Solved papers for JCECE Medical JCECE Medical Solved Paper-2011

JCECE Medical Solved Paper-2011 Total Questions - 150

1) The dimension of \[\frac{P}{a}\]in the equation \[p=\frac{b-{{t}^{2}}}{ax}\] where p is pressure, \[x\]is distance and t is time are

A)

\[[ML{{T}^{-2}}]\]

B)

\[[M{{T}^{-2}}]\]

C)

\[[M{{L}^{3}}{{T}^{-2}}]\]

D)

\[[L{{T}^{-3}}]\]

View Answer
2) A body moving with uniform acceleration describes 12 m in the third second of its motion and 20 m in the 5th second. Find the velocity after 10 th second.

A)

40 m/s

B)

42 m/s

C)

52 m/s

D)

4m/s

View Answer
3) A ball rolls of the top of a stair way with a horizontal velocity\[u\,m{{s}^{-1}}.\] If the steps are \[h\] metre high and b metre wide, the ball will hit the edge of the nth step, where \[n\] is

A)

\[\frac{2hu}{g{{b}^{2}}}\]

B)

\[\frac{2h{{u}^{2}}}{g{{b}^{2}}}\]

C)

\[\frac{2h{{u}^{2}}}{gb}\]

D)

\[\frac{h{{u}^{2}}}{g{{b}^{2}}}\]

View Answer
4) A man slides down a light rope whose breaking strength is \[\eta \]times his weight. What should be his maximum acceleration so that the rope just not breaks?

A)

\[g(1-\eta )\]

B)

\[\eta g\]

C)

\[\frac{g}{1+\eta }\]

D)

\[\frac{g}{1-\eta }\]

View Answer
5) The motor of an engine is rotating about its axis with an angular velocity of 100 rev/m. If conies to rest in 15s, after being switched off. Assuming constant angular deceleration. What are the numbers of revolutions made by it before coming to rest?

A)

12.5

B)

40

C)

32.6

D)

15.6

View Answer
6) By what percent the energy of a satellite has to be increased to shift it from an orbit of radius r to 3r?

A)

22.3%

B)

33.3%

C)

66.7%

D)

100%

View Answer
7) To maintain a rotar at uniform angular speed of 200 rad/s, an engine needs to transmit a torque of 180 Nm. What is the power required by engine? (Assume efficiency of engine to be 80%)

A)

36kW

B)

18 kW

C)

45kW

D)

54kW

View Answer
8) Two pendulum have time period T and\[\frac{5T}{4}\] they start SHM at the same time form the mean position. What will be the phase difference between them after the bigger pendulum completed one oscillation

A)

\[{{45}^{o}}\]

B)

\[{{90}^{o}}\]

C)

60°

D)

\[~{{30}^{o}}\]

View Answer
9) An open pipe of length 33 cm resonates with frequency of 1000 Hz. If the speed of sound is \[333\,m{{s}^{-1}},\]then this frequency is

A)

fundamental frequency of the pipe

B)

third harmonic of the pipe

C)

second harmonic of the pipe

D)

fourth harmonic of the pipe

View Answer
10) Water rises to a height h in a capillary at the surface of earth on the surface of the moon the height of water column in the same capillary will be

A)

\[6h\]

B)

\[h/6\]

C)

\[h\]

D)

zero

View Answer
11) The molar heat capacity in a process of a diatomic gas, if it does a work of Q/4 when heat Q is supplied to it, is

A)

\[\frac{2}{5}R\]

B)

\[\frac{10}{3}R\]

C)

\[\frac{5}{3}R\]

D)

\[\frac{6}{5}R\]

View Answer
12) A black body has maximum energy at wavelength\[{{\lambda }_{m}}\]at temperature 2000 K. The corresponding wavelength at a temperature of 3000 K will be

A)

\[\frac{3}{2}{{\lambda }_{m}}\]

B)

\[\frac{2}{3}{{\lambda }_{m}}\]

C)

\[\frac{4}{9}{{\lambda }_{m}}\]

D)

\[\frac{9}{4}{{\lambda }_{m}}\]

View Answer
13) The potential field of an electric field \[E=(yi+xj)\]is

A)

\[V=-(x+y)+\]constant

B)

\[V=\text{constant}\]

C)

\[V=-({{x}^{2}}+{{y}^{2}})+cons\tan t\]

D)

\[V=-xy+\text{constant}\]

View Answer
14) The \[80\,\Omega \] galvanometer, deflects full scale for a potentials of 20 mV. A voltmeter deflecting full scale of 5V is to made using this galvanometer. We must connect

A)

a resistance of \[19.92\,k\Omega \]parallel to the galvanometer

B)

a resistance of \[19.92\,k\Omega \]in series with the galvanoyneter

C)

a resistance of \[20\,k\Omega \]parallel to the galvanometer

D)

a resistance of \[20\,k\Omega \]in series with galvanometer

View Answer
15) A current of 1 A is passed through a straight wire of length 20 m. The magnetic field at a point in air at a distance of 3 m from either end of wire and lying on the axis of wire will be

A)

\[\frac{{{\mu }_{0}}}{2\pi }\]

B)

\[\frac{{{\mu }_{0}}}{4\pi }\]

C)

\[\frac{{{\mu }_{0}}}{8\pi }\]

D)

zero

View Answer
16) short bar magnet placed with its axis- at \[{{30}^{o}}\] with a uniform external magnetic field of 0.16 T experience a torque of magnitude 0.032 J. The magnetic moment of the bar magnet will be

A)

\[0.23\,J{{T}^{-1}}\]

B)

\[0.40\,J{{T}^{-1}}\]

C)

\[0.80\,J{{T}^{-1}}\]

D)

zero

View Answer
17) A coil has an area of \[0.05\,{{m}^{2}}\]and has 800 turns. After placing the coil in a magnetic field of strength\[4\times {{10}^{-5}}Wb{{m}^{-2}}\]perpendicular to the field, the coil is rotated through \[{{90}^{o}}\] in 0. Is. The average emf induced is

A)

zero

B)

0.016V

C)

0.01V

D)

0.032V

View Answer
18) An alternating voltage (in volt) given by \[V=200\sqrt{2}\sin (100t)\] is connected to \[1\mu F\]capacitor through an AC ammeter. The reading of the ammeter will be

A)

10 mA

B)

20 mA

C)

40 mA

D)

80 mA

View Answer
19) Instantaneous displacement current of 1.0 A in the space between the parallel plates of \[1\mu F\]capacitor can be established by changing potential difference of

A)

\[{{10}^{-6\text{ }}}V/s\]

B)

\[{{10}^{6}}\text{ }V/s\]

C)

\[{{10}^{-8}}\text{ }V/s\]

D)

\[~{{10}^{8}}\text{ }V/s\]

View Answer
20) The maximum magnification that can be obtained with a convex lens of focal length 2.5 cm is least distance of distinct vision is 25 cm

A)

10

B)

\[0.1\]

C)

62.5

D)

11

View Answer
21) The magnifying power of an astronomical telescope is 8 and the distance between the two lenses is 54 cm. The focal length of eye lens and objective lens will be respectively

A)

6 cm and 48 cm

B)

48 cm and 6 cm

C)

8 cm and 64 cm

D)

6 cm and 60 cm

View Answer
22) The path difference between two wavefronts emitted by coherent sources of wavelength \[5460\overset{\text{o}}{\mathop{\text{A}}}\,\]is 2.1 micron The phase difference between the wave fronts at that point is

A)

7.692 rad

B)

\[7.692\text{ }\pi \text{ }rad\]

C)

\[\frac{7.692}{\pi }rad\]

D)

\[\frac{7.692}{3\pi }rad\]

View Answer
23) A photocell with a constant potential difference of V volt across it is illuminated by a point source from a distance of 25 cm. When the source is moved to a distance of 1 m, the electrons emitted by the photocell

A)

carry 1/4th their previous energy

B)

are 1/6th as numerous as before

C)

are 1/4th as numerous as before

D)

carry 1/4th their previous momentum

View Answer
24) When an electron in hydrogen atom is excited from its 4th to 5th stationary orbit, the change in angular momentum of electron is (Plancks constant \[h=6.6\times {{10}^{-34}}\,Js\])

A)

\[4.16\times {{10}^{-34}}Js\]

B)

\[3.32\times {{10}^{-34}}Js\]

C)

\[1.05\times {{10}^{-34}}Js\]

D)

\[2.08\times {{10}^{-34}}Js\]

View Answer
25) Let T be the mean life of a radioactive sample. 75% of the active nuclei present in the sample initially will decay in time

A)

\[2T\]

B)

\[\frac{1}{2}(ln2)T\]

C)

\[4T\]

D)

\[2(ln2)T\]

View Answer
26) A potential barrier of 0.50 V exists across a p-n junction. If the deplection region is \[5.0\times {{10}^{-7}}m\]wide, the strength of electric field in this region is

A)

\[1.0\times {{10}^{6}}V/m\]

B)

\[1.0\times {{10}^{5}}V/m\]

C)

\[2.0\times {{10}^{5}}V/m\]

D)

\[2.0\times {{10}^{6}}V/m\]

View Answer
27) What is an AND gate?

A)

It has not equivalence to switching circuit

B)

It is equivalent to series switching circuit

C)

It is equivalent to parallel switching circuit

D)

It is a mixture of series and parallel switching

View Answer
28) A parachutist drops first freely from an aero plane for 10 s and then parachute opens out. Now he descends with a net retardation of \[2.5\,m/{{s}^{2}}.\] If he bails out of the plane at a height of 2495 m and\[g=10\,m/{{s}^{2}},\] his velocity on reaching the ground will be

A)

5 m/s

B)

10 m/s

C)

15 m/s

D)

20 m/s

View Answer
29) A particle is moving along a circular path with uniform speed. Through what angle does it angular velocity change when it completes half of the circular path?

A)

\[{{0}^{o}}\]

B)

\[{{45}^{o}}\]

C)

\[{{180}^{o}}\]

D)

\[~{{360}^{o}}\]

View Answer
30) Tick out the wrong statement.

A)

Transverse waves can be generated in solids.

B)

A system having ice floating on water has the same volume even after the ice is melted.

C)

Heat radiations have the velocity of light.

D)

Phase will not change when sound or light waves are reflected back.

View Answer
31) Two particles P and Q describe SHM of same amplitude a, frequency v along the same straight line. The maximum distance between the two particle is \[a\sqrt{2}.\]The initial phase difference between the particles is

A)

zero

B)

\[\pi /2\]

C)

\[\pi /6\]

D)

\[\pi /3\]

View Answer
32) The magnitude of electric intensity E is such that an electron placed in it would experience an electrical force equal to its weight. E is given by

A)

\[mge\]

B)

\[\frac{e}{mg}\]

C)

\[\frac{mg}{e}\]

D)

\[\frac{{{e}^{2}}g}{{{m}^{2}}}\]

View Answer
33) In the figure, charge and the potential difference across the \[4\mu F\] capacitor will be nearly

A)

\[600\,\mu C,150\,V\]

B)

\[300\,\mu C,75\,V\]

C)

\[800\,\mu C,200\,V\]

D)

\[580\,\mu C,145\,V\]

View Answer
34) A dip circle lies initially in the magnetic meridian. If it is now rotated, through angle\[\theta \] in the horizontal plane, then tangent of the angle of dip is changed in the ratio

A)

\[1:\cos \theta \]

B)

\[\cos \theta :1\]

C)

\[1:\sin \theta \]

D)

\[\sin \theta :1\]

View Answer
35) A 5 cm long solenoid having \[10\,\,\Omega \] resistance and 5 mH inductance is joined to a 10 V battery, At steady state, the current through the solenoid (in ampere) will be

A)

5

B)

2

C)

1

D)

zero

View Answer
36) A convex lens makes a real image 4 cm long on a screen. When the lens is shifted to a new position without disturbing the object, we again get a real image on the screen which is 16 cm tall. The length of the object must be

A)

\[\frac{1}{4}cm\]

B)

\[8\,cm\]

C)

\[12\,cm\]

D)

\[20\,cm\]

View Answer
37) For a particle of mass m enclosed in a one-dimensional box of length L, the de-Broglie concept would lead to stationary waves, with nodes at the two ends. The energy values allowed for such a system (with n as integer) will be

A)

\[\frac{{{h}^{2}}}{8\,m{{L}^{2}}}{{n}^{2}}\]

B)

\[\frac{{{h}^{2}}}{4mL}{{n}^{2}}\]

C)

\[\frac{h}{4mL}n\]

D)

\[\frac{{{h}^{2}}}{4m{{L}^{2}}}{{n}^{2}}\]

View Answer
38) If \[{{N}_{0}}\]is the original mass of the substance of half-life period \[{{t}_{1/5}}=5yrs,\] then the amount of substance left after 15 days is

A)

\[\frac{{{N}_{0}}}{8}\]

B)

\[\frac{{{N}_{0}}}{16}\]

C)

\[\frac{{{N}_{0}}}{2}\]

D)

\[\frac{{{N}_{0}}}{4}\]

View Answer
39) A doubled layered wall has layer A, 10 cm thick and B, 20 cm thick. The thermal conductivity of A is thrice that of B. In the steady state, the temperature difference across the wall is \[35{{\,}^{o}}C.\] The temperature difference across the layer A is

A)

\[28{{\,}^{o}}C\]

B)

\[14{{\,}^{o}}C\]

C)

\[7{{\,}^{o}}C\]

D)

\[5{{\,}^{o}}C\]

View Answer
40) The mass of a planet is six times that of the earth. The radius of the planet is twice that of the earth. If the escape velocity from the earth is \[v,\]then the escape velocity from the planet is

A)

\[\sqrt{3}\,v\]

B)

\[\sqrt{2}\,v\]

C)

\[\sqrt{5}\,v\]

D)

\[\sqrt{12}\,v\]

View Answer
41) Power supplied to a particle of mass 2 kg varies with time as \[P=\frac{3{{t}^{2}}}{2}W.\]Here t is in second. If velocity of particle at \[t=0\]is \[v=0,\]the velocity of particle at time \[t=2\,s\]will be

A)

1 m/s

B)

4 m/s

C)

2 m/s

D)

\[2\sqrt{2}\,m/s\]

View Answer
42) A particle is projected from the ground with an initial speed of\[v\]at an angle\[\theta \]with horizontally. The average velocity of the particle between its point of projection and highest point of trajectory is

A)

\[\frac{v}{2}\sqrt{1+2{{\cos }^{2}}\theta }\]

B)

\[\frac{v}{2}\sqrt{1+2{{\cos }^{2}}\theta }\]

C)

\[\frac{v}{2}\sqrt{1+3{{\cos }^{2}}\theta }\]

D)

\[v\cos \theta \]

View Answer
43) Given\[\sigma \] is the compressibility of water, \[\rho \] is the density of water arid k is the bulk modulus of water. What is the energy density of water at the bottom of a lake \[h\] metre deep?

A)

\[\frac{1}{2}\sigma {{(h\rho g)}^{2}}\]

B)

\[\frac{1}{2}\sigma (h\rho g)\]

C)

\[\frac{1}{2}\frac{h\rho g}{\sigma }\]

D)

\[\frac{h\rho g}{\sigma }\]

View Answer
44) An ideal gas heat engine operates in a Carnot cycle between \[227{{\,}^{o}}C\]and \[127{{\,}^{o}}C.\] It absorbs \[6.0\times {{10}^{4}}\,cal\]at the higher temperature. The amount of heat converted into work is equal to

A)

\[4.8\times {{10}^{4}}cal\]

B)

\[3.5\times {{10}^{4}}cal\]

C)

\[1.6\times {{10}^{4}}cal\]

D)

\[1.2\times {{10}^{4}}cal\]

View Answer
45) The latent heat of vaporisation of water is \[2240~J.\] If the work done in the process of vaporisation of 1 g is 168 J, then increases in internal energy is

A)

2408 J

B)

2240 J

C)

2072 J

D)

1904 J

View Answer
46) A body dropped from the top of a tower covers a distance \[7x\]in the last second of its journey, where \[x\] is the distance covered in first second. How much time does it take to reach the ground?

A)

3s

B)

4s

C)

5s

D)

6s

View Answer
47) A body just dropped from a tower explodes into two pieces of equal mass in mid-air. Which of the following is not possible?

A)

Each part will follow parabolic path

B)

Only one part will follow parabolic path

C)

Both parts move along a vertical line

D)

One part reaches the ground earlier than the other

View Answer
48) Moment of inertia of a uniform circular disc about a diameter is \[I.\]Its moment of inertia about an axis perpendicular to its plane and passing through a point on its rim will be

A)

57

B)

37

C)

6J

D)

47

View Answer
49) Two sources A and B are sounding notes of frequency 680 Hz. A listener moves from A to B with a constant velocity \[\upsilon .\]If the speed of sound 340 m/s, what must be the value of \[\upsilon .\]so that he hears 10 beats per second?

A)

2.0 m/s

B)

2.5 m/s

C)

3.0 m/s

D)

3.5 m/s

View Answer
50) A current of 1 A flows in a circular area of wire which subtends an angle of \[\left( \frac{3\pi }{2} \right)\text{rad}\]at its centre, whose radius is R. The magnetic induction B at the centre is

A)

\[\frac{{{\mu }_{0}}I}{R}\]

B)

\[\frac{{{\mu }_{0}}I}{2R}\]

C)

\[\frac{2{{\mu }_{0}}I}{R}\]

D)

\[\frac{3{{\mu }_{0}}I}{8R}\]

View Answer
51) Which of the following compounds corresponds to vant Hoff factor \[(i)\] to be equal to 2 for dilute solution?

A)

\[{{K}_{2}}S{{O}_{4}}\]

B)

\[NaHS{{O}_{4}}\]

C)

Sugar

D)

\[MgS{{O}_{4}}\]

View Answer
52) \[\text{0}\text{.1 M NaCl}\]and \[\text{0}\text{.1 M C}{{\text{H}}_{\text{3}}}\text{COOH}\]are kept in separate containers. If their osmotic pressures are \[{{p}_{1}}\]and \[{{p}_{2}}\]respectively then what is the correct statement?

A)

\[{{p}_{1}}>{{p}_{2}}\]

B)

\[{{p}_{1}}={{p}_{2}}\]

C)

\[{{p}_{1}}<{{p}_{2}}\]

D)

\[{{p}_{1}}={{p}_{2}}=0\,\text{atm}\]

View Answer
53) Primary, secondary and tertiary alcohols may be distinguished by

A)

Fehling solution

B)

Victor-Meyertest

C)

Hofmanntest

D)

Beilstein test

View Answer
54) Which of the following will respond to Cannizaros reaction?

A)

2, 2-dimethylpropanal

B)

Acetaldehyde

C)

Propionaldehyde

D)

Cinnamaldehyde

View Answer
55) Which one of the following will increase the voltage of the cell? \[Sn(s)+2A{{g}^{+}}(aq)\xrightarrow{{}}S{{n}^{2+}}+(aq)+2Ag(s)\]

A)

Increase in the size of silver rod

B)

Increasing the size of plate

C)

Increase in the concentration of \[A{{g}^{+}}\]ions

D)

Increase in the concentration of\[S{{n}^{2+}}\] ions

View Answer
56) Which among the following can be purified by steam distillation?

A)

Phenol

B)

Aniline

C)

Benzoic acid

D)

p-nitrophenol

View Answer
57) For a chemical reaction \[A+BC,\]the thermodynamic equilibrium constant \[{{K}_{p}}\] is

A)

in \[\text{at}{{\text{m}}^{-2}}\]

B)

in \[\text{at}{{\text{m}}^{-3}}\]

C)

in \[\text{at}{{\text{m}}^{-1}}\]

D)

dimensionless

View Answer
58) If the equivalent weight of a trivalent metal is 32,7, the molecular weight of its chloride is

A)

68.2

B)

103.7

C)

204.6

D)

32.7

View Answer
59) Conjugate base of hydrazoic acid is

A)

\[HN_{3}^{-}\]

B)

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

C)

\[N_{3}^{-}\]

D)

\[{{N}^{3-}}\]

View Answer
60) The geometrical arrangement and shape of \[I_{3}^{-}\] are respectively

A)

trigonal bipyramidal geometry, linear shape

B)

hexagonal geometry, T-shape

C)

triangular planar geometry, triangular shape

D)

tetrahedral geometry, pyramidal shape

View Answer
61) Sodium reacts with water more vigorously than Li because it has

A)

higher atomic mass

B)

more electropositive character

C)

metallic nature

D)

more electronegative character

View Answer
62) When sodium is treated with sufficient oxygen/air, the product obtained is

A)

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

B)

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

C)

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

D)

\[NaO\]

View Answer
63) Gallium arsenide is purified by

A)

froth floatation process

B)

van-Arkel method

C)

zone refining method

D)

electrolytic method

View Answer
64) Which ion has the lowest radius from the. following ions?

A)

\[N{{a}^{+}}\]

B)

\[M{{g}^{2+}}\]

C)

\[A{{l}^{3+}}\]

D)

\[S{{i}^{4+}}\]

View Answer
65) The extraction of which of the following metals involves bessemerisation?

A)

Iron

B)

Copper

C)

Aluminium

D)

Silver

View Answer
66) Terylene is made by polymerisation of terephthalic acid with

A)

ethylene glycol

B)

phenol

C)

ethanol

D)

catechol

View Answer
67) Treatment of ammonia with excess of ethyl iodide will yield

A)

diethylamine

B)

ethylamine

C)

triethylamine

D)

tetraethylammonium iodide

View Answer
68) In the combustion of 2.0 g of methane, 25 kcal heat is liberated. Heat of combustion of methane would be

A)

150 kcal

B)

200 kcal

C)

250 kcal

D)

350 kcal

View Answer
69) Arsenic sulphide is a negative sol. The reagent with least precipitating power is

A)

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

B)

\[NaCl\]

C)

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

D)

glucose

View Answer
70) Which of the following salt when dissolved in water gets hydrolysed?

A)

\[NaCl\]

B)

\[N{{H}_{4}}Cl\]

C)

\[KCl\]

D)

\[N{{a}_{2}}S{{O}_{4}}\]

View Answer
71) 20 mL of a \[\text{HCl}\]solution exactly neutralizes 40 mL of 0.005 N NaOH solution. The pH of \[\text{HCl}\] solution is

A)

2.5

B)

2.0

C)

1.5

D)

1

View Answer
72) Which of the following is used for inducing sleep?

A)

Paracetamol

B)

Chloroquine

C)

Bithional

D)

Barbituric acid derivatives

View Answer
73) Which of the following acids has the smallest dissociation constant?

A)

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

B)

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

C)

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

D)

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

View Answer
74) Hydrolysis of benzonitrile by dilute \[\text{HCl}\]yields

A)

aniline

B)

benzoic acid

C)

benzamide

D)

benzaldehyde

View Answer
75) Anti-Markowhikoffs addition of HBr is not observed in

A)

propene

B)

1-butene

C)

but-2-ene

D)

pent-2-ene

View Answer
76) Kjeldahls method can be used for estimation of nitrogen in

A)

\[{{C}_{6}}{{H}_{5}}N{{O}_{2}}\]

B)

pyridine

C)

\[{{C}_{6}}{{H}_{5}}-N=N-{{C}_{6}}{{H}_{5}}\]

D)

\[{{C}_{6}}{{H}_{5}}N{{H}_{2}}\]

View Answer
77) How many electrons in 19 K have\[n=3;l=0\]?

A)

1

B)

2

C)

4

D)

3

View Answer
78) Metallic bond is

A)

similar to ionic bond

B)

similar to covalent bond

C)

neither similar to ionic nor covalent bond

D)

formed by the movement of positively charged spheres in a sea of electrons

View Answer
79) Which of the following is not a Lewis base?

A)

\[C{{N}^{-}}\]

B)

\[ROH\]

C)

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

D)

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

View Answer
80) Hydrogen can have oxidation number/s of

A)

\[-1\]only

B)

\[+\,1\]only

C)

0 only

D)

\[-1,0,+1\]

View Answer
81) 250 mL of a sodium carbonate solution contains 2.65 g of \[\text{N}{{\text{a}}_{\text{2}}}\text{C}{{\text{O}}_{\text{3}}}\text{.}\]If 10 mL of this solution is diluted to 1 L, what is the concentration of the resultant solution? (Mol. wt. of\[\text{N}{{\text{a}}_{\text{2}}}\text{C}{{\text{O}}_{\text{3}}}\text{=106}\])

A)

0.1 M

B)

0.001 M

C)

0.01 M

D)

\[{{10}^{-4}}\,M\]

View Answer
82) At constant temperature, in a given mass of an ideal gas

A)

the ratio of pressure and volume always remains constant

B)

volume always remains constant

C)

pressure always remains constant

D)

the product of pressure and volume always remains constant

View Answer
83) The rate of the reaction intermediates can be determined by the study of

A)

catalyst effects

B)

concentration of the reactants

C)

temperature effects

D)

solvent effects

View Answer
84) Order of reaction is decided by

A)

temperature

B)

mechanism of reaction

C)

molecularity

D)

pressure

View Answer
85) Which of the following conditions will always lead to a non-spontaneous change?

A)

\[+\,ve\text{ }\Delta H\]and \[+\,ve\text{ }\Delta S\]

B)

\[-\,ve\text{ }\Delta H\] and \[-\,ve\text{ }\Delta S\]

C)

\[+\,ve\text{ }\Delta H\]and \[-\,ve\text{ }\Delta S\]

D)

\[-\,ve\text{ }\Delta H\] and\[+\,ve\text{ }\Delta S\]

View Answer
86) The passage of current liberates \[{{\text{H}}_{\text{2}}}\]at cathode and \[\text{C}{{\text{l}}_{\text{2}}}\]at anode. The solution is

A)

copper chloride in water

B)

\[\text{NaCl}\] in water

C)

ferric chloride in water

D)

\[\text{AuC}{{\text{l}}_{3}}\] in water

View Answer
87) Compounds with \[{{\text{C}}_{\text{4}}}{{\text{H}}_{\text{11}}}\text{N}\]as molecular formula can exhibit

A)

position isomerism

B)

metamerism

C)

functional isomerism

D)

All the three

View Answer
88) Which of the following species is a nucleophile?

A)

\[\overset{+}{\mathop{N}}\,{{O}_{2}}\]

B)

\[_{.}^{.}C{{X}_{2}}\]

C)

\[_{\centerdot }^{\centerdot }\overset{\centerdot \centerdot }{\mathop{N}}\,H_{2}^{-}\]

D)

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

View Answer
89) Which of the following carbocation is most stable?

A)

\[C{{H}_{3}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]

B)

\[C{{H}_{2}}=\overset{+}{\mathop{C}}\,H\]

C)

\[CH={{C}^{+}}\]

D)

\[{{C}_{6}}H_{5}^{+}\]

View Answer
90) Brown colour in \[\text{HN}{{\text{O}}_{\text{3}}}\]can be removed by

A)

adding Mg powder

B)

boiling the acid

C)

passing \[\text{N}{{\text{H}}_{\text{3}}}\]through acid

D)

passing air through warm acid

View Answer
91) What products are expected from the disproportionation reaction of hypochlorous acid?

A)

\[HCl{{O}_{3}}\]and \[C{{l}_{2}}O\]

B)

\[HCl{{O}_{2}}\]and\[HCl{{O}_{4}}\]

C)

\[HCl\]and \[C{{l}_{2}}O\]

D)

\[HCl\]and \[HCl{{O}_{3}}\]

View Answer
92) Which of the following is not a wax?

A)

Myricyl palmitate

B)

Tripalmitin

C)

Myricyl cerotate

D)

Cetyl palmitate

View Answer
93) Which of the following ions forms most stable complex compound?

A)

\[F{{e}^{3+}}\]

B)

\[M{{n}^{2+}}\]

C)

\[N{{i}^{2+}}\]

D)

\[C{{u}^{2+}}\]

View Answer
94) Silver plating is carried out from which of the following?

A)

\[AgN{{O}_{3}}\]

B)

\[AgCl\]

C)

\[K[Ag{{(CN)}_{2}}]\]

D)

All of these

View Answer
95) Which one of the following is an example of non-typical transition elements?

A)

\[Li,K,Na\]

B)

\[Be,Al,Pb\]

C)

\[Zn,Cd,Hg\]

D)

\[Ba,Ga,Sr\]

View Answer
96) In the reaction, \[{{C}_{6}}{{H}_{6}}\xrightarrow[AlC{{l}_{3}}]{C{{H}_{3}}Cl}A\xrightarrow{KMn{{O}_{4}}}B,\]B is

A)

benzoic acid

B)

benzoyl chloride

C)

benzaldehyde

D)

chlorobenzene

View Answer
97) The reaction, \[{{C}_{6}}{{H}_{5}}OH\xrightarrow[Pyridine]{C{{H}_{3}}COCl}{{C}_{6}}{{H}_{5}}OCOC{{H}_{3}}\] is called

A)

Reimer-Tiemann reaction

B)

Schotten-Baumann reaction

C)

acetylation

D)

benzoylation

View Answer
98) Which of the following enzymes is not useful in the digestion of proteins?

A)

Chymotripsin

B)

Pepsin

C)

Tripsin

D)

Lipase

View Answer
99) Which are isomers?

A)

Ethyl alcohol and dimethyl ether

B)

Acetone and acetaldehyde

C)

Propionic acid and propanone

D)

Methyl alcohol and dimethyl ether

View Answer
100) The dative bond is present in

A)

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

B)

\[S{{O}_{3}}\]

C)

\[PC{{l}_{5}}\]

D)

\[B{{F}_{3}}\]

View Answer
101) Who has developed the concept of phagocytosis in immunity?

A)

TH Huxley

B)

E Strasburger

C)

Ernst Haeckel

D)

E Metchnikoff

View Answer
102) Changes in the body form of some planktonic animals with seasonal changes in temperature are grouped under

A)

anamorphosis

B)

cyclomorphosis

C)

metamorphosis

D)

heteromorphosis

View Answer
103) Smallpox is a

A)

hereditary disease

B)

viral disease

C)

deficiency disease

D)

bacterial disease

View Answer
104) An animal with same generic, specific and subspecific name is

A)

man

B)

gorilla

C)

rabbit

D)

elephant

View Answer
105) Which of the following pairs correctly represent the grouping spermatophyta according to one of the schemes of classifying plants?

A)

Pinus, Cycas

B)

Ginkgo, Pisum

C)

Acacia, Casuarina

D)

Rhizopus, Triticum

View Answer
106) Trichodesmium erythreum shows phenomenon of

A)

red snow formation

B)

red tide formation

C)

red sea colouration

D)

None of the above

View Answer
107) Euglena is a Protozoa because it possesses

A)

flagella

B)

chloroplast

C)

cell wall

D)

None of these

View Answer
108) Potato Dextrose Agar (PDA) medium is best for culturing

A)

saprophytic fungi

B)

obligate fungi

C)

aquatic fungi

D)

All of these

View Answer
109) Cycas differs from Pinus in producing

A)

porous wood

B)

manoxylic wood

C)

pycnoxylic wood

D)

female cone

View Answer
110) Red snow formation is associated with

A)

Chlamydomonas nivalis

B)

Chlamydomonas longistigma

C)

Chlamydomonas coccifera

D)

Chlamydomona ooganus

View Answer
111) Symmetry exhibited by sea walnuts is

A)

radial

B)

spherical

C)

bilateral

D)

biradial

View Answer
112) Cells not found in sponges are

A)

porocytes

B)

myocytes

C)

cnidoblasts

D)

calcoblasts

View Answer
113) Nematocvsts occur in

A)

ectosarc

B)

cnidocytes

C)

endosarc

D)

epithelial cells

View Answer
114) Precious red coral used in jewellery is

A)

Favia

B)

Astraea

C)

Coraltium

D)

Meandrina

View Answer
115) Which one is not a parasite?

A)

Schistosoma

B)

Dugesia

C)

Wuchereria

D)

Echinococcus

View Answer
116) Adult Wuchereria bancrofti lives in

A)

musdesofCizfey

B)

human lymph nodes

C)

salivary glands of Culex

D)

human subdermal spaces

View Answer
117) Pheretimd is

A)

volant

B)

abyssal

C)

arborea}

D)

fossorial

View Answer
118) Biramous appendages are present in

A)

Insecta

B)

Crustacea

C)

Onychophora

D)

Cephalopoda

View Answer
119) Which one of the following is correct?

A)

Arthropoda-Arachnida-Grasshopper

B)

Mollusca-Cephalopoda-Octopus

C)

Annelida-Hirudinea-Silverfish

D)

Mollusca-Bivalvia-Pila

View Answer
120) Select the one with incorrect class.

A)

(Asteroidea-Sea star

B)

Ophiuroida-Brittle star

C)

Echinoided-Sea urchin

D)

Holothuroidea-Sea squid

View Answer
121) Which one of the following is not a part of the chordate body?

A)

Urostyle

B)

Pygostyle

C)

Anal style

D)

Endostyle

View Answer
122) Whales are included in the same taxonomic class as a

A)

shark

B)

sea horse

C)

gorilla

D)

crocodile

View Answer
123) Which of the following can be seen only under the electron microscope?

A)

Ribosomes

B)

Leucoplasts

C)

Chloroplasts

D)

Chromosomes

View Answer
124) Desmosomes are concerned with

A)

cytolysis

B)

cell division

C)

cell adherence

D)

cellular excretion

View Answer
125) Centromere is required for

A)

replication of DNA

B)

cytdplasmic cleavage

C)

chromosome segregation

D)

poleward movement of chromosomes

View Answer
126) Chemical nature of silk is

A)

chitin

B)

lipid

C)

carbohydrate

D)

protein

View Answer
127) DNA strands are antiparallel because of

A)

hydrogen bonds

B)

glycosidic bonds

C)

disulphide bonds

D)

phosphodiester bonds

View Answer
128) Heat-resistant enzymes are known to occur in

A)

camel

B)

viruses

C)

kangaroo rat

D)

blue-green algae

View Answer
129) Genes A and B are necessary for normal hearing, What is the possible genotype of a normal child of deaf mother/father?

A)

AaBb

B)

aaBB

C)

aabb

D)

Aabb

View Answer
130) Chromosomal imbalance is most frequent during which of the following stages of human development?

A)

Foetal

B)

Embryonic

C)

Adult

D)

Childhood

View Answer
131) Which of the following enzymes is not required for DNA synthesis?

A)

Ligase

B)

DNAse

C)

DNA polymerase

D)

RNA polymerase

View Answer
132) A potent inhibitor of protein synthesis that acts as an analogue of aminoacyl tRNA is

A)

rifampicin

B)

puromycin

C)

mitomyocin

D)

streptomycin

View Answer
133) The immediate product of transcription in eukaryotes will be

A)

hn-RNA

B)

mRNA

C)

cDNA

D)

sn-RNA

View Answer
134) How many chromosomes are there in a spermatid of man?

A)

24

B)

23

C)

48

D)

46

View Answer
135) Which of the arbitrary values of DPD, OP and TP appear correct for a turgid cell?

A)

\[\text{DPD 02 atm; OP 07; TP 5 atm}\]

B)

\[\text{DPD}\,\text{00}\,\text{atm;}\,\text{OP}\,\text{15}\,\text{atm;TP15}\,\text{atm}\]

C)

\[\text{OPD}\,\text{10}\,\text{atm;}\,\text{OP}\,\text{15}\,\text{atm;TP}\,\text{6}\,\text{atm}\]

D)

\[\text{ }\!\!~\!\!\text{ DPD 05 atm; OP 12}\,\text{atm; TP 7 atm}\]

View Answer
136) The sarcoplasmic reticulum of skeletal muscle is a

A)

form of rough endoplasmic reticulum

B)

site of glycogen storage and degradation to glucose

C)

site into which calcium is released during muscle relaxation

D)

site of a calcium-binding protein and a calcium-activated ATPase ,

View Answer
137) Which of the following inhibit gastric \[\text{HCl}\]secretion during a meal?

A)

pistension of stomach

B)

Distension of duodenum

C)

Sight and smell of food

D)

Presence of peptides in the stomach

View Answer
138) As the \[{{\text{p}}_{\text{C}{{\text{O}}_{\text{2}}}}}\]of the venous blood increases the

A)

volume of the RBCs increases

B)

concentration of \[\text{HCO}_{3}^{-}\]decreases

C)

amount of chloride in RBCs decreases

D)

affinity of the haemoglobin for\[{{\text{O}}_{\text{2}}}\] increases

View Answer
139) Stroke volume can be decreased by

A)

increasing heart rate

B)

decreasing blood pressure

C)

increasing venous pressure

D)

decreasing peripheral resistance

View Answer
140) Glomerular filtration rate would be decreased by

A)

an increase in renal blood flow

B)

compression of the renal capsule

C)

constriction of the efferent arteriole

D)

an increase in afferent arteriole pressure

View Answer
141) Which of the following depresses heart beat?

A)

Vagus

B)

Pericardial

C)

Trigeminal

D)

Spinal accessory

View Answer
142) Glaucoma is due to

A)

increase in intraatrial pressure

B)

increase in intraocular pressure

C)

increase in intravesical pressure

D)

increase in intraventricular pressure

View Answer
143) The effect of insulin on glucose transport is to

A)

permit transport against a concentration gradient

B)

enhance transport through ^the intestinal mucosa

C)

enhance transport across the cell membrane

D)

enhance transport into the brain

View Answer
144) Ethylenegas

A)

slows down ripening of apples

B)

speeds up maturation and ripening of fruits

C)

is saturated hydrocarbon

D)

retards ripening of tomatoes

View Answer
145) The fertilized egg in human female is implanted in the uterus after

A)

one month of fertilization

B)

two months of fertilization

C)

three weeks of fertilization

D)

about seven days of fertilization

View Answer
146) Haustoria producing plants are

A)

commensals

B)

ephimerals

C)

parasites

D)

All of these

View Answer
147) When death rate declines, the population of

A)

old age persons increase

B)

children increase

C)

middle aged persons increase

D)

children and middle aged person decrease

View Answer
148) Astromatiferous leaves are seen in

A)

free-floating hydrophytes

B)

submerged plants

C)

emergent plants

D)

marshy plants

View Answer
149) Gas gangrene is caused by

A)

Clostridium difficile

B)

Clostridium perfringens

C)

Clostridium botulinum

D)

Streptococcus pyrogenes

View Answer
150) Synthesized vaccines are also called

A)

first generation vaccines

B)

second and third generation vaccines

C)

monoclonal vaccines

D)

None of the above

View Answer

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