Solved papers for BCECE Medical BCECE Medical Solved Papers-2001

BCECE Medical Solved Papers-2001 Total Questions - 150

1) A thin circular ring of mass M and radius R is rotating about its axis with a constant angular speed\[\omega \]. Two blocks, each of mass m are attached gently to the opposite ends of a diameter of the ring the angular speed of the ring will be :

A)

\[\frac{M+2\,m}{M}\omega \]

B)

\[\frac{M}{M+2\,m}\omega \]

C)

\[\frac{M-2\,m}{M+2\,m}\omega \]

D)

\[\frac{2\,M}{M+2\,m}\omega \]

View Answer
2) In a pressure cooker, the food is prepared quickly, the reason is that the :

A)

boiling point of water is raised due to increase in volume

B)

boiling point of water is raised due to the increase in pressure

C)

boiling point of water decreases due to increase in pressure

D)

none of the above

View Answer
3) In the equation \[\left( p+\frac{a}{{{V}^{2}}} \right)\,(V-b)=RT\], where P = pressure, V = volume, a and b are constants, the dimensions of a are :

A)

\[[M{{L}^{5}}{{T}^{-1}}]\]

B)

\[[M{{L}^{-5}}{{T}^{-1}}]\]

C)

\[[M{{L}^{5}}{{T}^{-2}}]\]

D)

\[[{{M}^{-1}}{{L}^{5}}{{T}^{2}}]\]

View Answer
4) Two bulbs have wattage 250 W and 100 W respectively, each rated at 220 V. The ratio of resistances between the two bulbs will be :

A)

2 : 5

B)

5 : 2

C)

3 : 4

D)

4 : 3

View Answer
5) When a current in coil changes from 4 A to 2 A in 0.05 s, emf of 8 V is induced in the coil. The coefficient of self-inductance in the coil is :

A)

0.8 H

B)

0.4 H

C)

0.2 H

D)

0.1H

View Answer
6) If a sphere is rolling, the ratio of its rotational to total energy is given by:

A)

2 : 7

B)

10 : 7

C)

7 : 10

D)

2 : 5

View Answer
7) Water is flowing on the blades of a turbine at a rate of 100 kg/s from a certain spring. If the height of the spring be 100 m, the power transferred to the turbine will be :

A)

100 W

B)

1 kW

C)

10 kW

D)

100 kW

View Answer
8) A bullet \[({{m}_{i}}=25\,g)\] fired with a velocity 400 m/s gets embedded into a bag of sand \[({{m}_{2}}=4.9\,kg)\] suspended by a rope. The velocity gained by the bag is nearly :

A)

2 m/s

B)

4 m/s

C)

8 m/s

D)

0.2 m/s

View Answer
9) The work done to form a layer of soap solution of size \[10\times 10\,cm\] will be : (surface tension of soap solution is \[3\times {{10}^{-2}}N/m\])

A)

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

B)

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

C)

\[3\times {{10}^{-2}}J\]

D)

\[3\times {{10}^{-4}}J\]

View Answer
10) In a transistor \[\beta =100\]. The value of a is :

A)

1

B)

0.99

C)

0.1

D)

0.01

View Answer
11) A bomb of mass 9 kg at rest explodes into two pieces of mass 4 kg and 5 kg. The velocity of 4 kg mass is 15 m/s. What is the kinetic energy of 5 kg mass?

A)

Zero

B)

562.5 J

C)

360 J

D)

180 J

View Answer
12) The velocity of sound at \[{{0}^{o}}C\] is 332 m/s. At what temperature will it be 664 m/s?

A)

\[{{273}^{o}}C\]

B)

\[{{546}^{o}}C\]

C)

\[{{1092}^{o}}C\]

D)

\[{{819}^{o}}C\]

View Answer
13) The equation of a wave moving on a string may be written as \[y=3\cos \pi (100\,t-x)\] where \[x,y\]are in cm and t in second. Its wavelength will be:

A)

5 cm

B)

2 cm

C)

100 cm

D)

3 cm

View Answer
14) A train moves towards a stationary observer with speed 34 m/s. The train sounds a whistle and its frequency registered by the observer is\[{{f}_{1}}\]. If the trains speed is reduced to 17 m/s the frequency registered is \[{{f}_{2}}\]. If the speed of sound is 340 m/s, the ratio \[{{f}_{1}}/{{f}_{2}}\] is :

A)

\[\frac{19}{18}\]

B)

\[\frac{18}{19}\]

C)

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

D)

2

View Answer
15) In a closed organ pipe which of the following notes is not present, if fundamental note is 50 Hz?

A)

100 Hz

B)

150 Hz

C)

250 Hz

D)

None of these

View Answer
16) A monoatomic gas \[(\gamma =5/3)\] at pressure P is suddenly compressed to \[\frac{1}{8}\]th of its volume adiabatically, the pressure of gas is :

A)

\[\frac{43}{3}P\]

B)

8 P

C)

32 P

D)

\[\frac{24}{5}P\]

View Answer
17) An ideal Carnot engine whose efficiency is 40% receives heat at 500 K. If the efficiency is to be 50% the intake temperature for this same exhaust temperature is :

A)

600 K

B)

800 K

C)

900 K

D)

1000 K

View Answer
18) A mixture of gas contains 8 g of oxygen and 7 g of nitrogen. To use the equation \[PV=nRT\], the value of n of such mixture will be :

A)

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

B)

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

C)

2

D)

4

View Answer
19) How many times diatomic gas is should be expanded adiabatically, so as to reduce the root mean square velocity to half?

A)

64

B)

32

C)

16

D)

8

View Answer
20) The masses of three wires of copper are in the ratio 1:2:3 and their lengths are in the ratio 3 : 2 : 1. The ratio of their resistances is :

A)

3 : 2 : 1

B)

1 : 2 : 3

C)

27 : 6 : 1

D)

1 : 6 : 27

View Answer
21) If the length of a conductor is halved, then the conductance will be :

A)

quadrupled

B)

doubled

C)

halved

D)

unchanged

View Answer
22) The vertical component of earths magnetic field is zero at a place whose angle of dip is :

A)

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

B)

\[{{60}^{o}}\]

C)

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

D)

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

View Answer
23) Energy stored in a coil of self-inductance 40 mH carrying a steady current of 2 A is :

A)

80 J

B)

0.08 J

C)

0.8 J

D)

8 J

View Answer
24) Resistance of rod is \[1\,\,\Omega \]. It is bent in the form of square. What is the resistance across adjoint corners?

A)

\[1\,\,\Omega \]

B)

\[3\,\,\Omega \]

C)

\[\frac{3}{16}\,\,\Omega \]

D)

\[\frac{3}{4}\,\,\Omega \]

View Answer
25) A capacitor of capacitance \[1\,\mu F\] is filled with two dielectrics of dielectric constants 4 and 6. What is the new capacitance?

A)

\[10\,\mu F\]

B)

\[5\,\mu F\]

C)

\[4\,\mu F\]

D)

\[7\,\mu F\]

View Answer
26) The focal length of lens is 5 cm. If the least distance of distinct vision is 25 cm the magnification is :

A)

2.1

B)

1

C)

1.1

D)

6

View Answer
27) The critical angle for a medium is \[{{45}^{o}}\]. The refractive index will be :

A)

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

B)

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

C)

\[\sqrt{2}\]

D)

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

View Answer
28) The specific resistance of wire of length 1 m, area of cross-section 0.5 \[{{m}^{2}}\] is \[25\,\,\mu \,\Omega \], The resistance of the wire will be :

A)

\[5\times {{10}^{-5}}\Omega \]

B)

\[3\times {{10}^{6}}\Omega \]

C)

\[46\times {{10}^{6}}\Omega \]

D)

\[2\times {{10}^{6}}\Omega \]

View Answer
29) Two identical wires A and B have the same length L and carry the same current \[I\]. Wire A is bent into a circle of radius R and wire B is bent to form a square of side a. If \[{{B}_{1}}\] and \[{{B}_{2}}\]are the values of magnetic induction at the centre of the circle and the centre of the square respectively, then the ratio of\[{{B}_{1}}/{{B}_{2}}\]is :

A)

\[\frac{{{\pi }^{2}}}{8}\]

B)

\[\frac{{{\pi }^{2}}}{8\sqrt{2}}\]

C)

\[\frac{{{\pi }^{2}}}{16}\]

D)

\[\frac{{{\pi }^{2}}}{16\sqrt{2}}\]

View Answer
30) The force acting on a pole of pole strength 1 Am is \[{{10}^{-4}}N\]. The magnetic field at that point is :

A)

\[11\times {{10}^{-4}}T\]

B)

\[10\times {{10}^{-4}}T\]

C)

\[0.1\times {{10}^{-4}}T\]

D)

\[1\times {{10}^{-4}}T\]

View Answer
31) A tuning fork produces 5 beats/s with another tuning fork B of frequency 256 Hz. On filing fork A only 2 beats are heard per second, the frequency of A before filing is :

A)

251 Hz

B)

254 Hz

C)

261 Hz

D)

256 Hz

View Answer
32) Number of photons of wavelength 600 nm emitted per second by an electric bulb of power 50 W is : (Take \[h=6.6\times {{10}^{-34}}J-s\])

A)

\[{{10}^{19}}\]

B)

\[2\times {{10}^{20}}\]

C)

60

D)

zero

View Answer
33) Half-life of radioactive substance is 3.20 h. What is the time taken for a 75% of substance to be used?

A)

6.38 h

B)

12 h

C)

4.18 days

D)

1.2 days

View Answer
34) TV waves have wavelength range of 1-10 m. Their frequency range will be :

A)

3-30 MHz

B)

30-300 MHz

C)

3-3000 MHz

D)

300-3000 MHz

View Answer
35) Reactance of a capacitor of capacitance C \[\mu F\]for AC frequency \[\frac{400}{\pi }\] Hz is 25 D. The value of C is:

A)

\[50\,\mu F\]

B)

\[25\,\mu F\]

C)

\[100\,\mu F\]

D)

\[75\,\mu F\]

View Answer
36) An electron and a proton have same de-Broglie wavelength, then kinetic energy of the electron is :

A)

infinite

B)

equal to KE of proton

C)

zero

D)

greater than KE of proton

View Answer
37) Relative permeability of iron is 5500. Its magnetic susceptibility is :

A)

5501

B)

\[5500\times {{10}^{-7}}\]

C)

\[5500\times {{10}^{7}}\]

D)

5499

View Answer
38) An example for diamagnetic substances is :

A)

gold

B)

nickel

C)

aluminium

D)

iron

View Answer
39) The impurity atom that should be added to germanium to make it n-type semiconductor is:

A)

aluminium

B)

phosphorus

C)

boron

D)

indium

View Answer
40) An atom of mass number A and atomic number Z emits successively an \[\alpha \]-particle and a, \[\beta \]-particle and y-rays. The mass number and atomic number of the end product, will be :

A)

A - 4, Z - 1

B)

A - 4, Z - 2

C)

A - 1, Z - 4

D)

A, Z + 1

View Answer
41) When R is Rydbergs constant for hydrogen, the wave number of the first line in the Lyman series is :

A)

\[\frac{R}{4}\]

B)

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

C)

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

D)

2R

View Answer
42) A source of sound of frequency 256 Hz is moving towards a wall with a velocity of 5 m/s. The velocity of sound is 330 m/s. The number of beats heard by an observer moving along with the sounding object is :

A)

\[256\times \frac{330}{325}-256\]

B)

\[256-\frac{256\times 330}{335}\]

C)

\[\frac{256\times 330}{325}-\frac{256\times 330}{325}\]

D)

\[256\times \frac{335}{325}-256\]

View Answer
43) The effective capacitance between the points P and Q in the circuit shown in figure, is (capacitance of each capacitor is 1 \[\mu F\]) :

A)

0.4 \[\mu F\]

B)

3 \[\mu F\]

C)

4 \[\mu F\]

D)

2 \[\mu F\]

View Answer
44) What is the resistance of a 40 W lamp which is lighted at full brilliance by a current of \[\frac{1}{3}A\]?

A)

\[450\,\,\Omega \]

B)

\[360\,\,\Omega \]

C)

\[120\,\,\Omega \]

D)

\[13.33\,\,\Omega \]

View Answer
45) The energy gap of silicon is 1.14 eV. The maximum wavelength at which silicon will begin absorbing energy is :

A)

18.855 \[\overset{o}{\mathop{A}}\,\]

B)

108.55 \[\overset{o}{\mathop{A}}\,\]

C)

1085.5 \[\overset{o}{\mathop{A}}\,\]

D)

10855 \[\overset{o}{\mathop{A}}\,\]

View Answer
46) Assuming that the junction diode is ideal, the current through the diode is :

A)

0.02 A

B)

2 A

C)

0.2 A

D)

none of these

View Answer
47) With a resistance R connected in series with galvanometer of resistance \[100\,\,\Omega \], it acts as a voltmeter of range 0 - V. To double the range a resistance of \[1000\,\,\Omega \] is to be connected in series with R. Then the value of-R is:

A)

\[400\,\,\Omega \]

B)

\[900\,\,\Omega \]

C)

\[1100\,\,\Omega \]

D)

\[1000\,\,\Omega \]

View Answer
48) An a-particle can be represented by a :

A)

hydrogen atom

B)

helium ion

C)

hydrogen ion

D)

helium nucleus

View Answer
49) Coefficient of coupling between two coils of self-inductances \[{{L}_{1}}\] and \[{{L}_{2}}\] is unity. It means:

A)

50% flux of \[{{L}_{1}}\] is linked with \[{{L}_{2}}\]

B)

100% flux of \[{{L}_{1}}\] is linked with \[{{L}_{2}}\]

C)

\[\sqrt{{{L}_{1}}}\] time of flux of \[{{L}_{1}}\] is linked with \[{{L}_{2}}\]

D)

none of the above

View Answer
50) State which of the following is correct?

A)

\[{{g}_{m}}=\mu \times {{r}_{p}}\]

B)

\[{{r}_{p}}=\mu \times {{g}_{m}}\]

C)

\[\mu ={{r}_{p}}\times {{g}_{m}}\]

D)

\[\mu =\frac{{{r}_{p}}}{{{g}_{m}}}\]

View Answer
51) Modern periodic table is based on atomic number of the elements. The significance of atomic number was proved by the experiment of:

A)

discovery of X-ray by Roentgen

B)

Mullikans oil drop experiment

C)

Braggs work on X-ray diffraction

D)

Mosleys work on X-ray spectra

View Answer
52) The shape of \[Xe{{O}_{4}}\] molecule is tetrahedral due to:

A)

sp

B)

\[s{{p}^{2}}\]

C)

\[s{{p}^{3}}\]

D)

none of these

View Answer
53) The monomer of natural rubber is :

A)

isoprene

B)

adipic acid

C)

vinyl chloride

D)

acrylonitrile

View Answer
54) Iodoform test is given by:

A)

1-propanol

B)

methanol

C)

2-butanol

D)

1-butanol

View Answer
55) \[0.3\,M\,{{H}_{3}}P{{O}_{3}}\] shows the normality of:

A)

0.3

B)

0.6

C)

0.9

D)

0.1

View Answer
56) At 300 K, the ratio of the average molecular kinetic energy of \[U{{F}_{6}}\] to that of \[{{H}_{2}}\] is :

A)

2 : 7

B)

7 : 2

C)

6 : 2

D)

1 : 1

View Answer
57) Graphite and diamond are :

A)

polymorphs

B)

allotropes

C)

different crystal structure

D)

all of the above

View Answer
58) The correct alternate for the cells spontaneous reaction is :

A)

\[E_{cell}^{o}\] cell should be infinite

B)

\[E_{cell}^{o}\] cell should be zero

C)

\[E_{cell}^{o}\] cell should be positive

D)

\[E_{cell}^{o}\] cell should be negative

View Answer
59) The maximum amount of sulphur is given by :

A)

\[AgS\,({{K}_{sp}}=6\times {{10}^{-29}})\]

B)

\[CuS\,({{K}_{sp}}=4\times {{10}^{-27}})\]

C)

\[PbS\,({{K}_{sp}}=8\times {{10}^{-28}})\]

D)

\[ZnS\,({{K}_{sp}}=8\times {{10}^{-30}})\]

View Answer
60) The highest electronegative element is :

A)

carbon

B)

oxygen

C)

fluorine

D)

nitrogen

View Answer
61) Bromine can be liberated from KBr solution by the action of:

A)

chlorine

B)

NaCI

C)

KI

D)

iodine solution

View Answer
62) The aldehyde can be detected by which of the following?

A)

Tollens reagent

B)

Fehlings solution

C)

Schiffs reagent

D)

All of the above

View Answer
63) Froth floatation method is used for the concentration of:

A)

sulphide ore

B)

oxide ore

C)

chloride ore

D)

amalgams

View Answer
64) The zero dipole moment is shown by :

A)

cis-1, 2-dichloroethylene

B)

trans-1, 2- dichloroethylene

C)

1, 1-dichloroethylene

D)

none of the above

View Answer
65) The correct order of electron affinities of S, N, 0 and \[Cl\] is :

A)

\[O=Cl<S=N\]

B)

\[O<S<Cl<N\]

C)

\[N<O<S<Cl\]

D)

\[O<N<Cl<S\]

View Answer
66) In isotones the atomic number and mass numbers are :

A)

same

B)

different

C)

equal

D)

zero

View Answer
67) One mole of \[C{{O}_{2}}\] contains :

A)

\[18.1\times {{10}^{23}}\] molecules of \[C{{O}_{2}}\]

B)

\[6.02\times {{10}^{23}}\] atom of carbon

C)

3 g of carbon

D)

\[6.02\times {{10}^{23}}\] atoms of oxygen

View Answer
68) The interhalogen compound not formed is :

A)

\[ICl\]

B)

\[I{{F}_{5}}\]

C)

\[Br{{F}_{5}}\]

D)

\[BrC{{l}_{7}}\]

View Answer
69) The element prepared by electrolysis is :

A)

sodium

B)

chlorine

C)

fluorine

D)

bromine

View Answer
70) The element chlorine consists of a mixture of \[75.53%{{\,}_{17}}C{{l}^{35}}\] and \[24.47%{{\,}_{17}}C{{l}^{37}}\] having a mass of 34.97 amu and 36.95 amu, respectively. The atomic weight of chlorine is:

A)

35.25

B)

35.45

C)

36.25

D)

36.45

View Answer
71) The solubility of \[A{{g}_{2}}S\] is \[[{{K}_{sp}}=256\times {{10}^{-6}}]\] :

A)

\[4\times {{10}^{-2}}\]

B)

\[4\times {{10}^{-3}}\]

C)

\[0.4\times {{10}^{-2}}\]

D)

\[0.4\times {{10}^{-3}}\]

View Answer
72) Marsh gas contains :

A)

\[{{C}_{2}}{{H}_{4}}\]

B)

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

C)

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

D)

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

View Answer
73) The ion present in Nesslers reagent is :

A)

\[Hg{{I}_{2}}\]

B)

\[HgI_{4}^{2-}\]

C)

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

D)

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

View Answer
74) Vitamin \[{{B}_{12}}\] contains :

A)

Cu

B)

Fe

C)

Mg

D)

Co

View Answer
75) 720 g of water contains how many moles of water?

A)

20

B)

40

C)

60

D)

80

View Answer
76) \[Zn(s)+C{{u}^{2+}}(aq)\xrightarrow{{}}Cu(s)+Z{{n}^{2+}}(aq)\] The emf of above reaction is 1.10 V at \[{{25}^{o}}C\]. Find emf of cell well when \[[Z{{n}^{2+}}]=0.1\,M\] \[[C{{u}^{2+}}]=0.1M\]

A)

1.10 V

B)

-1.10 V

C)

0.110 V

D)

-0.110 V

View Answer
77) The colour of iodine solution is discharged by shaking it with aqueous solution of:

A)

sodium sulphite

B)

sulphuric acid

C)

sodium sulphate

D)

sodium thiosulphite

View Answer
78) Nitrobenzene on treatment with \[B{{r}_{2}}\]produce :

A)

o, p-bromobenzene

B)

p-b-bromonitrobenzene

C)

m-bromonitrobenzene

D)

none of the above

View Answer
79) The entropy change \[(\Delta S)\] in a system increases as :

A)

solid < liquid < gas

B)

liquid < gas < solid

C)

solid < gas < liquid

D)

gas < solid < liquid

View Answer
80) The element having maximum hydration energy is :

A)

Na

B)

K

C)

Rb

D)

Cs

View Answer
81) The total number of electrons present in all the p-orbitals of bromine is :

A)

7

B)

17

C)

27

D)

37

View Answer
82) The rate constant of third order reaction is :

A)

\[mol\,{{L}^{-1}}{{s}^{-1}}\]

B)

\[mo{{l}^{-2}}\,{{L}^{2}}{{T}^{-1}}\]

C)

\[mo{{l}^{-1}}\,L\,{{s}^{-1}}\]

D)

\[mo{{l}^{-2}}\,{{L}^{-1}}\,{{s}^{-1}}\]

View Answer
83) By the reduction of carbonyl compounds the alcohol not obtained is :

A)

primary alcohol

B)

secondary alcohol

C)

tertiary alcohol

D)

all of the above

View Answer
84) The mixture of gases used for asthma patients is :

A)

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

B)

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

C)

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

D)

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

View Answer
85) Acetate ion have :

A)

two carbon, oxygen double bond

B)

two carbon, oxygen single bond

C)

one carbon, oxygen single bond and one carbon, oxygen double bond

D)

none of the above

View Answer
86) The difference between energy of product and energy of reactant is called :

A)

entropy

B)

heat content

C)

heat of fusion

D)

activation energy

View Answer
87) The most covalent bond is :

A)

C-S

B)

C-0

C)

C-F

D)

C-Br

View Answer
88) A solution is made up of 10 mL of 0.1 N NaOH and 10 mL of \[0.05\,N\,{{H}_{2}}S{{O}_{4}}\]. The pH of solution is :

A)

7

B)

> 7

C)

< 7

D)

none of these

View Answer
89) The addition of 1% alcohol to chloroform acts as a :

A)

positive catalyst

B)

negative catalyst

C)

autocatalyst

D)

none of these

View Answer
90) \[C{{H}_{3}}-CH=CH-C{{H}_{3}}\] on ozonolysis produce:

A)

acetaldehyde

B)

mixture of acetaldehyde and ethyl alcohol

C)

ethyl alcohol

D)

mixture of acetone and acetaldehyde

View Answer
91) Nitroalkane which do not exhibit tautomerism is :

A)

\[{{3}^{o}}-\]nitroalkane

B)

\[{{2}^{o}}-\]nitroalkane

C)

\[{{1}^{o}}-\]nitroalkane

D)

all of these

View Answer
92) The paramagnetic element is :

A)

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

B)

\[S{{c}^{3+}}\]

C)

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

D)

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

View Answer
93) Addition of HBr on propene produce :

A)

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

B)

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

C)

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

D)

none of the above

View Answer
94) Which of the following, is not a planar compound?

A)

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

B)

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

C)

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

D)

None of these

View Answer
95) The saturated pentane have total number of isomers are :

A)

5

B)

4

C)

6

D)

3

View Answer
96) \[Mn{{O}_{2}}(s)+4HCl\,(aq)\xrightarrow{Heat}\] \[MnC{{l}_{2}}(aq)+2{{H}_{2}}O+C{{l}_{2}}(g)\] The equivalent weight of \[Mn{{O}_{2}}\] in the above reaction is :

A)

23.4

B)

33.6

C)

43.5

D)

53.6

View Answer
97) Tetraethyl lead is used as :

A)

fire extinguisher

B)

mosquito repellent

C)

petroleum additive

D)

none of the above

View Answer
98) 4 moles of A are mixed with 4 moles of B and 2 moles of C are formed at equilibrium according to following reaction, \[A+BC+D\]. The value of equilibrium constant is :

A)

1

B)

4

C)

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

D)

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

View Answer
99) The vapour pressure of benzene at a certain temperature is 200 mm Hg. At the same temperature the vapour pressure of a solution containing 2 g of non volatile non electrolyte solid in 78 g of benzene is 195 mm Hg. The molecular weight of solid is :

A)

20

B)

40

C)

60

D)

80

View Answer
100) The metal not present in hard water is :

A)

Ca

B)

Na

C)

Mg

D)

Fe

View Answer
101) Cohesion-tension theory regarding ascent of sap was given by :

A)

Dixon and Jolly

B)

J.C. Bose

C)

Christian Wolf

D)

Godlewski

View Answer
102) Which among the following is a synthetic plant hormone?

A)

IAA

B)

GA

C)

2, 4-D

D)

ABA

View Answer
103) Waggle dance of honey bee indicates direction of:

A)

food source

B)

mating call

C)

enemy

D)

all of these

View Answer
104) What is the benefit from pollen culture?

A)

Production of hybrid species

B)

Rare plant species can be preserve

C)

Haploid plants can be produced

D)

None of these

View Answer
105) Embryo sac of an angiospermic plant is:

A)

male gametophyte

B)

female gametophyte

C)

male sporophyte

D)

female sporophyte

View Answer
106) \[S{{O}_{2}}\] affects :

A)

nuclear membrane

B)

cell wall

C)

mitochondria

D)

all membrane system

View Answer
107) Which among the following is an air pollution indicator?

A)

Algae

B)

Lichen

C)

Fungi

D)

Ferns

View Answer
108) Biological equilibrium can be maintained between :

A)

producer and consumer

B)

consumer and decomposer

C)

producer and decomposer

D)

producer, consumer and decomposer

View Answer
109) Velamen tissue is found in :

A)

mesophytes

B)

epiphytes

C)

hydrophytes

D)

xerophytes-

View Answer
110) Pneumatophores are characteristic feature of:

A)

Hydrilla

B)

Rhizophora

C)

Typha

D)

None of these

View Answer
111) Which enzyme is proved to be very useful in genetic engineering?

A)

Telomerases

B)

Polymerases

C)

Endonucleases

D)

Hydrolases

View Answer
112) Phytoplanktons are an important biotic component of:

A)

grassland ecosystem

B)

pond ecosystem

C)

forest ecosystem

D)

none of these

View Answer
113) Which one is produced during cyclic photo-phosphorylation ?

A)

ATP and \[NADP{{H}_{2}}\]

B)

ATP only

C)

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

D)

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

View Answer
114) Glycolysis takes place in ;

A)

cytoplasm

B)

nucleus

C)

plastid

D)

mitochondria

View Answer
115) Which one is hexose sugar?

A)

Mannose

B)

Galactose

C)

Both [a] and [ b]

D)

Cellulose

View Answer
116) Tetradynamous conditions is found in family :

A)

Malvaceae

B)

Solanaceae

C)

Brassicaceae

D)

Liliaceae

View Answer
117) Nucleoside is :

A)

polymer of nucleic acid

B)

phosphoric acid + ba2se

C)

phosphoric acid + sugar + base

D)

sugar + base

View Answer
118) In a fully turgid plant cell which one is zero?

A)

Equal to turgor pressure

B)

Equal to wall pressure

C)

DPD

D)

None of these

View Answer
119) Coconut is which type of fruit?

A)

Drupe

B)

Cypsela

C)

Berry

D)

Cremocarp

View Answer
120) Formation of sex cell was first seen in :

A)

pteridophytes

B)

bryophytes

C)

gymnosperm

D)

angiosperm

View Answer
121) DNA is a genetic material was proved by

A)

Griffith

B)

Linus Pauling

C)

Meselson and Stahl

D)

Watson

View Answer
122) Jumping genes are referred to :

A)

exon

B)

intron

C)

cytoplasmic particles

D)

transposable

View Answer
123) Which organelle is not found in an animal cell?

A)

Peroxysome

B)

Ribosome

C)

Lysosome

D)

None of these

View Answer
124) Haemophilia (sickle cell anaemia) is a:

A)

deficiency disorder

B)

male sex disorder

C)

female sex disorder

D)

autosomal sex disorder

View Answer
125) Kinetochore is :

A)

a type of chromophore

B)

part of chromosome at centromere

C)

part of centrosome

D)

constituent of chromomere

View Answer
126) Fully mature larva of frog respire by:

A)

skin

B)

gills

C)

lungs

D)

buccal cavity

View Answer
127) Haematocrit value gives :

A)

amount of RBC in blood

B)

number of WBC in blood

C)

amount of plasma in blood

D)

haemoglobin concentration in blood

View Answer
128) Different colours of frog skins are controlled by:

A)

nervous system

B)

hormones

C)

both [a] and [b]

D)

different kinds of melanocytes

View Answer
129) Sex determination ratio in an organism is given by \[\frac{X}{A}=15\], then organism will be:

A)

male

B)

female

C)

super female

D)

intersex

View Answer
130) Nissls granules are :

A)

RNA bodies

B)

DNA

C)

carbohydrate

D)

protein

View Answer
131) Tubulin fibre is present in :

A)

cilia

B)

flagella

C)

microtubuies

D)

all of these

View Answer
132) Rhabditiform is the larva of :

A)

Hydra

B)

Platyhelminthes

C)

Ascaris

D)

Earthworm

View Answer
133) Which among the following is not skeleton eye muscle?

A)

Medial reetus

B)

Lateral reetus

C)

Ciliary muscle

D)

Oblique muscle

View Answer
134) Soil which is carried by air and deposited :

A)

alluvial

B)

colluvial

C)

eolian

D)

glacial

View Answer
135) Kidney of frog is :

A)

pronephric

B)

mesonephric

C)

metanephric

D)

none of these

View Answer
136) Gonads in Hydra develops from :

A)

epithelio muscular cell

B)

interstitial cells

C)

archeocyte cells

D)

singing cells

View Answer
137) Sandfly spreads a particular type of disease by its :

A)

proboscis

B)

salivary gland

C)

mandible

D)

none of these

View Answer
138) Oak silkwrom is:

A)

Antherea roylei

B)

Apis florea

C)

Bombyx mori

D)

Clarias batrachus

View Answer
139) Which one causes water bloom?

A)

Red algae

B)

Fungi

C)

Green algae

D)

Fern

View Answer
140) Enterogastrone is present in :

A)

stomach

B)

small intestine

C)

oesophagus

D)

both [a] and [b]

View Answer
141) Gambusia feeds upon :

A)

maggots

B)

insects

C)

Hydra

D)

larvae of mosquito

View Answer
142) At which research institute medicine regarding antivenom is made ?

A)

CDRI (Lucknow)

B)

AIIMS (Delhi)

C)

HRT(Mumbai)

D)

ITRC (Lucknow)

View Answer
143) Sewage water can be purified for recycling with the action of:

A)

aquatic plant

B)

penicillin

C)

micro-organisms

D)

fishes

View Answer
144) Golden Sela Rice is a rice variety enriched in:

A)

P-carotene

B)

lysine

C)

vitamin- C

D)

iron

View Answer
145) Which of the following is true moss?

A)

Irish moss

B)

Bog moss

C)

Club moss

D)

Reindeers moss

View Answer
146) Factors relating to form and behaviour of the earths surface are called :

A)

edaphic

B)

tophographic

C)

climatic

D)

biotic

View Answer
147) Which ecological pyramid can never occur in an inverted form?

A)

Pyramid of number

B)

Pyramid of biomass

C)

Pyramid of energy

D)

Pyramid species richness

View Answer
148) Ophiasaurus belong to :

A)

Amphibia

B)

Pisces

C)

Reptilia

D)

Mammalia

View Answer
149) The poisnous fluid present in the nematocyst of Hydra is :

A)

toxin

B)

venom

C)

haemation

D)

hypnotoxin

View Answer
150) Epistasis implies :

A)

one pair of genes can completely mask the expression of another pair of genes

B)

on pair of genes independently controls a particular phenotype

C)

one parr of genes enhances the phenotype expression of another pair of genes

D)

many genes collectively control a particular phenotype

View Answer

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done BCECE Medical Solved Papers-2001 Total Questions - 150

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BCECE Medical Solved Papers-2001 Total Questions - 150