Solved papers for JCECE Medical JCECE Medical Solved Paper-2004

JCECE Medical Solved Paper-2004 Total Questions - 150

1) The direction of vector \[\overset{\to }{\mathop{\text{A}}}\,\] is reversed. What are the values \[\Delta \overset{\to }{\mathop{\text{A}}}\,\] and \[\Delta |\overset{\to }{\mathop{\text{A}}}\,|\] ?

A)

\[+\,2\vec{A},0\]

B)

\[+\,\vec{A},0\]

C)

\[-\,\vec{A},0\]

D)

\[-2\,\vec{A},0\]

View Answer
2) The velocity of a body moving with uniform acceleration at a given instant of time t is 10 m/s. After 5 s its velocity is 20 m/s. Distance travelled in that time is:

A)

300m

B)

400m

C)

150m

D)

75m

View Answer
3) A stone falls freely such that the distance covered by It in the last second of its motion is equal to the distance covered by it in the first 5 s. It is in air for:

A)

26s

B)

25s

C)

13s

D)

12s

View Answer
4) A child is swinging a swing. Minimum and maximum heights of swing from earths surface are 0.75 m and 2m respectively. The maximum velocity of this swing is:

A)

5 m/s

B)

10 m/s

C)

15 m/s

D)

20 m/s

View Answer
5) An object is thrown along a direction making an angle \[{{45}^{o}}\] with the horizontal direction. The horizontal range of the object is equal to:

A)

twice the vertical height

B)

vertical height

C)

four times the vertical height

D)

three times the vertical height

View Answer
6) A fireman wants to slide down a rope. The breaking load for the rope is\[\frac{\text{3}}{\text{4}}\text{th}\] of the weight of the man. With what acceleration should the fireman slide down? (Acceleration due to gravity is g)

A)

\[\frac{g}{2}\]

B)

\[\frac{g}{4}\]

C)

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

D)

zero

View Answer
7) A body of mass 1 kg is rotating in a vertical circle of radius 1m. What will be (he difference in kinetic energy at the top and at the bottom of the circle? (Take\[g=10\,m/{{s}^{2}}\])

A)

50 J

B)

30 J

C)

20 J

D)

10 J

View Answer
8) A circular ring of mass m and radius r is rolling on a smooth horizontal surface with speed v. Its kinetic energy is:

A)

\[\frac{1}{8}m{{v}^{2}}\]

B)

\[\frac{1}{4}m{{v}^{2}}\]

C)

\[\frac{1}{3}m{{v}^{2}}\]

D)

\[m{{v}^{2}}\]

View Answer
9) A satellite is revolving around the earth in a circular orbit of radius 4 times that of the parking orbit. The time period of the .satellite

A)

16 days

B)

2 days

C)

4 days

D)

8 days

View Answer
10) As shown in figure, a planet revolves in elliptical orbit around the sun. Where is KE of the planet maximum?

A)

\[At\,{{P}_{4}}\]

B)

\[At\,{{P}_{1}}\]

C)

\[At\,{{P}_{2}}\]

D)

\[At\,{{P}_{3}}\]

View Answer
11) If the condenser shown in the circuit is charged to 5 V and left in the circuit, in 12 s the charge on the condenser will become:

A)

\[\frac{10}{e}\text{coulomb}\]

B)

\[\frac{{{e}^{2}}}{10}\text{coulomb}\]

C)

\[\frac{10}{{{e}^{2}}}\text{coulomb}\]

D)

\[\frac{e}{10}\text{coulomb}\]

View Answer
12) A sings with a frequency \[(n)\]and B sings with a frequency 1/8 that of A. If the energy remains the same and the amplitude of A is a, the amplitude of B will be:

A)

2a

B)

8 a

C)

4a

D)

a

View Answer
13) Reactance of a capacitor of capacitance \[C\,\mu F\]for AC frequency \[\frac{\text{400}}{\text{ }\!\!\pi\!\!\text{ }}\text{Hz}\]is \[25\,\Omega ,\] the value of C is:

A)

\[75\,\mu F\]

B)

\[100\,\mu F\]

C)

\[25\,\mu F\]

D)

\[50\,\mu F\]

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

A)

greater than KE of proton

B)

zero

C)

equal to KE of proton

D)

infinite

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

A)

5499

B)

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

C)

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

D)

5501

View Answer
16) A force of \[7\hat{i}+6\hat{k}\]makes a body to move on a plane with the velocity \[3\hat{i}+4\hat{k}.\] The power developed is:

A)

\[\sqrt{45}\]

B)

45

C)

24

D)

\[\sqrt{24}\]

View Answer
17) The variation of PV with V of a fixed mass of an ideal gas at constant temperature is graphically represented by as shown in figure:

A)

B)

C)

D)

View Answer
18) The number of oxygen molecules in a cylinder of volume \[\text{1}{{\text{m}}^{\text{3}}}\]at a temperature of \[\text{27}{{\,}^{\text{o}}}\text{C}\]and pressure of 13.8 Pa is: (Boltzmanns constant\[k=1.38\times {{10}^{-23}}\,J{{K}^{-1}}\])

A)

\[6.23\times {{10}^{26}}\]

B)

\[0.33\times {{10}^{28}}\]

C)

\[3.3\times {{10}^{21}}\]

D)

none of these

View Answer
19) The minimum magnifying power of a telescope is M. If the focal length of the eye lens is halved, the magnifying power will become:

A)

\[\frac{M}{4}\]

B)

\[3M\]

C)

\[2M\]

D)

\[4M\]

View Answer
20) The surface temperature is maximum for:

A)

blue star

B)

yellow star

C)

green star

D)

red star

View Answer
21) A convergent doublet of separated lens, corrected for spherical aberration, are separated by 2 cm and has an equivalent focal length of 10 cm. The focal length of its component lenses are:

A)

\[{{f}_{1}}=18\,cm,\,{{f}_{2}}=10\,cm\]

B)

\[{{f}_{1}}=20\,cm,\,{{f}_{2}}=28\,cm\]

C)

\[{{f}_{1}}=20\,cm,\,{{f}_{2}}=18\,cm\]

D)

\[{{f}_{1}}=24\,cm,\,{{f}_{2}}=18\,cm\]

View Answer
22) In Youngs experiment using light of wavelength \[6000\overset{\text{o}}{\mathop{\text{A}}}\,,\] fringe width obtained at distance 2.5 m is 0.8 mm. If the entire apparatus is immersed in a liquid of refractive. index 1.6, the fringe width Will be:

A)

0.2 mm

B)

0.4 mm

C)

0.5mm

D)

0.6 mm

View Answer
23) In double slit experiment, the angular width of interference fringes with sodium light \[(\lambda =5890\,\overset{\text{o}}{\mathop{\text{A}}}\,)\]is \[\text{0}\text{.2}{{\text{0}}^{\text{o}}}\text{.}\] The change in wavelength required to increase the angular width by 10% will be:

A)

zero

B)

increased by \[6479\text{ }\overset{\text{o}}{\mathop{\text{A}}}\,\]

C)

increased by \[589\text{ }\overset{\text{o}}{\mathop{\text{A}}}\,\]

D)

decreased by \[589\text{ }\overset{\text{o}}{\mathop{\text{A}}}\,\]

View Answer
24) SHM is executed by a particle of mass \[m.\]The displacement of the particle is \[\left( \frac{1}{\sqrt{2}} \right)\]times the amplitude. What fraction of the total energy is kinetic at this displacement?

A)

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

B)

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

C)

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

D)

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

View Answer
25) The period of SHM of a particle is 12 s. The phase difference between the positions at \[t=3\,s\]and \[t=4s\]will be:

A)

\[\pi /4\]

B)

\[3\pi /5\]

C)

\[\pi /6\]

D)

\[\pi /=2\]

View Answer
26) The volume of a metal sphere increases by \[\text{0}\text{.15 }\!\!%\!\!\text{ }\]when its temperature is raised by\[\text{24}{{\,}^{\text{o}}}\text{C}\text{.}\]The coefficient of linear expansion of metal is:

A)

\[2.5\times {{10}^{-5}}/{{\,}^{o}}C\]

B)

\[2.0\times {{10}^{-5}}/{{\,}^{o}}C\]

C)

\[1.5\times {{10}^{-5}}/{{\,}^{o}}C\,\]

D)

\[1.2\times {{10}^{-5}}/{{\,}^{o}}C\,\]

View Answer
27) The radii of two soap bubbles are \[{{r}_{1}}\]and\[{{r}_{2}}\]\[({{r}_{2}}>{{r}_{1}}).\]When they come into contact, the radius of their common interface is:

A)

\[{{r}_{2}}-{{r}_{1}}\]

B)

\[\sqrt{r_{1}^{2}-r_{2}^{2}}\]

C)

\[\frac{{{r}_{1}}+{{r}_{2}}}{2}\]

D)

\[\frac{{{r}_{1}}{{r}_{2}}}{{{r}_{1}}-{{r}_{2}}}\]

View Answer
28) A ray of light is incident on the surface of a glass slab at \[\text{6}{{\text{0}}^{\text{o}}}\text{.}\] The refractive index of glass, if the reflected and refracted rays are mutually perpendicular to each other, will be:

A)

1.5

B)

4.16

C)

2.25

D)

1.73

View Answer
29) A stretched string is 1 m long. Its mass per unit length is 0.5 g/m. It is stretched with a force of 20 N. It is plucked at a distance of 25 cm from one end. The frequency of note emitted by it will be:

A)

400 m

B)

300 Hz

C)

200 Hz

D)

100 Hz

View Answer
30) A transverse wave is given by \[y=A\,\sin 2\pi (ft-x/\lambda ).\]The maximum particle velocity is 4 times the wave velocity when:

A)

\[\lambda =2\,\pi A\]

B)

\[\lambda =\pi A\]

C)

\[\lambda =\pi A/2\]

D)

\[\lambda =\pi A/4\]

View Answer
31) The energy in eV of red light of wavelength \[\lambda =6560\overset{\text{o}}{\mathop{\text{A}}}\,\] is:

A)

1.89 eV

B)

2.89 eV

C)

3.89 eV

D)

4.89 Ev

View Answer
32) The wavelength of first member of Lyman series is \[1215\overset{\text{o}}{\mathop{\text{A}}}\,.\] The wavelength of \[{{\text{H}}_{\text{ }\!\!\alpha\!\!\text{ }}}\]line is:

A)

\[6561\overset{\text{o}}{\mathop{\text{A}}}\,\]

B)

\[5464\overset{\text{o}}{\mathop{\text{A}}}\,\]

C)

\[800\overset{\text{o}}{\mathop{\text{A}}}\,\]

D)

\[4840\overset{\text{o}}{\mathop{\text{A}}}\,\]

View Answer
33) When silver is irradiated by ultraviolet light of \[1000\overset{\text{o}}{\mathop{\text{A}}}\,,\]potential of 7.7 V is required to stop the photo electrons. The work function of silver will be:

A)

3.72 eV

B)

6.72 eV

C)

5.72 eV

D)

4.67eV

View Answer
34) Maximum kinetic energy\[{{E}_{k}}\]of a photoelectron varies with the frequency\[v\]of the incident radiation as:

A)

B)

C)

D)

View Answer
35) A radioactive element has half-life period 1600 yr. After 6400 yr, what part of element will remain?

A)

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

B)

\[\frac{1}{8}\]

C)

\[\frac{1}{16}\]

D)

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

View Answer
36) For a transistor\[{{I}_{E}}=25\,mA\] and \[{{I}_{B}}=1\,mA,\]the value of current gain \[\alpha \] will be:

A)

\[\frac{25}{24}\]

B)

\[\frac{24}{25}\]

C)

\[\frac{25}{26}\]

D)

\[\frac{26}{25}\]

View Answer
37) When two semiconductors of p and n type are brought into contact, they form a \[p-n\]junction which acts like a:

A)

rectifier

B)

amplifier

C)

oscillator

D)

conductor

View Answer
38) The de-Broglie wavelength of 1 kg mass moving with a velocity of 10 m/s, will be]:

A)

\[6.626\times {{10}^{-35}}m\]

B)

\[6.626\times {{10}^{-34}}m\]

C)

\[6.626\times {{10}^{-33}}m\]

D)

none of these

View Answer
39) Radioactive nuclei that are injected into a patient collected at certain sites within its body, undergoing radioactive decay and emitting electromagnetic radiation. These radiations can then be recorded by a detector. This procedure provides an important diagnostic tools called:

A)

gamma camera

B)

CAT scan

C)

radiotracer technique

D)

gamma ray spectroscopy

View Answer
40) If R, C and L denote resistance, capacitance and inductance. Which of the following will not have the dimensions of frequency?

A)

\[R{{L}^{-1}}\]

B)

\[{{R}^{-1}}{{C}^{-1}}\]

C)

\[{{L}^{-1/2}}{{C}^{-1/2}}\]

D)

\[RCL\]

View Answer
41) A \[10\,\mu F\]capacitor is connected across a 200 V, 50 Hz AC supply. The peak current through the circuit is:

A)

\[0.6\sqrt{2}A\]

B)

\[0.6\,A\]

C)

\[\frac{0.6\pi }{2}A\]

D)

\[\frac{0.6}{\sqrt{2}}A\]

View Answer
42) What is the energy stored in a 50 mH inductor carrying a current of 4A?

A)

0.2 J

B)

0.4 J

C)

0.05 J

D)

0.1 J

View Answer
43) In an ammeter, 4% of the main current is passing through galvanometer. If the galvanometer is shunted with a \[5\Omega \]resistance, the resistance of the galvanometer is:

A)

\[120\,\Omega \]

B)

\[20\,\Omega \]

C)

\[5\,\Omega \]

D)

\[4\,\Omega \]

View Answer
44) If 100 kWh of energy is consumed at 33 V in a copper voltameter, what is the mass of copper liberated? (Electrochemical equivalent of copper is\[0.33\times {{10}^{-6}}kg/C\])

A)

\[1\,mg\]

B)

\[3.6\,kg\]

C)

\[3.3\,kg\]

D)

\[1\,kg\]

View Answer
45) Four identical resistors when connected in series dissipate 5 W power. If they are connected in parallel, the power dissipated will be:

A)

80 W

B)

60 W

C)

40 W

D)

20 W

View Answer
46) What is the magnitude of the point charge due to which the electric field 30 cm away has the magnitude of 2N/C? \[\left( \frac{1}{4\pi {{\varepsilon }_{0}}}=9\times {{10}^{9}}N{{M}^{2}}/{{C}^{2}} \right)\]

A)

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

B)

\[2\times {{10}^{-11}}C\]

C)

\[5.4\times {{10}^{-11}}C\]

D)

\[7.5\times {{10}^{-11}}C\]

View Answer
47) A parallel plate capacitor is immersed in an oil of dielectric constant 2. The field between the plates is:

A)

decreased, by a factor of\[\frac{1}{\sqrt{2}}\]

B)

increased, by a factor of \[\sqrt{2}\]

C)

increased, by a factor of\[\frac{1}{2}\]

D)

decreased, by a factor of 2

View Answer
48) A triode valve has an amplification factor of 20 and its plate is given a potential of 300 V. The grid-voltage to reduce the plate current to   zero, is :

A)

25V

B)

15V

C)

12V

D)

10 V

View Answer
49) In an ideal parallel LC circuit, the capacitor is charged by connecting it to a DC source which is then disconnected. -The current in the circuit:

A)

becomes zero instantaneously

B)

grows monotonically,

C)

decays monotonically

D)

oscillates instantaneously

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

A)

1 : 2

B)

2 : 1

C)

1:1

D)

4:1

View Answer
51) Which of the following Statements, about zero order reaction is not true?

A)

Its rate constant unit is \[{{s}^{-1}}\]

B)

The graph between time and rate of reaction is a straight line

C)

Rate of reaction is independent of concentration of reactants

D)

None of the above

View Answer
52) The amount of\[{{\text{H}}_{\text{2}}}\text{S}\text{.}\]required to precipitate \[\text{1}\text{.69 g BaS}\]from\[\text{BaC}{{\text{l}}_{\text{2}}}\]solution is:

A)

3.4 g

B)

0.034 g

C)

0.34 g

D)

0.17g

View Answer
53) Which of the following is not a protein?

A)

Testosterone

B)

Lipase

C)

Keratin

D)

Haemoglobin

View Answer
54) The reaction, \[C{{H}_{3}}COC{{H}_{3}}\xrightarrow[(ii)\,\text{KOH},\text{glcol}]{(i)\,N{{H}_{2}}N{{H}_{2}}}C{{H}_{3}}C{{H}_{2}}C{{H}_{3}}\] is known as:

A)

Clemmensens reduction

B)

Blancs reduction

C)

Birch reduction

D)

Wolff-Kishner reduction

View Answer
55) pH-scale was proposed by:

A)

Arrhenius

B)

Sorenson

C)

Pierre de Coubertin

D)

none of the above

View Answer
56) Thomas slag is:

A)

\[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.2{{H}_{2}}O\]

B)

\[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}.CaSi{{O}_{3}}\]

C)

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

D)

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

View Answer
57) Mohrs salt is

A)

\[N{{a}_{2}}S{{O}_{4}}.A{{l}_{2}}(S{{O}_{4}}).24{{H}_{2}}O\]

B)

\[CuS{{O}_{4}}.A{{l}_{2}}{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O\]

C)

\[FeS{{O}_{4}}.{{(N{{H}_{4}})}_{2}}S{{O}_{4}}.6{{H}_{2}}O\]

D)

\[{{K}_{2}}S{{O}_{4}}.F{{e}_{2}}{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O\]

View Answer
58) Which of the following has maximum ionisation energy?

A)

Caesium

B)

Fluorine

C)

Xenon

D)

Nitrogen

View Answer
59) Which of the following give ammonia, on heating with NaOH?

A)

Ethyl amine

B)

Ethane nitrile

C)

Nitroethane

D)

Ethanamide

View Answer
60) Which of the following is poisonous?

A)

Methanol

B)

Ethanol

C)

Glycerol

D)

Castor oil

View Answer
61) Which of the following fraction of coal tar distillation is obtained at \[{{270}^{o}}-{{360}^{o}}C\]?

A)

Light oil

B)

Middle oil

C)

Green oil

D)

Heavy oil

View Answer
62) The amount of oxalic acid, required to prepare 300 mL 2.5 M solution, is:

A)

67.5 g

B)

9.45 g

C)

6.75 g

D)

94.5 g

View Answer
63) The carbon di-oxide gas does not follow gaseous laws at all ranges of pressure and temperature because:

A)

it is triatpmic gas

B)

its internal energy is quite high

C)

there is attraction between its, molecules

D)

it solidify at low temperature

View Answer
64) The bond-angle in \[\text{As}{{\text{H}}_{\text{3}}}\]is greater than that in:

A)

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

B)

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

C)

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

D)

none of these

View Answer
65) Which of the following gas, diffuse most slowly?

A)

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

B)

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

C)

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

D)

All of these diffuse at equal rate

View Answer
66) Oxidation number of fluorine is+1 in:

A)

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

B)

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

C)

both [a] and [b]

D)

none of these

View Answer
67) Which radioisotope is used in the treatment of Leukeamia?

A)

\[P-32\]

B)

\[Na-24\]

C)

\[1-128\]

D)

\[Co-59\]

View Answer
68) A metal having higher value of \[{{\text{E}}^{\text{o}}}\text{,}\]can:

A)

replace hydrogen from dilute \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]

B)

replace hydrogen from concentrate \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\]

C)

act as oxidising agent

D)

all of the above

View Answer
69) The method, which is used to purify colloidal solution is:

A)

electrophoresis

B)

dialysis

C)

chromatography

D)

peptisation

View Answer
70) Four gases ethane, ethene, ethyne and propene are passed into a wolf bottle containing ammoniacal \[\text{AgN}{{\text{O}}_{3}}\]solution. Which gas will come out of wolf bottle?

A)

Only ethyne

B)

Ethane and ethyne

C)

Ethane and ethene

D)

Ethane, ethene and propene

View Answer
71) How many conformers are known of ethane?

A)

Two

B)

Three

C)

\[>3\]

D)

Ethane cannot show conformation

View Answer
72) Interfering radicals interfere in the usual test of:

A)

acid radicals

B)

basic radicals

C)

both [a] and [b]

D)

none of these

View Answer
73) Flux in the smelting process is added to:

A)

decrease the solubility of impurities

B)

increase the fusion temperature of roasted ore

C)

convert impurities into slag

D)

all of the above

View Answer
74) The heat of formation of \[\text{MgO,A}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{3}}}\]and \[\text{Si}{{\text{O}}_{2}}\]are \[-692,\,-1676,-911,\,\text{kJ}\text{mo}{{\text{l}}^{-1}}.\] Most stable oxide is:

A)

\[MgO\]

B)

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

C)

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

D)

cannot be predicted

View Answer
75) Which of the following reaction, will be favoured by low pressure?

A)

\[PC{{l}_{5}}PC{{l}_{3}}+C{{l}_{2}}\]

B)

\[{{N}_{2}}+3{{H}_{2}}2N{{H}_{3}}\]

C)

\[{{H}_{2}}+\frac{1}{2}{{O}_{2}}{{H}_{2}}O\]

D)

\[2NO+{{O}_{2}}2N{{O}_{2}}\]

View Answer
76) In III group of basic radical analysis, \[N{{H}_{4}}Cl\]is added before group reagent \[N{{H}_{4}}OH.\]This is done to:

A)

increase the solubility product of III group salts

B)

decrease the solubility product of III group salts

C)

increase the ionic product of \[\text{O}{{\text{H}}^{-}}\]and III group radicals

D)

decrease the degree of ionisation of group reagent

View Answer
77) Representative elements are:

A)

\[s-\]block elements

B)

p-block elements

C)

both [a] and [b]

D)

none of these

View Answer
78) Which of the following equation is used in Paulings scale of electronegativity?

A)

\[{{x}_{A}}=0.187(IE+EA)+0.17\]

B)

\[{{x}_{A}}-{{x}_{B}}=0.182\]

C)

\[{{[{{E}_{A-B}}-\sqrt{({{E}_{A-A}}\times {{E}_{B-B}})}]}^{1/2}}\]

D)

None of the above

View Answer
79) Which hybridisation has sulphur in \[S{{O}_{2}}\]?

A)

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

B)

\[s{{p}^{3}}{{d}^{2}}\]

C)

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

D)

\[sp\]

View Answer
80) The energy of last electron of Li will be:

A)

\[-30.6\text{ }eV\]

B)

\[~-13.6\text{ }eV\]

C)

\[-24.6\text{ }eV\]

D)

\[~-28.6\text{ }eV\]

View Answer
81) Benzaldehyde, in presence of dil. NaOH, changes into benzyl alcohol and sodium benzoate. This reaction is an example of:

A)

rearrangement

B)

oxidation

C)

disproportionation

D)

none of the above

View Answer
82) Which of the following is the strongest acid?

A)

o-nitro benzoic acid

B)

\[m-\]nitro benzoic acid

C)

\[m-\] chloro benzoic acid

D)

\[m-\] cyano benzoic acid

View Answer
83) What is the product X in the reaction, \[C{{H}_{3}}COCl\xrightarrow{C{{H}_{3}}COONa}X?\]

A)

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

B)

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

C)

\[C{{H}_{3}}COC{{H}_{2}}COO{{C}_{2}}{{H}_{5}}\]

D)

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

View Answer
84) A 0.5 g/L solution of glucose is found to be isotonic with a 2.5 g/L solution of an organic compound. What will be the molecular weight of that organic compound?

A)

300

B)

600

C)

925

D)

1200

View Answer
85) Which of the following ion does not follow EAN rule?

A)

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

B)

\[{{[Ag{{(CN)}_{2}}]}^{-}}\]

C)

\[{{[PtC{{l}_{6}}]}^{2-}}\]

D)

None of these

View Answer
86) Potassium, on burning in oxygen atmosphere, gives:

A)

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

B)

\[{{K}_{2}}{{O}_{3}}\]

C)

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

D)

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

View Answer
87) Which method is employed to prepare copper sol?

A)

Peptisation

B)

Bredigs arc method

C)

Double decomposition

D)

Reduction of \[\text{CuC}{{\text{l}}_{\text{2}}}\]

View Answer
88) How much copper will be deposited at cathode, on passing 4 coulomb charge in 15 min?

A)

0.0195 g

B)

0.0013 g

C)

0.020 g

D)

0.0020 g

View Answer
89) If 50 % of a radioactive substance dissociates in 15 min, then the time taken by substance to   dissociate 99% will be:

A)

50 min

B)

100 min

C)

99 min

D)

150 min

View Answer
90) Which of the following alcohol give positive iodoform test?

A)

Methanol

B)

Ethyl carbinol

C)

Pentanol-3

D)

Methyl carbinol

View Answer
91) Human body is an example of:

A)

open system

B)

closed system

C)

isolated system

D)

none of these

View Answer
92) The atomic size of cerium and promethium is quite close, due to:

A)

they are in same period in periodic table

B)

their electronic configuration is same

C)

\[f-\] electrons have poor shielding effect

D)

nuclear charge is higher oil cerium than promethium

View Answer
93) Brown glass and cement have/ which element common in them?

A)

\[Fe\]

B)

\[Al\]

C)

\[Na\]

D)

All of these

View Answer
94) The most common isomerism found in ethers, is:

A)

chain isomerism

B)

tautomerism

C)

metamerism

D)

optical isomerism

View Answer
95) \[t-\]butyl chloride preferrably undergo hydrolysis by:

A)

\[{{S}_{N}}1\] mechanism

B)

\[{{S}_{N}}2\] mechanism

C)

any of [a] and [b]

D)

none of the above

View Answer
96) Which of the following has lowest boiling point?

A)

\[NaCl\]

B)

\[CuCl\]

C)

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

D)

\[CsCl\]

View Answer
97) Which of the following is true for the reaction \[CO(g)+\frac{1}{2}{{O}_{2}}(g)C{{O}_{2}}(g)\]

A)

\[{{K}_{p}}>{{k}_{c}}\]

B)

\[{{K}_{p}}<{{k}_{c}}\]

C)

\[{{K}_{p}}={{k}_{c}}\]

D)

\[{{K}_{p}}\ge {{k}_{c}}\]

View Answer
98) Which of the following is not a buffer solution?

A)

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

B)

\[{{H}_{3}}B{{O}_{3}}+N{{a}_{3}}B{{O}_{3}}\]

C)

\[HCl{{O}_{4}}+NaCl{{O}_{4}}\]

D)

\[N{{H}_{4}}OH+{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\]

View Answer
99) Which of the following ore is concentrated by both, magnetic and gravimetric separation?

A)

Dolomite

B)

Tinstone

C)

Galena

D)

Bauxite

View Answer
100) Which of the following is not a polymer?

A)

RNA

B)

Oxytocin

C)

Cholesterol

D)

Amylose

View Answer
101) The first codon discovered by Nirenberg and Mathaei was:

A)

CCC

B)

GGG

C)

UUU

D)

AAA

View Answer
102) Maximum amount of energy/ATP is liberated on oxidation of:

A)

fats

B)

proteins

C)

starch

D)

vitamins

View Answer
103) The thermoregulatory centre in the body is:

A)

spinal cord

B)

hypothalamus

C)

cerebellum

D)

pituitary

View Answer
104) Which is not cancer?

A)

Leukemia

B)

Trachoma

C)

Carcinoma

D)

Sarcoma

View Answer
105) Bio gas production from waste bio mass with the help of methanogenic bacteria is:

A)

multi step process

B)

one step process

C)

two step process

D)

three step process

View Answer
106) Pace-maker in heart is situated:

A)

in the wall of left atrium

B)

in the wall of right atrium

C)

on inter-auricular septum

D)

on inter-ventricular septum

View Answer
107) In the animal body blood bank is:

A)

heart

B)

spleen

C)

lungs

D)

liver

View Answer
108) Addisons disease results from:

A)

hypertrophy of gonads

B)

hypo-secretion of adrenal cortex

C)

hyperactivity of cells of Leydig

D)

none of the above

View Answer
109) LSD is obtained from:

A)

Claviceps purpurea

B)

Rauwolffia serpentina

C)

Pdpayer somniferum

D)

Cannabis sativa

View Answer
110) Australopithecus existed in:

A)

Pliocene

B)

Miocene

C)

Pleistocene

D)

Both [a] and [b]

View Answer
111) who proved that oxygen evolved in photosynthesis comes from water?

A)

Calvin

B)

Mayer

C)

Blackman

D)

Ruben, Hassid and Kamen

View Answer
112) The process in which water is split during photosynthesis is:

A)

plasmolysis

B)

photolysis

C)

hydrolysis

D)

haemolysis

View Answer
113) Heroin is obtained from plant of family:

A)

Papaveraceae

B)

Leguminosae

C)

Cruciferae

D)

Liliaceae

View Answer
114) HIV has a protein coat and a genetic material which is:

A)

ss-RNA

B)

ds-RNA

C)

ds-DNA

D)

ss-DNA

View Answer
115) More\[\text{C}{{\text{O}}_{\text{2}}}\]is evolved than the volume of oxygen consumed. when the respiratory substrate is:

A)

fat

B)

sucrose

C)

glucose

D)

organic acid

View Answer
116) Immunoglobin found abundantly in serum is:

A)

IgM

B)

IgA

C)

IgN

D)

IgG

View Answer
117) During the process of blood coagulation vitamin-K helps in the:

A)

formation of thromboplastin

B)

formation of prothrombin

C)

conversion of prothrombin to thrombin

D)

conversion of fibrinogen to fibrin

View Answer
118) Krebs cycle begins with the reaction:

A)

citric acid+ acetyl Co-A

B)

oxaloacetic acid + pyruvic acid

C)

oxaloacetic acid + Citric acid

D)

oxaloacetic + acetyl Co-A

View Answer
119) Contraction of gall bladder is carried by:

A)

rennin

B)

gastrin

C)

cholecystokinin

D)

none of the above

View Answer
120) Foetal sex is determined by examining cells from amniotic fluid looking for:

A)

chiasmata

B)

Ban-bodies

C)

sex-chromosomes

D)

drumsticks

View Answer
121) Theory of inheritance of acquired characters was given by:

A)

Darwin

B)

Wallace

C)

Lamarck

D)

de Vries

View Answer
122) Removal of anthers of, some flowers during plant breeding is:

A)

emasculation

B)

anthesis

C)

pollination

D)

for collection of pollen

View Answer
123) Transgenic crops are modified through genetic engineering to develop natural resistance to insect pests. Which one is a transgenic plant?

A)

Tobacco and cotton

B)

Tomato and rice

C)

Maize and sugarcane

D)

Tomato and wheat

View Answer
124) Neo-Darwinism believes that new species develops through:

A)

mutations

B)

hybridization

C)

mutations with natural selection

D)

continuous variations with natural selection

View Answer
125) Most hazardous metal pollutant of automobile exhaust is:

A)

cadmium

B)

lead

C)

mercury

D)

copper

View Answer
126) VAM is useful for:

A)

phosphate nutrition

B)

breaking of dormancy

C)

decrease in diseases

D)

retarding flowering

View Answer
127) Parathyroid hormone is a:

A)

peptide

B)

carbohydrate

C)

lipid

D)

steroid

View Answer
128) A clone is:

A)

heterozygote. obtained asexually

B)

homozygote obtained asexually

C)

heterozygote produced by sexual methods

D)

homozygote produced by sexual reproduction

View Answer
129) A petroleum plant is:

A)

Euphorbia lathyrus

B)

Acaciaarabica

C)

Pinus roxburghii

D)

Prosopis cineraria

View Answer
130) Progesterone hormone is secreted by:

A)

corpus albicans

B)

corpus callosum

C)

corpus luteum in ovaries

D)

corpus uteri

View Answer
131) Triploid endosperm occurs only in:

A)

angiosperms

B)

gymnosperms

C)

pteridophytes

D)

spermatophytes

View Answer
132) Cinchona offlcinalis belongs to family:

A)

Cruciferae,

B)

Malvaceae

C)

Rubiaceae

D)

Leguminosae

View Answer
133) Meiosis in AaBb will produce gametes:

A)

AB, aB, Ab, ab

B)

AB, ab

C)

Aa, bb

D)

Aa, Bb

View Answer
134) Respiratory centre in brain occurs in:

A)

medulla oblongata

B)

cerebellum

C)

hypothalamus

D)

pericardium

View Answer
135) Capitulum inflorescence is found in:

A)

Liliaceae

B)

Papilionaceae

C)

Compositae

D)

Rosaceae

View Answer
136) Mutations are generally induced by means of:

A)

\[\alpha -rays\]

B)

\[\beta -rays\]

C)

\[\gamma -rays\]

D)

UV radiations

View Answer
137) Pollen grains are shed at:

A)

1-celled stage

B)

2-3- celled stage

C)

4- celled stage

D)

5- celled stage

View Answer
138) Turners syndrome is caused by:

A)

polyploidy

B)

autosomal aneuploidy

C)

sex-chromosome aneuploidy

D)

trisomy

View Answer
139) Phrase Survival of the Fittest was used by:

A)

Hugo de Vries

B)

Charles Darwin

C)

Herbert Spencer

D)

Jean Baptiste Lamarck

View Answer
140) Entry of pollen tube through micropyle is:

A)

porogamy

B)

mesogamy

C)

pseudogamy

D)

chalazogamy

View Answer
141) Micropyle helps in:

A)

germination of pollen grain

B)

growth of pollen tube

C)

coming out of pollen tube from pollen grain

D)

allowing entry of pollen tube

View Answer
142) In mature RBC, nucleus is present in:

A)

frog

B)

rabbit

C)

both [a] and [b]

D)

neither in frog noir in rabbit

View Answer
143) Microbial insecticide is:

A)

Bacillus polymixa

B)

Bacillus brevis

C)

Bacillus subtilis

D)

Bacillus thuringiensis

View Answer
144) Gas released during Bhopal tragedy was:

A)

sodium isothiocyanate

B)

methyl isocyanate

C)

potassium isothiocyanate

D)

ethyl isothiocyanate

View Answer
145) banana, which of the following part is edible?

A)

Epicarp

B)

Mesocarp

C)

Endocarp

D)

Both [b] and [c]

View Answer
146) In pond ecosystem, diatoms represent:

A)

producers

B)

primary consumers

C)

secondary consumers

D)

tertiary consumers

View Answer
147) Sorosis is found in:

A)

jack fruit

B)

mulberry

C)

fig

D)

both [a] and [b]

View Answer
148) Sertoli cells are involved in:

A)

respiration

B)

nutrition of sperms

C)

excretion

D)

development of sex organs

View Answer
149) The myocardium is found in :

A)

heart of mammals

B)

brain of mammals

C)

lungs of mammals

D)

testes of mammals

View Answer
150) Plasmid is:

A)

plastid

B)

algae

C)

fungus

D)

extra nuclear DNA of bacterial cell

View Answer

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