Solved papers for BCECE Medical BCECE Medical Solved Papers-2009

BCECE Medical Solved Papers-2009 Total Questions - 150

1) A rectangular coil of 100 turns and size \[0.1\times 0.05\] m is placed perpendicular to a magnetic field of 0.1 T. The induced emf when the field drops to 0.05 T in 0.05 s is

A)

0.5V

B)

1. 0V

C)

1.5V

D)

2.0V

View Answer
2) A paramagnetic substance is placed in a weak magnetic field and its absolute temperature T is increased. As a result, its magnetisation

A)

increases in proportion to T

B)

decreases in proportion to \[\frac{1}{T}\]

C)

increases in proportion to \[{{T}^{2}}\]

D)

decreases in proportion to \[\frac{1}{{{T}^{2}}}\]

View Answer
3) The current through a bulb is increased by 1%. Assuming that the resistance of the filament- remains unchanged the power of the bulb will

A)

increase by 1%

B)

decrease by 1%

C)

increase by 2%

D)

decrease by 2%

View Answer
4) You are given two resistances \[{{R}_{1}}\] and \[{{R}_{2}}\]. By using them singly, in series and in parallel, you can obtain four resistances of \[1.5\,\Omega ,\,\,2\,\,\Omega ,\,\,6\,\,\Omega \]. and \[8\,\Omega \]. The values of \[{{R}_{1}}\] and \[{{R}_{2}}\] are

A)

\[1\,\,\Omega ,\,\,7\,\,\Omega \]

B)

\[1.5\,\,\Omega ,\,\,6.5\,\,\Omega \]

C)

\[3\,\,\Omega ,\,\,5\,\,\Omega \]

D)

\[2\,\,\Omega ,\,\,6\,\,\Omega \]

View Answer
5) A wire of length I carrying a current I A is bent into a circle. The magnitude of the magnetic moment is

A)

\[\frac{l{{I}^{2}}}{2\pi }\]

B)

\[\frac{l{{I}^{2}}}{4\pi }\]

C)

\[\frac{{{l}^{2}}I}{2\pi }\]

D)

\[\frac{{{l}^{2}}I}{4\pi }\]

View Answer
6) A parallel beam of white light is reflected from a thin wedge-shaped film. The colour of the fringe at the edge of the wedge will be

A)

white

B)

red

C)

black

D)

violet

View Answer
7) An object is placed at the focus of a convex mirror. If its focal length is 20 cm, the distance of mirror is

A)

10 cm

B)

20 cm

C)

40 cm

D)

None of these

View Answer
8) A convex lens of glass \[(\mu =1.5)\] has a focal length of 8 cm when placed in air. What is the focal length of lens when it is immersed in water \[\left( \mu =\frac{4}{3} \right)\]?

A)

4 cm

B)

8 cm

C)

16cm

D)

32cm

View Answer
9) An LCR series circuit, connected to a source E, is at resonance. Then

A)

the voltage across R is zero

B)

the voltage across R equals applied voltage

C)

the voltage across C is zero

D)

the voltage across L equals applied voltage

View Answer
10) What will be the colour of the sky as seen from the earth if there were no atmosphere?

A)

Black

B)

Blue

C)

Orange

D)

Red

View Answer
11) In a single slit diffraction experiment, the width of the slit is made double its original width. Then the central maximum on the diffraction pattern will become

A)

narrower and fainter

B)

narrower and brighter

C)

broader and fainter

D)

broader and brighter

View Answer
12) An \[\alpha \]-particle and a deuteron projected with equal kinetic energies describe circular paths of radii \[{{r}_{1}}\] and \[{{r}_{2}}\] respectively in a uniform magnetic field. The ratio \[{{r}_{1}}/{{r}_{2}}\] is

A)

1

B)

2

C)

\[\frac{1}{\sqrt{2}}\]

D)

\[\sqrt{2}\]

View Answer
13) The energy in monochromatic X-rays of wavelength \[1\overset{\text{o}}{\mathop{\text{A}}}\,\] is roughly equal to

A)

\[2\times {{10}^{-15}}J\]

B)

\[2\times {{10}^{-16}}J\]

C)

\[2\times {{10}^{-17}}J\]

D)

\[2\times {{10}^{-18}}J\]

View Answer
14) The de-Broglie wavelength of a neutron at \[{{927}^{o}}C\] is \[\lambda \]. What will be its wavelength at\[{{27}^{o}}C\]?

A)

\[\frac{\lambda }{2}\]

B)

\[\lambda \]

C)

\[2\lambda \]

D)

\[4\lambda \]

View Answer
15) A telescope has an objective of focal length 100 cm and an eye-piece of focal length 5 cm. What is the magnifying power of the telescope when it is in normal adjustment?

A)

0.2

B)

2.0

C)

20

D)

200

View Answer
16) An isotropic source of 2 candela produces a light flux equal to

A)

\[2\pi \] lumen

B)

\[4\pi \] lumen

C)

\[6\pi \] lumen

D)

\[8\pi \] lumen

View Answer
17) No photoelectrons are emitted from a metal if the wavelength of the light exceeds 600 nm. The work function of the metal is approximately equal to

A)

\[3\times {{10}^{-16}}J\]

B)

\[3\times {{10}^{-19}}J\]

C)

\[3\times {{10}^{-20}}J\]

D)

\[3\times {{10}^{-22}}J\]

View Answer
18) In Rutherfords a-particle experiment with thin gold foil, 8100 scintillations per minute are observed at an angle of \[{{60}^{o}}\]. The number of scintillations per minute at an angle of \[{{120}^{o}}\] will be

A)

900

B)

2025

C)

32400

D)

4050

View Answer
19) Which of the following gates has the truth table?

A B C

0 0 1

1 0 1

0 1 1

1 1 0

A)

NAND

B)

NOR

C)

XOR

D)

AND

View Answer
20) Which of the junction diodes shown below are forward biased?

A)

B)

C)

D)

View Answer
21) A uniform rod of mass m and length I is held inclined at an angle of \[{{60}^{o}}\] with the vertical. What will be the potential energy of the rod in this position?

A)

Zero

B)

\[\frac{mgl}{4}\]

C)

\[\frac{mgl}{2}\]

D)

\[mgl\]

View Answer
22) A sphere rolls down an inclined plane without slipping. What fraction of its total energy is rotational?

A)

\[\frac{2}{7}\]

B)

\[\frac{3}{7}\]

C)

\[\frac{4}{7}\]

D)

\[\frac{5}{7}\]

View Answer
23) From the top of a building 40 m tall, a boy projects a stone vertically upwards with an initial velocity 10 \[m{{s}^{-1}}\] such that it eventually falls to the ground. After how long will the stone strike the ground? Take \[g=10\,\,m{{s}^{-2}}\]

A)

1 s

B)

2 s

C)

3 s

D)

4 s

View Answer
24) A 150 m long train is travelling from east to west at a speed of 20 \[m{{s}^{-1}}\]. A bird is flying from west to east at a speed of 5 \[m{{s}^{-1}}\]. How long will the bird take to cross the train?

A)

6s

B)

7.5 s

C)

10 s

D)

30 s

View Answer
25) An elastic spring has a length \[{{l}_{1}}\] when it is stretched with a force of 2 N and a length of \[{{l}_{2}}\]when it is stretched with a force of 3N. What will be the length of the spring if it is stretched with force of 5N?

A)

\[({{l}_{1}}+{{l}_{2}})\]

B)

\[\frac{1}{2}({{l}_{1}}+{{l}_{2}})\]

C)

\[(3{{l}_{2}}-2{{l}_{1}})\]

D)

\[(3{{l}_{1}}-2{{l}_{2}})\]

View Answer
26) The density of water at the surface of ocean is\[\rho \]. If the bulk modulus of water is B, what is the density of ocean water at a depth where the pressure is \[n{{\rho }_{0}}\], where \[{{p}_{0}}\] is the atmospheric pressure?

A)

\[\frac{\rho B}{B-(n-1){{p}_{0}}}\]

B)

\[\frac{\rho B}{B+(n-1){{p}_{0}}}\]

C)

\[\frac{\rho B}{B-n{{p}_{0}}}\]

D)

\[\frac{\rho B}{B+n{{p}_{0}}}\]

View Answer
27) What is the torque of force \[\vec{F}=3\,\hat{i}+\hat{j}+5\hat{k}\]acting at point whose position vector is\[\vec{r}=7\,\hat{i}+3\hat{j}+\hat{k}\]?

A)

\[14\,\hat{i}-38\hat{j}+16\,\hat{k}\]

B)

\[4\,\hat{i}+4\hat{j}+6\,\hat{k}\]

C)

\[14\,\hat{i}+38\hat{j}-16\,\hat{k}\]

D)

\[-21\,\hat{i}+3\hat{j}+5\,\hat{k}\]

View Answer
28) Two satellites of masses 3M and M orbit the earth in circular orbits of radii rand3r respectively. The ratio of their speeds is

A)

1 : 1

B)

\[\sqrt{3}\,:1\]

C)

3 : 1

D)

9 : 1

View Answer
29) The dimensions of Reynoldss constant are

A)

\[[{{M}^{0}}{{L}^{0}}{{T}^{0}}]\]

B)

\[[M{{L}^{-1}}{{T}^{-1}}]\]

C)

\[[M{{L}^{-1}}{{T}^{-2}}]\]

D)

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

View Answer
30) The surface tension of soap solution is or. What is the work done in blowing soap bubble of radius r?

A)

\[\pi {{r}^{2}}\sigma \]

B)

\[2\pi {{r}^{2}}\sigma \]

C)

\[4\pi {{r}^{2}}\sigma \]

D)

\[8\pi {{r}^{2}}\sigma \]

View Answer
31) The ratio of rms speed of \[{{O}_{2}}\] to \[{{H}_{2}}\] is

A)

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

B)

4

C)

2

D)

\[\frac{1}{2}\]

View Answer
32) Two rods A and B of different materials are welded together as shown in figure. If their thermal conductivities are \[{{K}_{1}}\] and \[{{K}_{2}}\] the thermal conductivity of the composite rod will be

A)

\[\frac{1}{2}\,pV\]

B)

\[pV\]

C)

\[2pV\]

D)

\[4pV\]

View Answer
33) The wavelength of the radiation emitted by a body depends upon

A)

the nature of its surface

B)

the area of its surface

C)

the temperature of its surface

D)

All the above factors

View Answer
34) An ideal monoatomic gas is taken around the cycle ABCDA as shown in the p - V diagram. The work done during the cycle is given by

A)

\[\frac{1}{2}pV\]

B)

\[pV\]

C)

\[2pV\]

D)

\[4pV\]

View Answer
35) An ideal gas at pressure p is adiabatically compressed so that its density becomes n times the initial value The final pressure of the gas will be \[\left( \gamma =\frac{{{C}_{p}}}{{{C}_{V}}} \right)\]

A)

\[{{n}^{\gamma }}p\]

B)

\[{{n}^{-\gamma }}p\]

C)

\[{{n}^{(\gamma -1)}}p\]

D)

\[{{n}^{(\gamma -1)}}p\]

View Answer
36) The displacement of a travelling wave is given by \[y=2\,\cos \,2\pi (10t-0.008x+0.35)\] Where, \[x\]and y are in centimetre and t in second. What is the phase difference between oscillatory motion at two points separated by a distance of 4 m?

A)

\[2\,\,\pi \]

B)

\[4\,\,\pi \]

C)

\[6\,\,\pi \]

D)

\[8\,\,\pi \]

View Answer
37) A bimetallic strip consists of brass and iron when it is heated it bends into an arc with brass on the convex and iron on the concave side of the arc. This happens because

A)

brass has a higher specific heat capacity than iron

B)

density of brass is more than that of iron

C)

it is easier to bend an iron strip than a brass strip of the same size

D)

brass has a higher coefficient of linear expansion than iron

View Answer
38) Three sound waves of equal amplitudes have frequencies (v - 1), v, (v + 1). They superpose to give beats. The number of beats produced per second will be -

A)

\[v\]

B)

\[v/2\]

C)

2

D)

1

View Answer
39) Which of the following functions does not represent a stationary wave? Here a, b and c are constants.

A)

\[y=a\cos bx\sin ct\]

B)

\[y=a\sin bx\cos ct\]

C)

\[y=a\sin \,(bx+ct)\]

D)

\[y=a\sin \,(bx+ct)+a\sin \,(bx-ct)\]

View Answer
40) The velocity of sound is greatest in

A)

water

B)

air

C)

vacuum

D)

steel

View Answer
41) Due to Doppler effect, the shift in wavelength observed is 0.1, \[\overset{o}{\mathop{A}}\,\], for a star producing wavelength 6000 \[\overset{o}{\mathop{A}}\,\]. The velocity of recession of

A)

2.5 \[km{{s}^{-1}}\]

B)

10 \[km{{s}^{-1}}\]

C)

5 kms

D)

20 \[km{{s}^{-1}}\]

View Answer
42) A body executing linear simple harmonic motion has a velocity of 3 \[m{{s}^{-1}}\] when its displacement is 4 cm and a velocity of 4 \[m{{s}^{-1}}\]when its displacement is 3 cm. What is the amplitude of oscillation?

A)

5 cm

B)

7.5 cm

C)

10 cm

D)

12.5 cm

View Answer
43) Two masses \[{{m}_{1}}\] and \[{{m}_{2}}\] are suspended together by a massless spring of force constant k, as shown in figure. When the masses are in equilibrium, mass \[{{m}_{1}}\], is removed without disturbing the system. The angular frequency of oscillation of mass \[{{m}_{2}}\] is

A)

\[\sqrt{\frac{k}{{{m}_{2}}}}\]

B)

\[\sqrt{\frac{k}{m1}}\]

C)

\[\sqrt{\frac{k{{m}_{1}}}{m_{2}^{2}}}\]

D)

\[\sqrt{\frac{k{{m}_{2}}}{m_{1}^{2}}}\]

View Answer
44) The intensity level of a sound wave is defined by an arbitrary scale. The zero of the scale is taken at the sound wave intensity

A)

\[1\times {{10}^{-10}}W{{m}^{-2}}\]

B)

\[1\times {{10}^{-12}}W{{m}^{-2}}\]

C)

\[1\times {{10}^{-14}}W{{m}^{-2}}\]

D)

\[1\times {{10}^{-16}}W{{m}^{-2}}\]

View Answer
45) A pendulum bob of mass m carrying a charge q is at rest with its string making an angle 9 with the vertical in a uniform horizontal electric field E, The tension in the string is

A)

\[\frac{mg}{\sin \theta }\] and \[\frac{qE}{\cos \theta }\]

B)

\[\frac{mg}{\cos \theta }\] and \[\frac{qE}{\sin \theta }\]

C)

\[\frac{qE}{mg}\]

D)

\[\frac{mg}{qE}\]

View Answer
46) A galvanometer of resistance \[10\,\,\Omega \]. gives full-scale deflection when 1 mA current passes through it. The resistance required to convert it into a voltmeter reading upto 2.5 V is

A)

\[24.9\,\,\Omega \]

B)

\[249\,\,\Omega \]

C)

\[2490\,\,\Omega \]

D)

\[24900\,\,\Omega \]

View Answer
47) The current inside an electrolytic cell is carried by

A)

positive ions

B)

negative ions

C)

both positive and negative ions

D)

electrons

View Answer
48) The electric potential V (in volt) varies with x (in metre) according to the relation\[V=(5+4{{x}^{2}})\]. The force experienced by a negative charge of \[2\times {{10}^{-6}}C\] located at x = 0.5 m is

A)

\[2\times {{10}^{-6}}N\]

B)

\[4\times {{10}^{-6}}N\]

C)

\[6\times {{10}^{-6}}N\]

D)

\[8\times {{10}^{-6}}N\]

View Answer
49) A parallel plate capacitor of plate area A has a charge Q. The force on each pi ate of the capacitor is

A)

\[\frac{2{{Q}^{2}}}{{{\varepsilon }_{0}}A}\]

B)

\[\frac{{{Q}^{2}}}{{{\varepsilon }_{0}}A}\]

C)

\[\frac{{{Q}^{2}}}{2{{\varepsilon }_{0}}A}\]

D)

zero

View Answer
50) In Millikans oil drop experiment, an oil drop is observed to move vertically upwards. The upward motion of the drop is due to

A)

gravity

B)

viscosity

C)

buoyancy

D)

electric field

View Answer
51) Which one of these is an important polysaccharide present in plants?

A)

Glucose

B)

Glycogen

C)

Sucrose

D)

Starch

View Answer
52) Cannizaro reaction would be given by

A)

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

B)

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

C)

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

D)

\[{{C}_{2}}{{H}_{5}}CO{{C}_{2}}{{H}_{5}}\]

View Answer
53) \[C{{H}_{3}}C\equiv CH\xrightarrow[+H{{g}^{2+}},{{60}^{o}}C]{{{H}_{2}}S{{O}_{4}}}?\]

A)

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

B)

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

C)

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

D)

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

View Answer
54) In which of the following can peroxide effect operate?

A)

\[C{{H}_{3}}C{{H}_{2}}CH=C{{H}_{2}}+HCl\]

B)

\[C{{H}_{3}}C{{H}_{2}}CH=C{{H}_{2}}+HBr\]

C)

\[C{{H}_{3}}CH=CH\,.\,C{{H}_{3}}+HBr\]

D)

\[C{{H}_{3}}C{{H}_{2}}CH=C{{H}_{2}}+HI\]

View Answer
55) The term quaternary structure is used in the context of

A)

carbohydrates

B)

vitamins

C)

proteins

D)

nucleic acids

View Answer
56) Aspirin is

A)

antibiotic

B)

sedative

C)

tranquilizer

D)

antipyretic

View Answer
57) The following is a coordination compound of iron

A)

chlorophyll

B)

Mohrs salt

C)

haemoglobin

D)

vitamin \[{{B}_{12}}\]

View Answer
58) This metal is extracted from its ore by formation of a cyanide complex

A)

Ag

B)

Cu

C)

Al

D)

Zn

View Answer
59) Smoke is an example of

A)

emulsion

B)

aerosol

C)

gel

D)

foam

View Answer
60) Propan-2-ol + ethanoic acid \[\xrightarrow{{}}\]?

A)

\[{{(C{{H}_{3}})}_{2}}CHCOOC{{H}_{3}}\]

B)

\[{{(C{{H}_{3}})}_{2}}COOCH{{(C{{H}_{3}})}_{2}}\]

C)

\[C{{H}_{3}}COOC{{H}_{2}}C{{H}_{3}}\]

D)

\[{{(C{{H}_{3}})}_{2}}CHCOOC{{H}_{2}}C{{H}_{3}}\]

View Answer
61) Which of the following gives RNC when treated with \[CHC{{l}_{3}}\] and KOH?

A)

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

B)

\[{{R}_{2}}NH\]

C)

\[{{R}_{4}}{{N}^{+}}C{{l}^{-}}\]

D)

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

View Answer
62) Which of the following is a soap?

A)

Sodium acetate

B)

Magnesium butyrate

C)

Sodium palmitate

D)

Palmitic acid

View Answer
63) The C-C bond dissociation energy in kcal/mol is

A)

8.1

B)

0.81

C)

81

D)

810

View Answer
64) A compound has four \[s{{p}^{3}}\] hybridised covalent bonds. Its shape is

A)

linear

B)

square planar

C)

octahedral

D)

tetrahedral

View Answer
65) The resonance energy of benzene in kcal/mol is about

A)

\[\sim 20\]

B)

\[\sim 40\]

C)

\[\sim 60\]

D)

\[\sim 80\]

View Answer
66) 1 mole of \[C{{O}_{2}}\] contains

A)

\[6\times {{10}^{23}}\] atoms of C

B)

\[6\times {{10}^{23}}\] atoms of O

C)

\[18\times {{10}^{23}}\] molecules of \[C{{O}_{2}}\]

D)

3 g-atoms of \[C{{O}_{2}}\]

View Answer
67) Rutherfords famous experiment with \[\alpha \]-particles used this metal

A)

Ni

B)

Au

C)

Fe

D)

Zn

View Answer
68) The charge on an electron in Coulombs is

A)

\[1.602\times {{10}^{-19}}\]

B)

\[1.062\times {{10}^{-19}}\]

C)

\[1.620\times {{10}^{-19}}\]

D)

\[1.006\times {{10}^{-19}}\]

View Answer
69) The number of subshells for a shell with principal quantum number n is

A)

n

B)

n + 1

C)

n -1

D)

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

View Answer
70) Which of the following pairs of atomic numbers represents s-block elements?

A)

7, 15

B)

5, 12

C)

9, 17

D)

3, 11

View Answer
71) For a system in equilibrium

A)

\[\Delta G=0\]

B)

\[\Delta G>0\]

C)

\[\Delta G<0\]

D)

\[\Delta H=0\]

View Answer
72) Which of the following will produce the highest rise in temperature?

A)

67 mL of 1 M NaOH + 33 mL of 0.5 M \[{{H}_{2}}S{{O}_{4}}\]

B)

33 mL of 1 M NaOH + 67 mL of 0.5 M \[{{H}_{2}}S{{O}_{4}}\]

C)

40 mL of 1 M NaOH + 60 mL of 0.5 M \[{{H}_{2}}S{{O}_{4}}\]

D)

50 mL of 1 M NaOH + 50 mL of 0.5 M \[{{H}_{2}}S{{O}_{4}}\]

View Answer
73) The standard for atomic mass is

A)

\[_{1}^{1}H\]

B)

\[_{6}^{12}C\]

C)

\[_{6}^{14}C\]

D)

\[_{8}^{14}O\]

View Answer
74) Which of the following involves absorption of energy?

A)

\[Cl+{{e}^{-}}\xrightarrow{{}}C{{l}^{-}}\]

B)

\[{{O}^{-}}+{{e}^{-}}\xrightarrow{{}}{{O}^{2-}}\]

C)

\[O+{{e}^{-}}\xrightarrow{{}}{{O}^{-}}\]

D)

\[S+{{e}^{-}}\xrightarrow{{}}{{S}^{-}}\]

View Answer
75) The successive ionisation energies of an element are 800, 2,000, 3,600, 25,000 and 32,000 kJ/mol. The number of valence electrons are

A)

5

B)

2

C)

3

D)

4

View Answer
76) The first order rate constant for the decomposition of \[{{N}_{2}}{{O}_{5}}\] is \[6.2\times {{10}^{-4}}{{s}^{-1}}\]. The half-life in seconds is nearly

A)

1117.7

B)

111.7

C)

223

D)

160

View Answer
77) The rate constant of a reaction is\[1.2\times {{10}^{-2}}mo{{l}^{-2}}{{L}^{2}}{{s}^{-1}}\]. The order of the reaction is

A)

0

B)

1

C)

2

D)

3

View Answer
78) The oxidation number of 0 in \[O{{F}_{2}}\] is

A)

-2

B)

+1

C)

+2

D)

-1

View Answer
79) The correct relationship is

A)

\[{{K}_{C}}=n\times {{K}_{p}}\]

B)

\[{{K}_{p}}={{K}_{C}}{{(RT)}^{\Delta {{n}_{g}}}}\]

C)

\[{{K}_{p}}=n\times {{K}_{C}}\]

D)

\[{{K}_{C}}-{{K}_{p}}={{(RT)}^{\Delta N}}\]

View Answer
80) For the reaction, \[2B+AC\], the equilibrium constant is

A)

\[\frac{[A]\,{{[B]}^{3}}}{[C]}\]

B)

\[\frac{[C]}{[A]\,[2B]}\]

C)

\[\frac{[C]}{[A]\,{{[B]}^{2}}}\]

D)

\[\frac{[A]\,[B]}{[C]}\]

View Answer
81) A buffer contains equal concentrations of \[{{X}^{-}}\]and HX. The \[{{K}_{a}}\] for HX is \[{{10}^{-8}}\]. The pH of the buffer is

A)

3

B)

8

C)

7

D)

11

View Answer
82) The metal which gives \[{{H}_{2}}\] on treatment with acid as well as NaOH is

A)

Fe

B)

Cu

C)

Zn

D)

Hg

View Answer
83) Which is isoelectronic with hydride ion?

A)

He

B)

\[H{{e}^{+}}\]

C)

Li

D)

\[{{H}^{+}}\]

View Answer
84) A solution of Na in liquid \[N{{H}_{3}}\] is

A)

green

B)

blue

C)

pink

D)

yellow

View Answer
85) The oxide which gives \[{{H}_{2}}{{O}_{2}}\] on treatment with dilute acid is

A)

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

B)

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

C)

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

D)

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

View Answer
86) During the electrolysis of fused NaCI, this happens at cathode

A)

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

B)

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

C)

reduction of \[C{{l}^{-}}\]

D)

oxidation of \[C{{l}^{-}}\]

View Answer
87) Which of the following is a coloured gas?

A)

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

B)

NO

C)

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

D)

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

View Answer
88) This compound gives off \[{{O}_{2}}\] on moderate heating

A)

HgO

B)

ZnO

C)

CaO

D)

\[A{{l}_{2}}{{O}_{3}}\]

View Answer
89) Plaster of Paris is hardened by

A)

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

B)

hydration

C)

dehydration

D)

changing into \[CaC{{O}_{3}}\]

View Answer
90) The least ionic chloride is formed by

A)

Mg

B)

Ca

C)

Be

D)

Sr

View Answer
91) Aluminium bronze has

A)

90% Cu

B)

50% Ni

C)

90% Sn

D)

50% Cu

View Answer
92) In the thermite welding, this is used

A)

Ca

B)

Al + Fe

C)

Fe

D)

\[Al+F{{e}_{2}}{{O}_{3}}\]

View Answer
93) \[{{K}_{2}}C{{O}_{3}}\] cannot be prepared by Solvay-ammonia process because

A)

\[{{K}_{2}}C{{O}_{3}}\] is fairly soluble in water

B)

it has no water of crystallisation

C)

\[KHC{{O}_{3}}\] is highly soluble in water

D)

\[{{K}_{2}}C{{O}_{3}}\] decomposes in \[{{H}_{2}}O\])

View Answer
94) Glaubers salt is

A)

\[N{{a}_{2}}S{{O}_{4}}\,.\,10{{H}_{2}}O\]

B)

\[FeS{{O}_{4}}\,.\,7{{H}_{2}}O\]

C)

\[ZnS{{O}_{4}}\,.\,7{{H}_{2}}O\]

D)

\[MgS{{O}_{4}}\,.\,7{{H}_{2}}O\]

View Answer
95) The salt responsible for permanent hardness of \[{{H}_{2}}O\] is

A)

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

B)

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

C)

\[NaCl\]

D)

\[MgC{{l}_{2}}\]

View Answer
96) Which of the following carbonium ion is most stable?

A)

\[{{C}_{6}}{{H}_{5}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]

B)

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

C)

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

D)

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

View Answer
97) Which of the following reacts in presence of anhydrous \[AlC{{l}_{3}}\] to give acetophenone?

A)

\[{{C}_{6}}{{H}_{6}}+C{{H}_{3}}COC{{H}_{3}}\]

B)

\[{{C}_{6}}{{H}_{5}}OH+C{{H}_{3}}COC{{H}_{3}}\]

C)

\[{{C}_{6}}{{H}_{5}}OH+C{{H}_{3}}COOH\]

D)

\[{{C}_{6}}{{H}_{6}}+C{{H}_{3}}COCl\]

View Answer
98) The isomers which can be interconverted through rotation around a single bond are

A)

conformers

B)

diastereoisomers

C)

enantiomers

D)

position isomers

View Answer
99) Phenol is the component of this fraction upon fractional distillation of petroleum

A)

light oil

B)

middle Oil

C)

heavy oil

D)

pitch

View Answer
100) Ethyl chloride on treatment with alcoholic alkali gives

A)

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

B)

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

C)

\[{{C}_{2}}{{H}_{5}}OH\]

D)

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

View Answer
101) Total number of pairs of cranial nerves in human is

A)

12

B)

10

C)

6

D)

20

View Answer
102) The target organ for vasopressin is

A)

thyroid

B)

kidneys

C)

gonad

D)

mammary glands

View Answer
103) Dahlia is propagated through

A)

roots

B)

stem

C)

bud

D)

leaf

View Answer
104) Suspension of plant growth due to exogenous control is called

A)

vivipary

B)

germination

C)

quiescence

D)

dormancy

View Answer
105) These induce production of enzymes during seed germination

A)

auxins

B)

cytokinins

C)

ethylene

D)

gibberellins

View Answer
106) Many xerophytes accumulate this in response to stress

A)

glucose

B)

proline

C)

lysine

D)

fatty acids

View Answer
107) Whales show this adaptation strategy

A)

mimicry

B)

hibernation

C)

migration

D)

camouflage

View Answer
108) The bone of the knee cap is called

A)

patella

B)

femur

C)

tibia

D)

fibula

View Answer
109) Osteoporesis is a disorder of

A)

kidney

B)

muscle

C)

bones

D)

heart

View Answer
110) Smell is a function of this lobe

A)

frontal

B)

parietal

C)

occipital

D)

temporal

View Answer
111) The site of glycolysis is

A)

ribosomes

B)

mitochondria

C)

nucleus

D)

cytoplasm

View Answer
112) In respiration, the released energy forms

A)

AMP

B)

ADP

C)

ATP

D)

Glucose

View Answer
113) The number of bases found in RNA are

A)

4

B)

3

C)

5

D)

2

View Answer
114) The pseudouridine loop is present in

A)

DNA

B)

tRNA

C)

mRNA

D)

rRNA

View Answer
115) This is a structural polysaccharide

A)

starch

B)

chitin

C)

amylase

D)

glycogen

View Answer
116) 70S ribosomes have two units. These are

A)

50S + 30S

B)

40S + 30S

C)

50S + 20S

D)

40S + 60S

View Answer
117) The outer face of the outer membrane of Gram negative bacteria contains

A)

peptidoglycans

B)

teichqic acids

C)

lipopolysaccharides

D)

mycoic acid

View Answer
118) These impart rigidity to plasma membrane

A)

phospholipids

B)

sterols

C)

proteins

D)

carbohydrates

View Answer
119) Which one of the following has least similar characters?

A)

Family

B)

Class

C)

Genus

D)

Species

View Answer
120) Blue green algae belong to this kingdom

A)

Plantae

B)

Protista

C)

Fungi

D)

Monera

View Answer
121) Which one of the following has characters of both plant and animal?

A)

Bacteria

B)

Mycoplasma

C)

Euglena

D)

Paramecium

View Answer
122) The shape of the Micrococcus bacteria is

A)

rod

B)

spiral

C)

oval

D)

coil

View Answer
123) What is called Dahlia starch?

A)

Cellulose

B)

Chitin

C)

Inulin

D)

Glycogen

View Answer
124) The fastestenzyme among the following is

A)

urease

B)

trypsin

C)

amylase

D)

carbonic anhydrase

View Answer
125) Km value of an enzyme is substrate concentration at

A)

\[\frac{1}{4}\,{{V}_{\max }}\]

B)

\[2\,{{V}_{\max }}\]

C)

\[\frac{1}{2}\,{{V}_{\max }}\]

D)

\[{{V}_{\max }}\]

View Answer
126) This fungus is not edible

A)

Agaricus

B)

Toadstool

C)

Puffballs

D)

Morchella

View Answer
127) Aflatoxin is produced by a

A)

virus

B)

bacteria

C)

Ascomycota fungi

D)

Basidiomycota fungi

View Answer
128) Number of cotyledons in Pinus seed are

A)

1

B)

2

C)

3

D)

many

View Answer
129) These are called amphibians of plant kingdom

A)

Bryophytes

B)

Brown algae

C)

Green algae

D)

Riccia

View Answer
130) Pigment common to all algae is

A)

alginate

B)

carotenoids

C)

phycocyanin

D)

chlorophyll

View Answer
131) Mycoplasmas are sensitive to

A)

tetracyclines

B)

penicillin

C)

sugars

D)

amino acids

View Answer
132) This bacteria produces a well known insecticide

A)

B. thuringiensis

B)

B. polymyxa

C)

B. brevis

D)

B. licheniformis

View Answer
133) Nutrition in Amoeba is

A)

holophytic

B)

parasitic

C)

holozoic

D)

saprobic

View Answer
134) Which one is an antinutritional factor?

A)

Lysine

B)

Tryptophan

C)

Albumin

D)

Glucosinolates

View Answer
135) Xanthomonas citri is a pathogen responsible for a disease in this crop.

A)

potato

B)

Citrus

C)

tomato

D)

wheat

View Answer
136) Flooding of the field is an effective control measure for this type of pathogen

A)

Fungi

B)

Vacteria

C)

Nematode

D)

Viruses

View Answer
137) Protoplasts of a plant cell are produced by treatment with

A)

Cellulase

B)

Pectinase

C)

PEG

D)

Both [b] and [c]

View Answer
138) Processing of single cell protein generally involves removal of

A)

nucleic acids

B)

fats

C)

carbohydrates

D)

oils

View Answer
139) An animal, which comes out at night and hides during the day is

A)

diurnal

B)

nocturnal

C)

cursorial

D)

arboreal

View Answer
140) Sponges belong to this phylum

A)

Mollusca

B)

Nematoda

C)

Porifera

D)

Chordata

View Answer
141) The percentage of mutant alleles, which are produced spontaneously and is beneficial to the organism is about

A)

0.1

B)

10

C)

50

D)

1

View Answer
142) Isotonic solutions have same

A)

normality

B)

pH

C)

temperature

D)

osmolarity

View Answer
143) These organisms have chloride cells

A)

plants

B)

freshwater fish -

C)

Protozoa

D)

birds

View Answer
144) The major nitrogenous waste of shark is

A)

urea

B)

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

C)

uric acid

D)

amino acid

View Answer
145) Metanephridia is the excretory system in

A)

cockroach

B)

locust

C)

earthworm

D)

birds

View Answer
146) Angiotensin II works as

A)

enzyme

B)

antibody

C)

coenzyme

D)

hormone

View Answer
147) Actih is

A)

an enzyme

B)

a contractile protein

C)

a hormone

D)

a vitamin

View Answer
148) Interferons are

A)

nucleoproteins

B)

glycoproteins

C)

lipoproteins

D)

ribosomal proteins

View Answer
149) This is a primary lymphoid organ

A)

thymus

B)

lymph nodes

C)

spleen

D)

tonsils

View Answer
150) Matching of the following is necessary for successful organ transplant

A)

Rh factor

B)

ABO blood group

C)

MHC antigens

D)

Hypersensitivity

View Answer

Study Package

Buy Now

Solved papers for BCECE Medical BCECE Medical Solved Papers-2009

done BCECE Medical Solved Papers-2009 Total Questions - 150

Study Package

BCECE Medical Solved Papers-2009 Total Questions - 150