Solved papers for JCECE Medical JCECE Medical Solved Paper-2007

JCECE Medical Solved Paper-2007 Total Questions - 150

1) A simple pendulum is made of a body which a hollow sphere is containing mercury suspended by means of a wire. If a little mercury is drained off, the period of pendulum will

A)

remain unchanged

B)

increase

C)

decrease

D)

become erratic

View Answer
2) Two balloons are filled, one with pure He gas and the other by air, respectively. If the pressure and temperature of these balloons are same then the number of molecules per unit volume is

A)

more in the He filled balloon

B)

same in both balloons

C)

more in air filled balloon

D)

in the ratio of 1 : 4

View Answer
3) Which of the following logic gates is an universal gate?

A)

OR

B)

NOT

C)

AND

D)

NAND

View Answer
4) We consider a thermodynamic system. If \[\text{ }\!\!\Delta\!\!\text{ U}\]represents the increase in its internal energy and W the work done by the system, which of the following statements is true?

A)

\[\Delta U=-W\] in an adiabatic process

B)

\[\Delta U=W\] in an isothermal process

C)

\[\Delta U=-W\]in an isothermal process

D)

\[\Delta U=W\] in an adiabatic process

View Answer
5) Aerofils are so designed that the speed of air

A)

on top side is more than on lower side

B)

on fop side is less than on lower side,

C)

is same on both sides

D)

is turbulent

View Answer
6) According to Bernoullis equation \[\frac{P}{\rho g}+h+\frac{1}{2}\frac{{{v}^{2}}}{g}=\text{constant}\] The terms A, B and C are generally called respectively:

A)

gravitational head, pressure head and velocity head

B)

gravity, gravitational head and velocity head

C)

pressure head, gravitational head and velocity head

D)

gravity, pressure and velocity head

View Answer
7) The time of reverberation of a room A is one second. What will be the time (in seconds) of reverberation of a room, having all the dimensions double of those of room A?

A)

2

B)

4

C)

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

D)

1

View Answer
8) For sky wave propagation of 10 MHz signal, what should be the minimum electron density in ionosphere?

A)

\[\tilde{\ }1.2\times {{10}^{12}}{{m}^{-3}}\]

B)

\[\tilde{\ }{{10}^{6}}\,{{m}^{-3}}\]

C)

\[\tilde{\ }{{10}^{14}}\,{{m}^{-3}}\]

D)

\[\tilde{\ }{{10}^{22}}\,{{m}^{-3}}\]

View Answer
9) If the mass of moon is \[\frac{\text{M}}{\text{81}}\text{,}\]where M is the mass of earth, find the distance of the point from the moon, where gravitational field due to earth and moon cancel each other. Given that distance between earth and moon is 60R, where R is the radius of earth.

A)

6R

B)

BR

C)

2R

D)

4R

View Answer
10) 27 small drops each having charge q and radius r coalesce to from big drop. How many times charge and capacitance will become?

A)

3, 27

B)

27, 3

C)

27, 27

D)

3, 3

View Answer
11) The magnetic moment has dimensions of

A)

\[[LA]\]

B)

\[[{{L}^{2}}A]\]

C)

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

D)

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

View Answer
12) Which of the following circular rods, (given radius r and length\[l\]) each made of the same material and whose ends are maintained at the same temperature will conduct most heat?

A)

\[r=2{{r}_{0}};l=2{{l}_{0}}\]

B)

\[r=2{{r}_{0}};l={{l}_{0}}\]

C)

\[r={{r}_{0}};l={{l}_{0}}\]

D)

\[r={{r}_{0}};l=2{{l}_{0}}\]

View Answer
13) For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is

A)

2

B)

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

C)

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

D)

\[\sqrt{2}\]

View Answer
14) The current in the given circuit is

A)

0.3 A

B)

0.1 A

C)

0.4 A

D)

0.2 A

View Answer
15) Interference was observed in an interference chamber when air was present. Now, the chamber is evacuated and if the same light is used, a careful observation will show

A)

no interference

B)

interference with bright band

C)

interference with dark bands

D)

interference in which breadth of the fringe will be slightly increased

View Answer
16) When a charged particle moving with velocity \[\text{\vec{v}}\]is subjected to a magnetic field of induction \[\text{\vec{B},}\] the force on it is non-zero. This implies that

A)

angle between \[\text{\vec{v}}\]and \[\text{\vec{B},}\] is necessarily \[90{}^\circ \]

B)

angle between\[\text{\vec{v}}\]and\[\text{\vec{B},}\]can have any value other than \[\text{9}{{\text{0}}^{o}}\]

C)

angle between\[\text{\vec{v}}\]and \[\text{\vec{B},}\]can have any value other than zero and \[{{180}^{o}}\]

D)

angle between \[\text{\vec{v}}\]and \[\text{\vec{B},}\]is either zero or \[{{180}^{o}}\]

View Answer
17) A article moves along a straight line OX. At a time t (in seconds) the distance \[x\](in metres) of the particle from O is given by \[x=40+12t-{{t}^{3}}\] How long would the particle travel before coming to rest?

A)

24 m

B)

40 m

C)

56 m

D)

16 m

View Answer
18) Which one of the following statements is true?

A)

Both light and sound waves in air are transverse

B)

The sound waves in air are longitudinal while the light waves are transverse

C)

Both light and sound waves in air are longitudinal

D)

Both light and sound waves can travel in vacuum

View Answer
19) When power is drawn from the secondary coil of the transformer, the dynamic resistance

A)

increases

B)

decreases

C)

remains unchanged

D)

changes erratically

View Answer
20) A reference frame attached to the earth

A)

is an inertial frame by definition

B)

cannot be an inertial frame because earth is revolving round the sun

C)

is an inertial frame because Newtons laws are applicable

D)

is an inertial frame because the earth is rotating about its own axis

View Answer
21) Pressure of an ideal gas is increased by keeping temperature constant. What is the effect on kinetic energy of molecules?

A)

Increase

B)

Decrease

C)

No change

D)

Cant be determined

View Answer
22) What maximum frequency can be reflected from ionosphere?

A)

5 MHz

B)

6 GHz

C)

5 kHz

D)

500 MHz

View Answer
23) A telescope has focal length of objective and eyepiece as 200 cm and 5 cm respectively. What is magnification of telescope?

A)

40

B)

80

C)

50

D)

0.01

View Answer
24) A small disc of .radius 2 cm is cut from a disc of radius 6 cm. If the distance between their centres is 3.2 cm, what is the shift in the centre of mass of the disc?

A)

0.4 cm

B)

2.4 cm

C)

1.8 cm

D)

1.2 cm

View Answer
25) Which of the following is not a process involved in fabrication of 1C?

A)

Polymerization

B)

Diffusion

C)

Photolithography

D)

Metallisation

View Answer
26) Permanent magnet has properties retentivity and coercivity respectively

A)

high-high

B)

low-low

C)

. low-high

D)

high-low

View Answer
27) Hydrogen bomb is based upon

A)

fission

B)

fusion

C)

chemical reaction

D)

transmutation

View Answer
28) What is not true for equipotential surface for uniform electric field?

A)

Equipotential surface is flat

B)

Equipotential surface is spherical

C)

Electric lines are perpendicular to equipotential surface

D)

Work done is zero

View Answer
29) A closed organ pipe of length 20 cm is sounded with tuning fork in resonance. What is the frequency of tuning fork? \[(v=332\,m/s)\]

A)

300 Hz

B)

350 Hz

C)

375 Hz

D)

415 Hz

View Answer
30) Two identical springs of spring constant k are connected in series and parallel as shown in figure. A mass M is suspended from them. The ratio of their frequencies of vertical oscillation will be

A)

2:1

B)

1.5

C)

2.1

D)

2.5

View Answer
31) The area of the acceleration-displacement curve of a body gives

A)

impulse

B)

change in momentum per unit mass

C)

change in KE per unit mass

D)

total change in energy

View Answer
32) The speed of earths rotation about its axis is \[\omega .\]Its speed is increased to\[x\]times to make the effective acceleration due to gravity equal to zero at the equator. Then \[x\] is

A)

1

B)

8.5

C)

17

D)

34

View Answer
33) Hard X-rays for the study of fractures in bones should have a minimum wavelength of \[{{10}^{-11}}m.\] The accelerating voltage for electrons in X-ray machine should be

A)

\[<\,124\,kV\]

B)

\[>\,124\,kV\]

C)

between 60 kV and 70 kV

D)

= 100 kV

View Answer
34) In photoelectric effect, the electrons are ejected from metals if the incident light has a certain minimum

A)

wavelength

B)

frequency

C)

amplitude

D)

angle of incidence

View Answer
35) A capacitor having capacitance \[1\,\mu F\]with air, is filled with two dielectrics as shown. How many times capacitance will increase?

A)

12

B)

6

C)

8/3

D)

3

View Answer
36) A leaf which contains only green pigments, is illuminated by a laser light of wavelength \[\text{0}\text{.6328 }\!\!\mu\!\!\text{ m}\text{.}\]It would appear to be

A)

brown

B)

black

C)

red

D)

green

View Answer
37) The operation of a nuclear reactor is said to be critical, if the multiplication factor \[(k)\] has a value

A)

1

B)

1.5

C)

2.1

D)

2.5

View Answer
38) A galvanometer having a resistance of \[8\,\Omega \]is shunted by a wire of resistance \[2\,\Omega .\] If the total current is 1 A, the part of it passing through the shunt will be

A)

0.25 A

B)

0.8 A

C)

0.2 A

D)

0.5 A

View Answer
39) Flash light equipped with a new set of batteries, produces bright white light. As the batteries wear out

A)

the light intensity gets reduced with no change in its colour

B)

light colour changes first to yellow andthen red with no change in intensity

C)

it stops working suddenly while giving white light

D)

colour changes to red and also intensity gets reduced

View Answer
40) If alpha, beta and gamma rays carry same momentum, which has the longest wavelength?

A)

Alpha rays

B)

Beta rays

C)

Gamma rays

D)

None, all have same wavelength

View Answer
41) An amplifier has a voltage gain \[{{A}_{v}}=1000.\]The voltage gain in dB is

A)

30 dB

B)

60 dB

C)

3 dB

D)

20 dB

View Answer
42) When you make ice cubes, the entropy of water

A)

does not change

B)

increases

C)

decreases

D)

may either increase or decrease depending on the process used

View Answer
43) Half-lives of two radioactive substances A and B are respectively 20 min and 40 min. Initially the samples of A and B have equal number of nuclei. After 80 min the ratio of remaining number of A and B nuclei is

A)

1 : 16

B)

4 : 1

C)

1:4

D)

1 : 1

View Answer
44) If equation   of   a   sound   wave   is \[y=0.0015\sin (62.8x+314t)\] then    its wavelength will be

A)

0.1 unit

B)

2 unit

C)

0.3 unit

D)

0.2 unit

View Answer
45) A projectile is thrown in the upward direction making an angle of \[{{60}^{0}}\] with the horizontal direction with a velocity of \[147\,m{{s}^{-1}}.\] Then the time after which its inclination with the horizontal is \[{{45}^{o}},\] is

A)

15s

B)

10.98 s

C)

5.49 s

D)

2.745 s

View Answer
46) A motor cycle is going on an overbridge of radius R. The driver maintains a constant speed. As the motor cycle is ascending on the overbridge, the normal force on it

A)

increases

B)

decreases

C)

remains the same

D)

fluctuates erratically

View Answer
47) If we throw a body upwards with velocity of \[4\text{ }m/s,\] at what height does its kinetic energy reduce to half of the initial value? (Take\[g=10\,m{{s}^{-2}}\])

A)

4 m

B)

2 m

C)

1 m

D)

0.4 m

View Answer
48) Two glass plates are separated by water. If surface tension of water is 75 dynes/cm and area of each plate wetted by water is \[\text{8}\,\text{c}{{\text{m}}^{\text{2}}}\]and the distance between the plates is 0.12 mm, then the force applied to separate the two plates is

A)

\[{{10}^{2}}\]dyne

B)

\[{{10}^{4}}\] dyne

C)

\[{{10}^{5}}\]dyne

D)

\[{{10}^{6}}\]dyne

View Answer
49) Which of the following is true for rays coming from infinity?

A)

Two images are formed

B)

Continuous image is formed between focal points of upper and lower lens

C)

One image is formed

D)

None of the above

View Answer
50) The north pole of a long horizontal bar magnet is being brought closer to a vertical conducting plane along the perpendicular direction. The direction of the induced current in the conducting plane will be

A)

horizontal

B)

vertical

C)

clockwise

D)

anticlockwise

View Answer
51) Calcium carbide reacts with \[{{\text{H}}_{\text{2}}}\text{O}\]to produce

A)

ethane

B)

methane

C)

ethylene

D)

acetylene

View Answer
52) Propyne and propene can be distinguished by

A)

\[\text{dil}\text{.}\,\text{KMn}{{\text{O}}_{4}}\]

B)

\[\text{conc}\text{.}\,{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]

C)

\[\text{AgN}{{\text{O}}_{\text{3}}}\]in ammonia

D)

\[\text{B}{{\text{r}}_{\text{2}}}\]in \[\text{CC}{{\text{l}}_{\text{4}}}\]

View Answer
53) Oxidation number of Fe in\[\text{F}{{\text{e}}_{\text{2}}}{{\text{O}}_{\text{3}}}\] is

A)

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

B)

\[\frac{2}{6}\]

C)

\[\frac{8}{3}\]

D)

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

View Answer
54) Bauxite is an ore of

A)

Al

B)

Ca

C)

Cu

D)

Ni

View Answer
55) The best source of vitamin A is

A)

beans

B)

pulses

C)

orange

D)

carrot

View Answer
56) Plaster of Paris is

A)

\[CaS{{O}_{4}}.\frac{1}{2}{{H}_{2}}O\]

B)

\[CaS{{O}_{4}}.2{{H}_{2}}O\]

C)

\[CaS{{O}_{4}}.{{H}_{2}}O\]

D)

\[CaS{{O}_{4}}.4{{H}_{2}}O\]

View Answer
57) Penicillin is

A)

analgesic

B)

antipyretic

C)

antimalarials

D)

antibiotic

View Answer
58) The most stable compound is

A)

\[\text{LiF}\]

B)

\[\text{ }\!\!~\!\!\text{ LiCl}\]

C)

\[\text{ }\!\!~\!\!\text{ LiBr}\]

D)

\[\text{LiI}\]

View Answer
59) Heavy water is

A)

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

B)

water contain \[CaS{{O}_{4}},MgS{{O}_{4}}\]

C)

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

D)

water contain\[CaC{{O}_{3}}\]

View Answer
60) In the extraction of copper from its sulphide ore, the metal is formed by reduction of \[\text{C}{{\text{u}}_{\text{2}}}\text{O}\] with

A)

\[FeS\]

B)

\[CO\]

C)

\[C{{u}_{2}}S\]

D)

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

View Answer
61) \[\text{Ba}{{\text{O}}_{\text{2}}}\]and ozone reacts to produce

A)

\[\text{Ba}\]

B)

\[B{{a}_{2}}{{O}_{3}}\]

C)

\[BaO\]

D)

\[Ba{{(OH)}_{3}}\]

View Answer
62) Heisenberg uncertainty principle can be explained as

A)

\[\Delta x\ge \frac{\Delta p\times h}{4\pi }\]

B)

\[\Delta x\,\times \,\Delta p\ge \frac{h}{4\pi }\]

C)

\[\Delta x\,\times \,\Delta p\ge \frac{h}{\pi }\]

D)

\[\,\Delta p\ge \frac{\pi h}{\,\Delta x}\]

View Answer
63) For decolourisation of 1 mole of \[\text{KMn}{{\text{O}}_{\text{4}}}\text{,}\]the moles of \[{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}\]required is

A)

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

B)

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

C)

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

D)

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

View Answer
64) Bleaching powder is obtained by treating \[\text{C}{{\text{l}}_{\text{2}}}\] with

A)

\[Ca{{(OH)}_{2}}\]

B)

\[CaO\]

C)

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

D)

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

View Answer
65) Magnalium contains

A)

\[\text{Mg}\,\text{+}\,\text{Al}\]

B)

\[\text{ }\!\!~\!\!\text{ Mg}\,\text{+}\,\text{Cu}\]

C)

\[\text{Mg}\,\text{+}\,\text{Fe}\]

D)

\[\text{ }\!\!~\!\!\text{ Mg}\,\text{+ Mn}\]

View Answer
66) The de-Broglie wavelenght of a particle with mass 1 kg and velocity 100 m/s is

A)

\[6.6\,\,\times \,\,{{10}^{-33}}\,m\]

B)

\[6.6\,\,\times \,\,{{10}^{-36}}\,m\]

C)

\[6.6\,\,\times \,\,{{10}^{33}}\,m\]

D)

\[3.3\,\,\times \,\,{{10}^{-36}}\,m\]

View Answer
67) The volume of a gas measured at \[\text{27}{{\,}^{\text{o}}}\text{C}\]and 1 atm pressure is 10 L. To reduce the volume to 2L at 1 atm. pressure, the temperature required is

A)

60 K

B)

75 K

C)

150 K

D)

225 K

View Answer
68) Isotonic solutions have

A)

same vapour pressure

B)

same osmotic pressure

C)

same boiling point

D)

same temperature

View Answer
69) Epsom salt is

A)

\[BaS{{O}_{4}}.2{{H}_{2}}O\]

B)

\[CaS{{O}_{4}}.{{H}_{2}}O\]

C)

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

D)

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

View Answer
70) Paracetamol is an

A)

analgesic

B)

antipyretic

C)

both [a] and [b]

D)

none of the above

View Answer
71) The number of moles of oxygen obtained by the electrolytic decomposition of 108 g water is

A)

2.5

B)

3

C)

5

D)

7.5

View Answer
72) The change in entropy for the fusion of 1 mole of ice is [\[\text{mp}\,\text{of}\,\text{ice}\,\,\text{=}\,\,\text{273}\,\text{K,}\], molar enthalpy of fusion for ice\[=\,\,6.0\,\text{kJ}\,\text{mo}{{\text{l}}^{-1}}\]]

A)

\[11.73\,J{{K}^{-1}}\,mo{{l}^{-1}}\]

B)

\[18.84\,J{{K}^{-1}}\,mo{{l}^{-1}}\]

C)

\[21.97\,J{{K}^{-1}}\,mo{{l}^{-1}}\]

D)

\[24.47\,J{{K}^{-1}}\,mo{{l}^{-1}}\]

View Answer
73) Which does not give a precipitate with \[\text{AgN}{{\text{O}}_{\text{3}}}\]solution?

A)

\[[Co{{(N{{H}_{3}})}_{6}}]C{{l}_{3}}\]

B)

\[[Co{{(N{{H}_{3}})}_{5}}Cl]C{{l}_{2}}\]

C)

\[[Co{{(N{{H}_{3}})}_{4}}C{{l}_{2}}]Cl\]

D)

\[[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]\]

View Answer
74) Total volume of atoms present in a face centred cubic unit cell of a metal is (r is atomic radius)

A)

\[\frac{16}{3}\pi {{r}^{3}}\]

B)

\[\frac{20}{3}\pi {{r}^{3}}\]

C)

\[\frac{24}{3}\pi {{r}^{3}}\]

D)

\[\frac{12}{3}\pi {{r}^{3}}\]

View Answer
75) Pure silicon doped with phosphorus is a

A)

metallic conductor

B)

insulator

C)

n-type semiconductor

D)

p-type semiconductor

View Answer
76) Which of the following is a biodegradable polymer?

A)

Cellulose

B)

Polythene

C)

Polyvinyl chloride

D)

Nylon 6

View Answer
77) What is X in the following nuclear reaction? \[{{\,}_{7}}N{{\,}^{14}}+{{\,}_{1}}N{{\,}^{1}}\xrightarrow[{}]{{}}{{\,}_{8}}{{O}^{15}}+X\]

A)

\[{{\,}_{0}}{{n}^{1}}\]

B)

\[{{\,}_{-1}}{{e}^{0}}\]

C)

\[{{\,}_{+\,1}}{{e}^{0}}\]

D)

\[\gamma \]

View Answer
78) Solubility product of \[\text{PbC}{{\text{l}}_{\text{2}}}\]at \[298\,K\]is \[1\times {{10}^{-6}}.\] At this temperature solubility of \[\text{PbC}{{\text{l}}_{\text{2}}}\]in mol/L is

A)

\[{{(1\,\times \,{{10}^{-6}})}^{1/2}}\]

B)

\[{{(1\,\times \,{{10}^{-6}})}^{1/3}}\]

C)

\[{{(0.25\,\times \,{{10}^{-6}})}^{1/3}}\]

D)

\[{{(0.25\,\times \,{{10}^{-6}})}^{1/2}}\]

View Answer
79) The pH of a 0.001 M solution of \[\text{HCl}\]is

A)

0

B)

3

C)

5

D)

10

View Answer
80) Gold number is associated with

A)

amount of gold

B)

protective colloids

C)

purple of cassius

D)

electrophoresis

View Answer
81) Noble gases are used in discharge tubes to give different colours. Reddish-orange glow is due to

A)

Ar

B)

Ne

C)

Xe

D)

Kr

View Answer
82) The set representing the correct order for first ionisation potential is

A)

\[\text{ }\!\!~\!\!\text{ K}\,\text{}\,\text{Na}\,\text{}\,\text{Li}\]

B)

\[\text{ }\!\!~\!\!\text{ Be Mg Ca}\]

C)

\[\text{ }\!\!~\!\!\text{ B C N}\]

D)

\[Ge>Si>C\]

View Answer
83) Dry ice is

A)

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

B)

solid camphor

C)

solid\[\text{S}{{\text{O}}_{\text{2}}}\]

D)

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

View Answer
84) Methanol and ethanol are miscible in water due to

A)

covalent character

B)

hydrogen bonding character

C)

oxygen bonding character

D)

none of the above

View Answer
85) Which of the following does not have optical isomer?

A)

\[[Co{{(N{{H}_{3}})}_{3}}C{{l}_{3}}]\]

B)

\[[Co{{(e{{n}_{3}})}_{3}}]C{{l}_{2}}\]

C)

\[[Co(e{{n}_{2}})C{{l}_{2}}]Cl\]

D)

\[[Co(en){{(N{{H}_{3}})}_{2}}C{{l}_{2}}]Cl\]

View Answer
86) IUPAC name of the following compound

A)

\[\text{N,}\,\text{N}-\] dimethyl cyclopropaneear box amide

B)

N-methyl cyclopropan amide

C)

cyclopropion amide

D)

none of the above

View Answer
87) The product of following reaction is \[2C{{H}_{3}}MgBr+C{{H}_{2}}O\xrightarrow{{}}\]

A)

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

B)

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

C)

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

D)

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

View Answer
88) Freon used as refrigerant is

A)

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

B)

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

C)

\[CC{{l}_{2}}{{F}_{2}}\]

D)

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

View Answer
89) Lucas reagent is

A)

anhy. \[\text{ZnC}{{\text{l}}_{\text{2}}}\]and \[\text{N}{{\text{H}}_{\text{3}}}\]

B)

anhy. \[\text{ZnC}{{\text{l}}_{\text{2}}}\]and \[\text{CaC}{{\text{l}}_{\text{2}}}\]

C)

anhy. \[\text{ZnC}{{\text{l}}_{\text{2}}}\]and cone. \[\text{HCl}\]

D)

anhy. \[\text{ZnC}{{\text{l}}_{\text{2}}}\]and \[\text{HCl}\] gas

View Answer
90) The enzyme which can catalyse the conversion of glucose to ethanol is

A)

zymase

B)

invertase

C)

maltase

D)

diastase

View Answer
91) When dihydroxy acetone reacts with HI04, the product is/are

A)

HCHO

B)

HCOOH

C)

HCHO and HCOOH

D)

HCHO and \[\text{C}{{\text{O}}_{2}}\]

View Answer
92) Which of the following does not reduce Fehlings solution?

A)

Benzaldehyde

B)

Formic acid

C)

Glucose

D)

Fructose

View Answer
93) Sodium formate on heating gives

A)

oxalic acid and \[{{\text{H}}_{\text{2}}}\]

B)

sodium oxalate and \[{{\text{H}}_{\text{2}}}\]

C)

sodium oxalate

D)

\[\text{C}{{\text{O}}_{\text{2}}}\]and caustic soda

View Answer
94) Reaction of ethyl formate with excess of \[\text{C}{{\text{H}}_{\text{3}}}\text{Mgl}\] followed by hydrolysis gives

A)

\[n-\]propyl alcohol

B)

isopropyl alcohol

C)

acetaldehyde

D)

acetone

View Answer
95) Hydrolysis ofphenyl isocyanide forms

A)

benzoicacid

B)

formic acid

C)

acetic acid

D)

none of these

View Answer
96) Styrene can be purified by

A)

simple distillation

B)

fractional distillation

C)

steam distillation

D)

vacuum distillation

View Answer
97) Which of the following is not reducing sugar?

A)

Glucose

B)

Fructose

C)

Lactose

D)

Sucrose

View Answer
98) The monomer of teflon is:

A)

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

B)

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

C)

\[CHCl=CHCl\]

D)

\[CHF=CHCl\]

View Answer
99) The hybridisation state of carbon in fullerene is

A)

\[sp\]

B)

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

C)

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

D)

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

View Answer
100) A fruity smell is produced by the reaction of \[{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}\text{OH}\,\]with

A)

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

B)

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

C)

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

D)

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

View Answer
101) Five kingdom classification was proposed by

A)

Linnaeus

B)

Aristotle

C)

Whittaker

D)

Copeland

View Answer
102) According to the Neo-Darwinian theory which of the following is responsible for the origin of new species?

A)

Mutations

B)

Useful variations

C)

Mutations together with natural selection

D)

Hybridization

View Answer
103) Enzymes found attached to inner membrane of mitochondria instead of matrix is/are

A)

succinic dehydrogenase

B)

cytochrome oxidase

C)

both [a] and [b]

D)

malic dehydrogenase

View Answer
104) Chlorosis is caused due to deficiency of

A)

Mg

B)

Ca

C)

B

D)

Mn

View Answer
105) Part of the plant which is cultured to obtain virus free clones is

A)

Leaf

B)

root tip

C)

shoot tip

D)

embryo

View Answer
106) The first stable compound of \[{{\text{C}}_{\text{3}}}\] plants during photosynthesis is

A)

PGA

B)

RuBP

C)

Oxaloacetate

D)

Pyruvic acid

View Answer
107) Double fertilization is fusion of

A)

two eggs

B)

two eggs and polar nuclei

C)

one male gamete with egg and other with synergid

D)

one male gamete with egg and other with secondary nucleus

View Answer
108) Inheritence of ABO blood group shows

A)

polyploidy

B)

incomplete dominance

C)

multiple allelism

D)

polygeny

View Answer
109)  Photosynthetic enhancement with flashing light was first observed by

A)

Benson and Calvin

B)

Hill and Calvin

C)

Hatch and Slack

D)

Emerson and Arnold

View Answer
110) Gibberellin was first extracted from

A)

Gibberella fujikuroi

B)

Gelidium

C)

Gracelaria

D)

Aspergillus

View Answer
111) In E. coli. an operator gene combine with

A)

inducer gene to switch on structural gene action

B)

inducer gene to switch off structural gene action

C)

regulator protein (represser) to switch off structural gene action

D)

regulator protein to switch on gene action

View Answer
112) Exarch and polyarch xylem strands are found in

A)

monocot stem

B)

dicotstem

C)

monocot root

D)

dicot root

View Answer
113) The stage of Omithine cycle at which arginase enzyme is used

A)

Omithine\[\to \] citruUine

B)

arginine \[\to \]Omithine

C)

citrulline \[\to \] arginosuccinic acid

D)

Omithine \[\to \] urea

View Answer
114) Photosynthetic food material is transported in the form of

A)

glucose

B)

sucrose

C)

starch

D)

glycogen

View Answer
115) At retrogressive metamorphosis the uro chordate larva

A)

loss notochord

B)

loss tail

C)

experience reduction of nervous system to a visceral ganglion

D)

all of the above

View Answer
116) A species inhabiting different geographical area is known as

A)

Allopatric

B)

Sympatric

C)

Biospecies

D)

Sibling species

View Answer
117) Castor oil is yielded from which of the following?

A)

Brassica compestris

B)

Sesamum indicum

C)

Ricinus communis

D)

Cocos nucifera

View Answer
118) Which type of respiratory organs are present in spiders and scropions?

A)

Book lungs

B)

Gills

C)

Gill books

D)

Lungs

View Answer
119) Energy storage at consumer level is called

A)

gross primary productivity

B)

secondry productivity .

C)

net primary productivity

D)

net productivity

View Answer
120) After examining the blood groups of husband and wife, the doctor advised them not to have more than one child, the blood group of the couple are likely to be

A)

male \[R{{h}^{-}}\]and female \[R{{h}^{+}}\]

B)

female \[R{{h}^{-}}\]and male \[R{{h}^{+}}\]

C)

male \[R{{h}^{+}}\]and female\[R{{h}^{+}}\]

D)

male \[R{{h}^{-}}\]and female\[R{{h}^{-}}\]

View Answer
121) Main component of ribosome are

A)

DNA and RNA

B)

RNA and protein

C)

DNA and protein

D)

protein and lipids

View Answer
122) How many hearts are found in earthworm?

A)

8 (four pairs)

B)

2 (one pair)

C)

6 (three pairs)

D)

12 (six pairs)

View Answer
123) Schizocoelomates and entero coelomates are

A)

acoelomates

B)

true coelomates

C)

invertebrates

D)

echinoderms only

View Answer
124) \[\text{C}{{\text{O}}_{\text{2}}}\]is transported as

A)

dissolved in blood plasma

B)

as carbonic acid

C)

in carbammo haemoglobin

D)

as carbamino haemoglobin and carbonic acid

View Answer
125) Which of the damaged cells can not be repaired?

A)

Liver cells

B)

Brain cells

C)

Bone cells

D)

Epidermal cells

View Answer
126) Superficial meroblastic cleavage occurs in

A)

reptiles

B)

birds

C)

mammals

D)

insects

View Answer
127) One strand of DNA (non-template) has base sequence CAG, TCG GAT. What will be the sequence of bases in mRNA?

A)

AGC CTA CTA

B)

GTC AGC CTC

C)

CAG UCG GAU

D)

GAC TAG CTA

View Answer
128) Krebs cycle was discovered by Krebs in pigeon muscles in 1940. Which step is called gateway step/link reaction/transition reaction in respiration?

A)

Glycoiysis

B)

Formation of acetyl-coA

C)

citric acid formation

D)

ETS terminal oxidation

View Answer
129) When released from ovary, human egg contain

A)

one Y chromosome

B)

two X chromosome

C)

one X chromosome

D)

XY chromosome

View Answer
130) In the body, the membrane surrounding the bone is known as

A)

periosteum

B)

endosteum

C)

perichondrium

D)

chondrocytes

View Answer
131) Polygonum type of embryosac is

A)

7-celled, 8-nucleate

B)

8-celled, 7-nucleate

C)

9-nucleate

D)

16-nucleate

View Answer
132) Some organisms resemble other organisms and thus escape from enemies. This phenomenon is known as

A)

homology

B)

variation

C)

analogy

D)

mimicry

View Answer
133) Recent reports of acid rains in big industrial cities are due to the effect of atmospheric pollution by

A)

more relase of \[\text{N}{{\text{O}}_{\text{2}}}\] and \[\text{S}{{\text{O}}_{\text{2}}}\]by burning of fossil fuels

B)

more relase of \[\text{C}{{\text{O}}_{2}}\]by burning of coal/wood cutting of forests and increasing popultions

C)

excessive release of \[\text{N}{{\text{H}}_{\text{3}}}\]by coal gas/industries

D)

excessive release of CO by incomplete combustion of carbonaceous fuels

View Answer
134) There is more competition for survival between

A)

different animals of same niche

B)

same animals of same niche

C)

different animals of different niche

D)

same animals of different niche

View Answer
135) Which set includes pathogenic Arthropods?

A)

Tse-tse fly, mosquito, flea-plague

B)

Crab, \[Culex,\]spider

C)

Anopheles, \[Culex,\]cray fish

D)

Silver fish, house fly, sandfly

View Answer
136) Ozone layer is being destroyed by

A)

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

B)

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

C)

\[CFCs\]

D)

Photochemical smog

View Answer
137) In the blind spot where the optic nerves leaves the eyes

A)

rods and cones are absent

B)

only cones are present

C)

only rods are present

D)

special neurons are present

View Answer
138) Which of the following blood vessels in the circulatory system of frog has more oxygenated blood?

A)

Pulmocutaneous artery

B)

Pulmocutaneous vein

C)

Pulmonary artery

D)

Precaval veins

View Answer
139) The enzyme, which helps to cut one strand of DNA duplex to release tension of coiling of two strands is

A)

DNA ligase

B)

DNA pblymerase

C)

topo-isomerase

D)

swielases (helicase or unwindases)

View Answer
140) Blood vascular system in hemichordata is

A)

open

B)

reduced

C)

closed

D)

absent

View Answer
141) In eukaryotes basic structural unit made of histone and DNA is

A)

nucleosome

B)

nucleolus

C)

chromosome

D)

lysosome

View Answer
142) Anaemia is due to deficiency of

A)

Ca

B)

Fe

C)

Mg

D)

P

View Answer
143) Mechanical support, enzyme circulation, protein synthesis and detoxification of drugs are function of

A)

ER

B)

ribosomes

C)

dictyosomes

D)

chloroplast

View Answer
144) Characteristic of mammalian liver is

A)

Kupffers cells and leucocytes

B)

Leucocytes and canaliculae

C)

Glissons capsules and Kupffer cells

D)

Glissons capsules and leucocytes

View Answer
145) Which of the following required both during photosynthesis and respiration?

A)

Phytochrome

B)

Cytochrome

C)

Chlorophyll

D)

Glucose

View Answer
146) One-gene one enzyme hypothesis was proposed by

A)

Beadle and Tatum

B)

Jacob and Monod

C)

Lederberg

D)

Watson and Crick

View Answer
147) Phytohormone commonly called stress hormone is

A)

auxin

B)

abscisic acid

C)

gibberellin

D)

cytokinins

View Answer
148) Saccharomyces is commonly used in the production of

A)

ethyl alcohol

B)

curd

C)

citric acid

D)

acetic acid

View Answer
149) Food chain is a series of population which starts with producers. It is concerning with

A)

biotic components only

B)

energy flow and transfer of nutrients

C)

both [a] and [b]

D)

biotic and decomposers

View Answer
150) Myxoedema is a disorder of

A)

parathyroid gland

B)

adrenal gland

C)

pituitary gland

D)

thyroid gland

View Answer

Study Package

Buy Now

Solved papers for JCECE Medical JCECE Medical Solved Paper-2007

done JCECE Medical Solved Paper-2007 Total Questions - 150

Study Package

JCECE Medical Solved Paper-2007 Total Questions - 150