of the sound of a source appears to drop by 10% to a moving person, then the velocity of motion is

A)

20 m/s

B)

33 m/s

C)

40 m/s

D)

50 m/s

View Answer
45) By opening the door of a refrigerator which is inside a room, the temperature of room

A)

first decreases then increases

B)

remains unchanged

C)

increases

D)

decreases

View Answer
46) A vessel has 6 g of oxygen of pressure p and temperature 400 K, a small hole is made in it so that oxygen leaks out. How much oxygen leaks out, if the final pressure isp/2 and temperature is 300 K ?

A)

3 g

B)

2 g

C)

4 g

D)

5 g

View Answer
47) The maximum acceleration of the body executing SHM is Og and maximum velocity is vq the amplitude is given by

A)

\[\frac{1}{{{a}_{0}}{{v}_{0}}}\]

B)

\[\frac{{{a}_{0}}^{2}}{{{v}_{0}}}\]

C)

\[{{v}_{a}}{{a}_{0}}\]

D)

\[\frac{{{v}_{a}}^{2}}{{{a}_{0}}}\]

View Answer
48) Different voltage are applied across a p-n junction and the currents are measured for each value. Which of the following graphs is obtained between voltage V and current ?

A)

B)

C)

D)

View Answer
49) Which of the following graph represents the variation of activity N of a radioactive substance with time t ?

A)

B)

C)

D)

View Answer
50) Which one of the graphs represents the variation of electric field strength \[E\] with distance \[r\]from the centre of a uniformly charged conducting sphere ?

A)

B)

C)

D)

View Answer
51) Acetophenone \[(Ph-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}})\] is prepared in the laboratory by

A)

B)

C)

D)

\[Ph-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-Cl+C{{H}_{4}}\xrightarrow{AlC{{l}_{3}}}\]

View Answer
52) The energy of hydrogen n atom in its ground state is -13.6 eV. The energy of the level corresponding to the quantum number n = 5 is

A)

-5.40 eV

B)

-0.54 eV

C)

-2.72 eV

D)

-0.85 eV

View Answer
53) Which of the following species is diamagnetic?

A)

\[{{O}_{2}}\]

B)

\[{{O}_{2}}^{2-}\]

C)

\[O_{2}^{-}\]

D)

\[{{O}_{2}}^{+}\]

View Answer
54) The rate of diffusion of a gas is proportional to

A)

\[\frac{p}{d}\]

B)

\[\sqrt{\frac{p}{d}}\]

C)

\[\frac{pV}{M}\]

D)

\[\sqrt{\frac{pV}{d}}\]

View Answer
55) Which of the following hydrides is electron deficient molecule?

A)

NaH

B)

\[C{{H}_{4}}\]

C)

\[Ca{{H}_{2}}\]

D)

\[{{B}_{2}}{{H}_{6}}\]

View Answer
56) Oxidation number of Cr in \[Cr{{O}_{6}}\] is

A)

+8

B)

+6

C)

+4

D)

+10

View Answer
57) Which of the following solutions boils at the highest temperature?

A)

0.1 M NaCI

B)

0.1 M urea

C)

0.1 M \[BaC{{l}_{2}}\]

D)

0.1 M glucose

View Answer
58) For treatment of cancerous tumours, the radio isotope used was

A)

U - 235

B)

Co - 60

C)

P - 32

D)

Pu - 239

View Answer
59) The main structural feature of protein is

A)

the ester linkage

B)

the ether linkage

C)

the peptide linkage

D)

All of the above

View Answer
60) Which one of the following acids exhibits optical activity?

A)

Lactic acid

B)

Benzoic acid

C)

Oxalic acid

D)

Acetic acid

View Answer
61) What is the product B in the following reaction sequence\[C{{H}_{3}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}}\xrightarrow{KCN/{{H}_{2}}S{{O}_{4}}}A\xrightarrow{LiAl{{H}_{4}}}B?\]

A)

\[C{{H}_{3}}-\overset{\begin{smallmatrix} H \\ | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C}}\,}}\,-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,H-COOH\]

B)

\[C{{H}_{3}}-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C}}\,}}\,-COOH\]

C)

\[C{{H}_{3}}-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{2}}NH\]

D)

\[C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,N-CN\]

View Answer
62) Which one of the following acids will undergo easy thermal decarboxylation?

A)

\[C{{H}_{3}}.\,C{{H}_{2}}COOH\]

B)

\[HOOCC{{H}_{2}}COOH\]

C)

\[C{{H}_{2}}COOH\]

D)

\[{{C}_{6}}{{H}_{5}}COOH\]

View Answer
63) The gas which combine with haemoglobin to damage its oxygen carrying capacity is

A)

\[C{{O}_{2}}(g)\]

B)

\[{{O}_{2}}(g)\]

C)

\[CO\,(g)\]

D)

\[{{N}_{2}}(g)\]

View Answer
64) Which one of the following is obtained when acetone is treated with bleaching powder?

A)

\[C{{H}_{3}}Cl\]

B)

\[C{{H}_{2}}C{{l}_{2}}\]

C)

\[CHC{{l}_{3}}\]

D)

\[CC{{l}_{4}}\]

View Answer
65) Benzyl alcohol is obtained from Benzaldehyde by

A)

Fittig reaction

B)

reduction with \[LiAl{{H}_{4}}\]

C)

Cannizaros reaction

D)

Both (a) and (b)

View Answer
66) An isocyanide on hydrolysis gives

A)

n-substituted amide

B)

\[{{1}^{o}}\]-amine and formic acid

C)

carboxylic acid and ammonia

D)

an amide

View Answer
67) \[C{{H}_{3}}CH=CHCHO\] is oxidised to \[C{{H}_{3}}CH=CHCOOH\] using

A)

osmium tetraoxide

B)

selenium dioxide

C)

ammoniacal silver nitrate

D)

alkaline permanganate

View Answer
68) The reagent with which both acetaldehyde and acetone react easily is

A)

Schiff s reagent

B)

Tollens reagent

C)

Grignard reagent

D)

Fehling solution

View Answer
69) The reaction sequence\[C{{H}_{3}}C{{H}_{2}}COOH\xrightarrow{SOC{{l}_{2}}}A\]\[\xrightarrow{Pd/BaS{{O}_{4}}}B\xrightarrow{HOC{{H}_{2}}C{{H}_{2}}OH}C\]C is most likely to be

A)

B)

C)

\[C{{H}_{3}}-C{{H}_{2}}-CHO\]

D)

View Answer
70) When phenol is heated with KOH and chloroform, it forms

A)

salicylaldehyde

B)

benzoic acid

C)

potassium phenolate

D)

salicyclic acid

View Answer
71) 3-methyl-2-butanol on treatment with \[HCl\]gives predominantly

A)

2-chloro-3-methyl butane

B)

2, 2-dimethyl pentane

C)

2-chloro-2-methyl butane

D)

None of the above

View Answer
72) Percentage composition of an organic compound is as follows\[C=10.06,\,\,\,\,H=0.84,\,\,\,Cl=89.10\] Which of the following correspond to its molecular formula if the vapour density is 60.0?

A)

\[C{{H}_{3}}Cl\]

B)

\[CHC{{l}_{3}}\]

C)

\[C{{H}_{2}}C{{l}_{2}}\]

D)

None of these

View Answer
73) In the second group of qualitative analysis, \[{{H}_{2}}S\] is passed through a solution acidified with \[HCl\] in order to

A)

increase the concentration of \[{{S}^{2-}}\]ions

B)

limit the concentration of \[{{S}^{2-}}\]ions

C)

add the \[C{{l}^{-}}\] ions

D)

increase the solubility of \[{{H}_{2}}S\]

View Answer
74) Synthetic detergents are more effective in hard water than soaps because

A)

they are non-ionic

B)

their \[C{{a}^{2+}}\] and \[M{{g}^{2+}}\] salts are insoluble in water

C)

their \[C{{a}^{2+}}\] and \[M{{g}^{2+}}\] salts are water soluble

D)

they are highly soluble in water

View Answer
75) \[\underset{sucrose}{\mathop{{{C}_{12}}{{H}_{22}}{{O}_{11}}}}\,(s)+12{{O}_{2}}\xrightarrow{{}}12C{{O}_{2}}(g)\]\[+11{{H}_{2}}O(l)\]                \[\Delta H=-5.65\times {{10}^{3}}\,kJ\] Complete combustion of 1.00 kg sucrose is done, heat evolved will be

A)

\[+3.51\times {{10}^{5}}kJ\]

B)

\[+7.38\times {{10}^{5}}kJ\]

C)

\[+5.25\times {{10}^{3}}kJ\]

D)

\[+1.65\times {{10}^{4}}kJ\]

View Answer
76) Atoms or ion missing from normal lattice point creating a vacancy due to

A)

Frenkel defect

B)

mass defect

C)

Schottky defect

D)

interstitial defect

View Answer
77) At constant T and p which one of the following statements is correct for the reaction? \[CO(g)+\frac{1}{2}{{O}_{2}}(g)\xrightarrow{{}}C{{O}_{2}}(g)\]

A)

\[\Delta H>\Delta E\]

B)

\[\Delta H<\Delta E\]

C)

\[\Delta H=\Delta E\]

D)

\[\Delta H\] is independent of physical state of reactants

View Answer
78) A gas occupies 2 L at STP. It is provided 300 J heat so that its volume becomes 2.5 L at 1 arm. Calculate the change in internal energy

A)

352.49 J

B)

849.35 J

C)

249.35 J

D)

302.98 J

View Answer
79) The isotope \[y{{A}^{x}}\] undergoes a series of ma and \[n\beta \] disintegrations to form a stable isotope \[{{y}_{-10}}{{B}^{x-32}}\]. The value of m and n are

A)

5 and 8

B)

6 and 8

C)

8 and 6

D)

8 and 10

View Answer
80) The activity of a radioactive element falls to \[\left( \frac{1}{32} \right)\] of its original value in 50 days. The \[{{t}_{1/2}}\] of the substance is

A)

20 days

B)

15 days

C)

10 days

D)

5 days

View Answer
81) If the equilibrium concentration of A is doubled in the following equilibrium \[A{{B}_{2}}(s)A(g)+{{B}_{2}}(g)\]the equilibrium concentration of \[{{B}_{2}}\] would be

A)

one fourth of initial concentration

B)

half of the initial concentration

C)

doubled

D)

same as initial concentration

View Answer
82) The half-life of a radioactive isotope is 3 h. If the initial mass of the isotope was 300 g, the mass which remains undecayed in 18 h would be

A)

2.34 g

B)

1.17 g

C)

9.36 g

D)

4.68 g

View Answer
83) At \[{{298}^{o}}K\] standard reduction potential of half reduction reactions are given below, which of the following is the best suited to be used as anode?

A)

\[2{{H}^{1+}}=2{{e}^{-}}\xrightarrow{{}}{{H}_{2}}(g)\,(+0.000)\]

B)

\[Z{{n}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Zn(s)\,(-0.762)\]

C)

\[F{{e}^{3+}}+{{e}^{-}}\xrightarrow{{}}F{{e}^{2+}}(s)\,\,(-0.44)\]

D)

\[C{{r}^{2+}}+2{{e}^{-}}\xrightarrow{{}}Cr(s)\,\,(-0.540)\]

View Answer
84) Which of the following reactions occurs at the cathode?

A)

\[S{{n}^{2+}}\xrightarrow{{}}S{{n}^{4+}}+2{{e}^{-}}\]

B)

\[A{{g}^{+}}+\,\,{{e}^{-}}\xrightarrow{{}}Ag\]

C)

\[Zn\xrightarrow{{}}Z{{n}^{2+}}+2{{e}^{-}}\]

D)

\[2O{{H}^{-}}\xrightarrow{{}}{{H}_{2}}O+\frac{1}{2}{{O}_{2}}+2{{e}^{-}}\]

View Answer
85) To deposit 0.634 g of copper by electrolysis of aqueous cupric sulphate solution, the amount of electricity required (in coulombs) is

A)

1930

B)

3960

C)

4825

D)

9650

View Answer
86) Some of the polar crystal when heated produce electric current. This phenomena is termed as

A)

piezoelectric effect

B)

anti-ferroelectric effect

C)

ferroelectric effect

D)

Pyro electric effect

View Answer
87) Pick the correct name of \[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}\]

A)

chloropentammine cobalt (II) chloride

B)

pentammine chloro cobalt (III) chloride

C)

chloropentammine cobalt (III)

D)

pentammine cobalt (III) chloride

View Answer
88) Which one of the following statements concerning lanthanides elements is false?

A)

Most characteristic oxidation state of lanthanides elements is +3

B)

All lanthanides are metals

C)

The ionic radii of trivalent lanthanide steadily increase with increase in atomic number

D)

Lanthanides are separated from one another by ion exchange methods

View Answer
89) Which has maximum paramagnetic nature?

A)

\[[Fe{{(CN)}_{6}}{{[}^{4-}}\]

B)

\[{{[Cu{{({{H}_{2}}O)}_{4}}]}^{2+}}\]

C)

\[{{[Zn{{(N{{H}_{3}})}_{4}}]}^{2+}}\]

D)

\[{{[Mn{{({{H}_{2}}O)}_{6}}]}^{2+}}\]

View Answer
90) The oxidation state of Ni in Ni \[{{(CO)}_{4}}\]is

A)

zero

B)

-2

C)

+2

D)

+4

View Answer
91) The number of moles of \[KMn{{O}_{4}}\] that will be needed to react completely with one mole of ferrous oxalate in acidic solution is

A)

4/5

B)

3/5

C)

2/5

D)

1

View Answer
92) Bronze is an alloy of

A)

copper, zinc and nickel

B)

copper, zinc

C)

copper, zinc and tin

D)

copper and tin

View Answer
93) Aluminium hydroxide is soluble in excess of sodium hydroxide forming the ion

A)

\[Al{{O}_{3}}^{-}\]

B)

\[Al{{O}_{2}}^{3+}\]

C)

\[Al{{O}_{2}}^{3-}\]

D)

\[Al{{O}_{2}}^{-}\]

View Answer
94) Identify the reaction not feasible among the following

A)

\[2NaOH\xrightarrow{\Delta }N{{a}_{2}}O+{{H}_{2}}O\]

B)

\[2LiOH\xrightarrow{\Delta }L{{i}_{2}}O+{{H}_{2}}O\]

C)

\[MgC{{O}_{3}}\xrightarrow{\Delta }MgO+C{{O}_{2}}\]

D)

All of the above

View Answer
95) In the qualitative analysis of nitrate in ring test a brown ring is formed due to the formation of

A)

                \[{{N}_{2}}O\,.\,FeS{{O}_{4}}\]

B)

                \[FeS{{O}_{4}}NO\]

C)

\[N{{O}_{2}}\]

D)

\[FeS{{O}_{4}}N{{O}_{2}}\]

View Answer
96) An element having electronic configuration \[1{{s}^{2}},2{{s}^{2}},2{{p}^{6}},3{{s}^{2}}3{{p}^{1}}\] will form

A)

neutral oxide

B)

acidic oxide

C)

basic oxide

D)

amphoteric oxide

View Answer
97) Allylic bromination is carried out by

A)

n-bromosuccinimide

B)

\[B{{r}_{2}}/C{{S}_{2}}\]

C)

\[HBr/{{H}_{2}}{{O}_{2}}\]

D)

\[HOBr\]

View Answer
98) MO configuration of He is

A)

\[{{(\sigma 1s)}^{2}},{{(\overset{*}{\mathop{\sigma }}\,1s)}^{2}},{{(\sigma 2s)}^{1}}\]

B)

\[{{(\sigma 1s)}^{2}},{{(\overset{*}{\mathop{\sigma }}\,1s)}^{2}},{{(\overset{*}{\mathop{\sigma }}\,2s)}^{1}}\]

C)

\[{{(\sigma 1s)}^{2}},{{(\overset{*}{\mathop{\sigma }}\,1s)}^{2}},{{(\sigma 2s)}^{2}}\]

D)

\[{{(\sigma 1s)}^{2}},{{(\overset{*}{\mathop{\sigma }}\,1s)}^{2}},{{(\sigma 2s)}^{1}}\]

View Answer
99) Most stable carbonium ion is

A)

B)

C)

D)

View Answer
100) Which of the following has maximum number or unpaired electrons?

A)

\[C{{u}^{+}}\]

B)

Zn

C)

\[F{{e}^{2+}}\]

D)

\[N{{i}^{3+}}\]

View Answer
101) A group of compounds now recognised as local hormones are

A)

kinins

B)

prostacyclins

C)

cytokines

D)

substance- P

View Answer
102) Which one of the following is an example of glycoprotein?

A)

Haemoglobin

B)

Lecithin

C)

Mucin

D)

Casein

View Answer
103) Chitin is a structural polysaccharide and is polymerised from

A)

glucose

B)

ribose

C)

deoxyribose

D)

None of the above

View Answer
104) The most important essential fatty acid is

A)

linoleic acid

B)

linolenic acid

C)

arachidonic acid

D)

All of the above

View Answer
105) During chemical evolution key biological compounds were synthesized

A)

                in the atmosphere

B)

                along the ocean shore

C)

                in the ocean

D)

                None of the above

View Answer
106) Which of the following statements is correct?

A)

                \[N{{a}^{+}}\]ions help in the conduction of nerve impulses

B)

                \[N{{a}^{+}}\]ions are important in transport of substances across membranes

C)

                \[N{{a}^{+}}\]ions help to retain water in the body

D)

                \[N{{a}^{+}}\]ions are associated with all the above functions

View Answer
107) Which of the following statements is incorrect?

A)

                The living and non-living are made up of the same elements

B)

                Life originated in air

C)

                Energy transfers and transformations do not occur continuously in a living cell

D)

                ATP is considered as the energy currency of a cell

View Answer
108) Which of the following statements is incorrect?

A)

                The   spermatids   differentiate   into structurally complex spermatozoa by the process of spermiogenesis

B)

                Fertilization is a physico-chemical event

C)

                Cleavage transforms the fertilized ovum into a sphere of aggregated blastomeres

D)

                Cleavage divisions bring appreciable increase in the mass of protoplasm in the developing embryo

View Answer
109) In the event of pregnancy, the corpus luteum persists under the influence of

A)

                LH

B)

                FSH

C)

                chorionic gonadotropin

D)

                progesterone

View Answer
110) Reabsorption of \[N{{a}^{+}}\]is controlled by which One of the following hormones?

A)

Aldosterone

B)

Oestrogen

C)

Glucocorticoids

D)

Testosterone

View Answer
111) In the tissues, high concentration of carbondioxide

A)

                increases the affinity of haemoglobin to both oxygen and hydrogen

B)

                increases the affinity of haemoglobin to oxygen but decreases its affinity to hydrogen

C)

                decreases the affinity of haemoglobin to oxygen but increases its affinity to hydrogen

D)

                decreases the affinity of haemoglobin to both oxygen and hydrogen

View Answer
112) The colon can actively absorb

A)

sodium

B)

glucose

C)

amino acids

D)

glycerol

View Answer
113) The colloid osmotic pressure of blood is due to

A)

albumin

B)

globulin

C)

fibrinogen

D)

All of these

View Answer
114) In a normal ECG recording heart sound will occur

A)

                on the P wave and at the end of QRS complex

B)

                on the QRS complex and at the end of T wave

C)

                at the end of P wave and on the T wave

D)

                at the end of QRS complex and on T wave

View Answer
115) Release of a neurotransmitter at a synapric junction is brought about by

A)

sodium

B)

potassium

C)

chloride

D)

calcium

View Answer
116) Accumulation of uric acid crystals in the synovial joints causes

A)

rheumatoid arthritis

B)

osteo - arthritis

C)

gout

D)

All of the above

View Answer
117) The so called tertian periodicity of Plasmodium vivox refers to the

A)

                pre- erythrocytic phase

B)

                post- erythrocytic phase

C)

                erythrocytic phase

D)

                sexual phase

View Answer
118) Amoebiasis in human is acquired through

A)

                viral infection

B)

                contamination of food with cysts

C)

                accidental consumption of amoebic trophozoites

D)

                None of the above

View Answer
119) Kala- azar is transmitted by

A)

mosquito

B)

sandfly

C)

flea

D)

lice

View Answer
120) Which of the following is not an autosomal recessive trait?

A)

Phenylketonuria

B)

Cystic fibrosis

C)

Albinism

D)

Polydactyly

View Answer
121) The common means of transmission of AIDS is

A)

sexual intercourse

B)

blood transfusion

C)

placental transfer

D)

All of the above

View Answer
122) A gene that has multiple effects is called

A)

dominant gene

B)

mutant gene

C)

pleiotropic gene

D)

operator gene

View Answer
123) The vector of ?break bone fever? is

A)

Culex sp.

B)

Aedes sp.

C)

Anopheles sp.

D)

None of the above

View Answer
124) Which of the following is the major immunoglobulin of human serum?

A)

IgG

B)

IgM

C)

IgA

D)

IgE

View Answer
125) Epidemic dropsy is   caused   by the contamination of mustard oil with

A)

                Argemone

B)

Aspergillus

C)

                Crotalaria

D)

Fusarium

View Answer
126) The population dynamics of a species is basically regulated by

A)

                climate

B)

                food supply

C)

                competition between and within the species

D)

                All of the above

View Answer
127) "Algal zone" is found in

A)

                normal roots of Cycas

B)

                normal roots of Pinus

C)

                coralloid roots of Cycas

D)

                stem of Cycas

View Answer
128) Rickettsiae is a group of

A)

viruses

B)

bacteria

C)

fungi

D)

PPLO

View Answer
129) The bacteria oxidising a number of inorganic compounds to obtain energy for the assimilation of CO2 are called

A)

                photoautotrophic bacteria

B)

                chemoautotrophic bacteria

C)

                heterotrophic bacteria

D)

                None of the above

View Answer
130) Which of the following statement is correct?

A)

                Middle lamella is actually the blue black colored wall

B)

                Middle lamella is the wall which keeps the two adjacent cells together

C)

                Middle lamella is a wall between cells

D)

                Middle lamella is a material which keeps adjacent cells together

View Answer
131) Cycas and Ginkgo are regarded as primitive gymnosperms because

A)

                they lack cones

B)

                they need water for fertilization

C)

                they are living fossils

D)

                they have ciliated sperms

View Answer
132) Under stress, plants produce larger quantities of

A)

auxin

B)

abscisic acid

C)

cytokinin

D)

All of these

View Answer
133) If the stoma remains surrounded by a limited number of cells which cannot be distinguished from other epidermal cells. This type of stomata is known as

A)

perigynous type

B)

paracytic type

C)

anisocytic type

D)

anomocytic type

View Answer
134) A long day plant flowers only if exposed to a light period

A)

                more than its critical day length

B)

                less than its critical day length

C)

                equal to its critical day length

D)

                slightly less than its critical day length

View Answer
135) An important example of pleiotropy is

A)

                thalassaemia

B)

sickle cell anaemia

C)

                haemophilia

D)

  leukaemia

View Answer
136) Mosaic symptom is commonly found in

A)

bacterial disease

B)

fungal disease

C)

viral disease

D)

None of the above

View Answer
137) The commercial cork is obtained from

A)

jamun

B)

pine

C)

oak

D)

teak

View Answer
138) Expanded green stem of Opuntia is called

A)

phylloclade

B)

tendril

C)

bulbs

D)

cladode

View Answer
139) Diatoms float in water because they have

A)

                flagella on the one end of the body

B)

                flagella on the both ends of the body

C)

                wing like structure in middle of the body

D)

                light storage lipids in the body

View Answer
140) Which of the following is an insectivorous plant?

A)

Nepenthes

B)

Solarium

C)

Cuscuta

D)

Asparagus

View Answer
141) When the root is swollen in the middle and tapers at both ends, it will be called as

A)

tuberous root

B)

conical root

C)

fusiform root

D)

napiform root

View Answer
142) In tissue culture of parenchyma, mitosis are accelerated in the presence of

A)

                auxin only

B)

                cytokinin only

C)

                Both (a) and (b)

D)

                gibberellin and auxin

View Answer
143) In longitudinal section of root tip various regions of growth may be seen in sequence from top towards root cap as

A)

                cell division, cell elongation, cell maturation

B)

                cell maturation, cell elongation, cell division

C)

                cell elongation, cell maturation, cell division

D)

                cell maturation, cell division,   cell elongation

View Answer
144) The largest flower found is known as

A)

Rafflesia

B)

Tecoma

C)

Musa

D)

Cauliflower

View Answer
145) The genera that lacks cotyledons but is placed with dictoyledonous plants, in classification is

A)

Datura

B)

Capsicum

C)

Triticum

D)

Cuscuta

View Answer
146) Vascular cambium never develops in the stem of

A)

banana

B)

guava

C)

mango

D)

sunflower

View Answer
147) If the number of chromosomes in the cells of nucellus in Pinus is 24, what would be the number of chromosomes in megaspore mother cell

A)

72

B)

24

C)

12

D)

None of these

View Answer
148) A fibrous root system is best adapted to perform which one of the following functions?

A)

                Storage of food

B)

                Anchorage of the plant into the soil

C)

                Absorption of water and minerals from the soil

D)

                Transport of water and organic food

View Answer
149) A physiological response to the duration of light and darkness is a

A)

daily phase cycle

B)

circadian rhythm

C)

biological clock

D)

photoperiodism

View Answer
150) Important estuaries of India are located in

A)

                West Bengal

B)

                Tamil Nadu

C)

                Both (a) and (b)

D)

                West Bengal, Tamil Nadu and Orissa

View Answer
151) The type of cells that are predominant in potato tubers

A)

                phloem cells

B)

                spongy cells

C)

                parenchyma cells

D)

                parenchyma and collenchyma cells

View Answer
152) Tonoplast is a membrane, which is found surrounding the

A)

vacuole

B)

cytoplasm

C)

nucleus

D)

None of the above

View Answer
153) The tallest plant out of the following is

A)

Sequoia

B)

Eucalyptus

C)

Pinus

D)

Casuarina

View Answer
154) A pair of guard cells form a

A)

lenticel

B)

stoma

C)

hydathode

D)

laticifer

View Answer
155) The grittiness of the pulp guava fruit is due to presence of

A)

sclereids

B)

tracheids

C)

fibres

D)

companion cells

View Answer
156) "Foolish seedling disease" of rice in Japan was caused by

A)

                the deficiency of nitrogen

B)

                a bacterium

C)

                a fungus

D)

                a virus

View Answer
157) Which one is the causative organism of rust disease in wheat?

A)

Puccinia

B)

Aspergillus

C)

Rhizopus

D)

Neurospora

View Answer
158) The rod shaped cells of Bacillus megatarium are converted to spherical units called protoplast on treatment with the enzyme

A)

                lysozyme

B)

                cellulose

C)

                cellulase and hemicellulase

D)

                cellulase, hemicellulase and pectinase

View Answer
159) Tropical plants like sugarcane show high efficiency of CO2 fixation because of

A)

                EMP pathway

B)

                TCA cycle

C)

                Hatch and Slack cycle

D)

                Calvin cycle

View Answer
160) Aerobic bacteria found in hot sulphur springs are termed as

A)

halophiles

B)

thermoacidophiles

C)

chemolithotrophic

D)

None of the above

View Answer
161) 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)

\[M,{{G}_{1}},{{G}_{2}},S\]

View Answer
162) Cell theory was proposed by

A)

                Schleiden and Schwann

B)

                Watson and Crick

C)

                Darwin and Wallace

D)

                Mendel and Morgan

View Answer
163) The two ends of amylose chain are designated as

A)

                5 and 3 ends

B)

                N- terminal and C- terminal ends

C)

                reducing and non- reducing ends

D)

                None of the above

View Answer
164) Which of the following products of photosynthesis are used in dark reaction?

A)

ATP

B)

NADPH + CO2

C)

Water and oxygen

D)

NADPH + ATP

View Answer
165) Predominant form of lipid present in biomembranes

A)

                triacylglycerols

B)

cholesterol

C)

                free fatty acids

D)

                       phospholipids

View Answer
166) High energy phosphate bond is present in

A)

AMP

B)

cyclic- AMP

C)

ADP

D)

adenosine

View Answer
167) If a heterozygous tall plant is crossed with dwarf plant, what will be the ratio of dwarf plants in the progeny

A)

50%

B)

25%

C)

75%

D)

100%

View Answer
168) Clean air is indicated by the heavy growth of

A)

mushrooms

B)

epiphytes

C)

lichens

D)

grasses

View Answer
169) The trace gas which is produced in rice Paddies and is associated with global warming, is

A)

methane

B)

carbon dioxide

C)

hydrogen sulphide

D)

chlorine

View Answer
170) Acid rain is mainly caused by the increased concentration (in the atmosphere) of

A)

                CFCs and dust

B)

                \[N{{O}_{2}}\]and \[S{{O}_{2}}\]

C)

                \[N{{O}_{2}},S{{O}_{2}},N{{H}_{3}},{{H}_{2}}S\]and dust

D)

                \[N{{H}_{3}}\]and \[S{{O}_{2}}\]

View Answer
171) Complete genomic sequence of the following plant has been recently announced

A)

Arabidopsis thaliana

B)

Triticum vulgare

C)

Cucurbita pepo

D)

Pisum sativum

View Answer
172) In bacteriophages, the genetic material is

A)

RNA

B)

DNA

C)

mRNA

D)

RNA or DNA

View Answer
173) Duplication of DNA is called

A)

replication

B)

transduction

C)

transcription

D)

translocation

View Answer
174) In plasmids the R or sex factor is concerned with

A)

                the transfer of genetic material from one strain to another

B)

                drug resistance

C)

                colicin production

D)

                reproduction

View Answer
175) Plasmids are the molecules of

A)

                DNA

B)

                RNA

C)

                Protein

D)

                DNA bound by histones

View Answer
176) The bacteriophage \[\phi \times 174\]differs from other organisms in having

A)

                single stranded DNA, as hereditary material

B)

                RNA as hereditary material

C)

                both DNA and RNA, as hereditary material

D)

                DNA as hereditary material

View Answer
177) The codon is said to be degenerate, when

A)

                the codons degenerate soon after the synthesis of polypeptide chain

B)

                one codon can code for more than one amino acid

C)

                the codon is non-functional and cannot code for any amino acid

D)

                the same amino acid can be coded by more than one codons

View Answer
178) Which of the following structures is present in mitochondria?

A)

Polysomes

B)

Dictyosomes

C)

Quantasomes

D)

Oxysomes

View Answer
179) CO is a pollutant because it

A)

                inhibits glycolysis

B)

                makes nervous system inactive

C)

                reacts with haemoglobin of blood

D)

                None of the above

View Answer
180) Which process is completed in mitochondria?

A)

                Oxidative phosphorylation

B)

                Photophosphorylation

C)

                Photolysis

D)

                Matrix formation

View Answer
181) Grana are present inside the

A)

mitochondria

B)

chloroplast

C)

endoplasmic reticulum

D)

ribosome

View Answer
182) Which event involves in crossing over?

A)

                Chromosomes are short and thick

B)

                Exchange of genetic material

C)

                Pairing of chromosomes

D)

                Addition of chromosomes

View Answer
183) In mongolism a patient possesses

A)

44 chromosomes

B)

45 chromosomes

C)

47 chromosomes

D)

46 chromosomes

View Answer
184) The term water potential was given by

A)

Dixon and Jolly

B)

Prof R C Sirohi

C)

J C Bose

D)

Slatyer and Tayler

View Answer
185) Abscisic acid plays active role in

A)

dormancy of seeds

B)

cell division

C)

enhance senescence

D)

shoot elongation

View Answer
186) What is the name of the book written by Aristotle?

A)

                Philosophic Zoologique

B)

                Systema Naturae

C)

                Historia Naturalis

D)

                Historia Animalium

View Answer
187) Haemoglobin is having maximum affinity with

A)

\[N{{H}_{3}}\]

B)

\[{{O}_{2}}\]

C)

\[C{{O}_{2}}\]

D)

\[CO\]

View Answer
188) Humus is

A)

                living organic and inorganic matter

B)

                radioactive materials

C)

                dead and decayed organic matter

D)

                only living organic matter

View Answer
189) Lacteals are found in

A)

villus of intestine

B)

kidneys

C)

liver

D)

lungs

View Answer
190) Which one of the following exhibit concentric tube within tube plan?

A)

Annelids

B)

Mollusca

C)

Arthropoda

D)

All of these

View Answer
191) Vocal cords are situated at

A)

bronchial tube

B)

glottis

C)

larynx

D)

pharynx

View Answer
192) Karyotaxonomy is the modem branch of classification which is based on

A)

                trinomial nomenclature

B)

                organic evolution

C)

                bands found on chromosomes

D)

                number of chromosomes

View Answer
193) Under certain conditions scientists have obtained cell like structures. These are known as

A)

prebiotic soup

B)

coacervates

C)

protists

D)

microbes

View Answer
194) What is RQ of early stages of germination of castor seed?

A)

One

B)

Two

C)

Zero

D)

Less than one

View Answer
195) Which one of the following was most likely absent in free form in the primordial atmosphere at the time of origin of life?

A)

Oxygen

B)

Ammonia

C)

Hydrogen

D)

Methane

View Answer
196) In which book, "Binomial nomenclature" has been used for the first time?

A)

Historia Plantarum

B)

Historia Naturalis

C)

Systema Naturae

D)

Histoirae Naturelle

View Answer
197) The female gametophyte in angiosperm is made up of

A)

single celled

B)

six celled

C)

seven celled

D)

eight celled

View Answer
198) Insectivorous plants grow in

A)

                calcium deficient soil

B)

                carbon deficient soil

C)

                magnesium deficient soil

D)

                nitrogen deficient soil

View Answer
199) Which blood group is a universal recipient?

A)

O

B)

AB

C)

B

D)

A

View Answer
200) When released from ovary, the human egg contains

A)

                XY- chromosomes

B)

                two X- chromosomes

C)

                one Y- chromosome

D)

                one X- chromosome

View Answer

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