Solved papers for DUMET Medical DUMET Medical Solved Paper-2006

DUMET Medical Solved Paper-2006 Total Questions - 200

1) A network of four capacitors of capacity equal to \[{{C}_{1}}=C,\,C{{ }_{2}}=2C,\,{{C}_{3}}\,=3C\]and \[{{C}_{4}}\,=4C\] are connected to a battery as shown in the figure. The ratio of the charges on \[{{C}_{2}}\] and \[{{C}_{4}}\] is.:

A)

\[\,\frac{22}{3}\]

B)

\[\,\frac{3}{22}\]

C)

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

D)

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

View Answer
2) 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
3) What is dimensional formula of thermal conductivity?

A)

\[[ML{{T}^{-1}}{{\theta }^{-1}}]\]

B)

\[[ML{{T}^{-3}}{{\theta }^{-1}}]\]

C)

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

D)

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

View Answer
4) A block C of mass m is moving with velocity \[{{v}_{o}}\]and collides elastically with block A of mass m and connected to another block B of mass 2m through spring of spring constant k. What is k, if \[{{x}_{o}}\] is compression of spring when velocity of A and B is same?

A)

\[\frac{m{{v}_{0}}^{2}}{{{x}_{0}}^{2}}\]

B)

\[\frac{m{{v}_{0}}^{2}}{2{{x}_{0}}^{2}}\]

C)

\[\frac{3}{2}\frac{m{{v}_{0}}^{2}}{{{x}_{0}}^{2}}\]

D)

\[\frac{2}{3}\frac{m{{v}_{0}}^{2}}{{{x}_{0}}^{2}}\]

View Answer
5)   The coefficient of static friction \[{{\mu }_{s,}}\]between block A of mass 2 kg and the table as shown in the figure, is 0.2. What would be the maximum mass value of block B, so that the two blocks do not move? The string and the pulley are assumed to be smooth and massless.\[(g=10\,m/{{s}^{2}})\]

A)

2.0kg

B)

4.0kg

C)

0.2kg

D)

0.4kg

View Answer
6) A bullet of mass 20 g and moving with 600 m/s collides with a block of mass 4 kg hanging with the string. What is velocity of bullet when it comes out of block, if block rises to height 0.2 m after collision?

A)

200 m/s

B)

150 m/s

C)

400 m/s

D)

300 m/s

View Answer
7) What is moment of inertia in terms of angular momentum (L) and kinetic energy (K)?

A)

\[\frac{{{L}^{2}}}{K}\]

B)

\[\frac{L}{2K}\]

C)

\[\frac{L}{2{{K}^{2}}}\]

D)

\[\frac{L}{2K}\]

View Answer
8) A disc of mass 2 kg and radius 0.2 m is rotating with angular velocity 30rad/s. What is angular velocity, if a mass of 0.25 kg is put on periphery of the disc?

A)

24 rad/s

B)

36 rad/s

C)

15 rad/s

D)

26 rad/s

View Answer
9) If a body is raised from the surface of the earth upto height R, what is the change in potential energy?

A)

\[mgR\]

B)

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

C)

\[\frac{mgR}{2}\]

D)

\[\frac{mgR}{4}\]

View Answer
10) A piston of cross-sectional area A is fitted in cylinder in which gas of volume V at pressure P is enclosed. Gas obeys Boyles law, what is angular frequency, if piston is displaced slightly?

A)

\[\sqrt{\frac{Ag}{V}}\]

B)

\[2\sqrt{\frac{Ag}{V}}\]

C)

\[\sqrt{\frac{2Ag}{V}}\]

D)

\[\frac{3Ag}{V}\]

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

A)

5 MHz

B)

6 GHz

C)

5 kHz

D)

500 MHz

View Answer
12) Carbon, silicon and germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by \[{{({{E}_{g}})}_{C}},\]\[{{({{E}_{g}})}_{Si}}\] and\[{{({{E}_{g}})}_{Ge}}\] respectively. Which one of the following relationships is true in their case?

A)

\[{{({{E}_{g}})}_{C}}>{{({{E}_{g}})}_{Si}}\]

B)

\[{{({{E}_{g}})}_{C}}={{({{E}_{g}})}_{Si}}\]

C)

\[{{({{E}_{g}})}_{C}}<{{({{E}_{g}})}_{Ge}}\]

D)

\[{{({{E}_{g}})}_{C}}<{{({{E}_{g}})}_{Si}}\]

View Answer
13) De-Broglie wavelength of photoelectrons is 1 A what is stopping potential?

A)

151V

B)

15.3V

C)

12.3V

D)

13.6V

View Answer
14)  A piston Filled in cylindrical pipe is pulled as shown in the figure. A tuning fork is sounded at open end and loudest sound is heard at open length 13 cm, 41 cm and 69 cm. The frequency of tuning fork, if velocity of sound is 350 m/s is :

A)

1250 Hz

B)

625 Hz

C)

417 Hz

D)

715 Hz

View Answer
15) A man is standing on the plate form and one train is approaching and another train is going away with speed of 4 m/s, frequency of sound produced by train is 240 Hz. What will be the number of beats heard by him per second?

A)

12

B)

Zero

C)

6

D)

3

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

A)

12

B)

6

C)

8/3

D)

3

View Answer
17) In a transformer loss due to eddy currents is minimized by :

A)

laminating the core

B)

laminating the core of steel

C)

increasing the number of turns of primal coil

D)

lubricating the core

View Answer
18) Permanent magnet has properties retentivity and coercivity respectively :

A)

high-high

B)

low-low

C)

low-high

D)

high-low

View Answer
19) Hydrogen bomb is based upon :

A)

fission

B)

fusion

C)

chemical reaction

D)

transmutation

View Answer
20) Six moles of \[{{O}_{2}}\] gas is heated from \[{{20}^{o}}C\] to \[{{35}^{o}}C\] at constant volume. If specific heat capacity l constant pressure is 8cal/mol-K and R = 8.31 J/mol-K, what is change in internal energy of gas?

A)

180 cal

B)

300 cal

C)

360 cal

D)

540 cal

View Answer
21) In Carnot engine efficiency is 40% at hot reservoir temperature T. For efficiency 5% what will be temperature of hot reservoir?

A)

\[\frac{T}{5}\]

B)

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

C)

\[6T\]

D)

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

View Answer
22)  A ball of mass 2 kg moving with velocity 3 ml collides with spring of natural length 2 m art force constant 144 N/m. What will be length of compressed spring?

A)

2m

B)

1.5m

C)

1m

D)

0.5m

View Answer
23) A proton moving vertically downward enters a magnetic field pointing towards north. In which direction proton will deflect?

A)

East

B)

West

C)

North

D)

South

View Answer
24) Induced emf in the coil depends upon :

A)

conductivity of coil

B)

amount of flux

C)

rate of change of linked flux

D)

resistance of coil

View Answer
25) Within depletion region of p-n junction of diode:

A)

p-side is positive and n-side negative

B)

p-side is negative and n-side is positive

C)

both side positive or both negative

D)

both side neutral

View Answer
26) 27 small drops each having charge q and radius coalases to form big drop. How many times charge and capacitance will become?

A)

3, 27

B)

27, 3

C)

27, 27

D)

3, 3

View Answer
27) Which of the following is not a process involved in fabrication of IC?

A)

Polymerisation

B)

Diffusion

C)

Photolithography

D)

Metallisation

View Answer
28) X-rays are used in determining the molecular structure of crystalline because :

A)

its energy is high

B)

it can penetrate the material

C)

its wavelength is comparable to in teratomic distance

D)

its frequency is low

View Answer
29) In a radioactive material the activity at time \[{{t}_{1}}\] is \[{{R}_{1}}\] and at a later time \[{{t}_{2}}\], it is \[{{R}_{2}}\]. If the decay constant of the material is \[\lambda ,\] then:

A)

\[{{R}_{1}}={{R}_{2}}{{e}^{-\lambda ({{t}_{1}}-{{t}_{2}})}}\]

B)

\[{{R}_{1}}={{R}_{2}}{{e}^{\lambda ({{t}_{1}}-{{t}_{2}})}}\]

C)

\[{{R}_{1}}={{R}_{2}}({{t}_{2}}/{{t}_{1}})\]

D)

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

View Answer
30) 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
31) A string has tension T. For tripling the frequency, the tension in string will become :

A)

\[3T\]

B)

\[\frac{T}{9}\]

C)

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

D)

\[9T\]

View Answer
32)  A steel ball of mass 5 g is thrown downward with velocity 10 m/s from height 19.5 m. It penetrates sand by 50 cm. The change in mechanical energy will be : (g = 10 m/s )

A)

1J

B)

1.25 J

C)

1.51 J

D)

1.75J

View Answer
33) Two identical springs are connected in series and parallel as shown in the figure. If \[{{f}_{s}}\] and \[{{f}_{p}}\] are frequency of series and parallel     arrangement what is \[\frac{{{f}_{s}}}{{{f}_{p}}}\]?

A)

1:2

B)

2:1

C)

1:3

D)

3:1

View Answer
34) Light of frequency \[v\] falls on material of threshold frequency \[{{v}_{0}}\]. Maximum kinetic energy of emitted electron is proportional to :

A)

\[V-{{V}_{0}}\]

B)

\[V\]

C)

\[\sqrt{V-{{V}_{0}}}\]

D)

\[{{V}_{0}}\]

View Answer
35) Suppose the gravitational force varies inversely as the nth power of the distance. The time period of a planet in circular orbit of radius R around sun will be proportional to :

A)

\[{{R}^{(n-1)/2}}\]

B)

\[{{R}^{(n+1)/2}}\]

C)

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

D)

\[{{R}^{n+1}}\]

View Answer
36) A wave equation is given by \[y=4\,\sin \,\left[ \pi \left( \frac{t}{5}-\frac{x}{9}+\frac{1}{6} \right) \right]\]where x is in cm and t in second. Which of the following is true?

A)

\[\lambda =18\,cm\]

B)

\[v=4\,m/s\]

C)

\[a=0.4\,m\]

D)

\[f=50\,Hz\]

View Answer
37) A light moves from denser to rarer medium, which of the following is correct?

A)

Energy increases

B)

Frequency increases

C)

Phase changes by 90°

D)

Velocity increases

View Answer
38) A small disc of radius 2 cm is cut from a disc of radius 6 cm, if the distance between their centers is 3.2 cm, what is shift in the centre of mass of the disc?

A)

0.4cm

B)

2.4cm

C)

1.8cm

D)

1.2cm

View Answer
39) A particle accelerating uniformly has velocity v at time t1. What is work done in time t?

A)

\[\frac{1}{2}\frac{m{{v}^{2}}}{{{t}_{1}}^{2}}{{t}^{2}}\]

B)

\[\frac{1}{2}{{\left( \frac{mv}{{{t}_{1}}} \right)}^{2}}{{t}^{2}}\]

C)

\[\frac{m{{v}^{2}}}{{{t}_{1}}^{2}}{{t}^{2}}\]

D)

\[\frac{2m{{v}^{2}}}{{{t}_{1}}^{2}}{{t}^{2}}\]

View Answer
40) 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
41) \[\gamma \]-rays are originated from :

A)

nucleus

B)

outermost shell of nucleus

C)

innermost shell of nucleus

D)

none of the above

View Answer
42) What is not true for equipotential surface for uniform electric Held?

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
43) Two copper wires of length \[l\] and 2\[l\] have radii r and 2r respectively. What is the ratio of their specific resistances?

A)

1:2

B)

2:1

C)

1:1

D)

1: 3

View Answer
44) A metro trains starts from rest and in 5 s achieves 108 km/h. After that it moves with constant velocity and comes to rest after travelling 45 m with uniform retardation. If total distance travelled is 395 m, find total time of travelling.

A)

12.2s

B)

15.3s

C)

9s

D)

17.2s

View Answer
45) The radius of germanium (Ge) nuclide is measured to be twice the radius of \[_{4}^{9}\]Be. The number of nucleons in Ge are :

A)

73

B)

74

C)

75

D)

72

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

A)

300 Hz

B)

350 Hz

C)

375 Hz

D)

415 Hz

View Answer
47) The displacement or particle is given by \[x={{a}_{o}}+\frac{{{a}_{1}}t}{2}-\frac{{{a}_{2}}{{t}^{2}}}{3}\] What is its acceleration?

A)

Increase

B)

Decrease

C)

0.2

D)

Zero

View Answer
48) If \[\text{ }\!\!|\!\!\text{ }\mathbf{\vec{A}}\text{ }\!\!\times\!\!\text{ }\mathbf{\vec{B}}\text{ }\!\!|\!\!\text{ =}\sqrt{\text{3}}\mathbf{\vec{A}}\mathbf{.\vec{B},}\] then the value of \[\text{ }\!\!|\!\!\text{ }\mathbf{\vec{A}}\text{ }\!\!\times\!\!\text{ }\mathbf{\vec{B}}\text{ }\!\!|\!\!\text{ }\] is :

A)

\[{{({{A}^{2}}+{{B}^{2}}+AB)}^{1/2}}\]

B)

\[{{\left( {{A}^{2}}+{{B}^{2}}+\frac{AB}{\sqrt{3}} \right)}^{1/2}}\]

C)

\[A+B\]

D)

\[{{({{A}^{2}}+{{B}^{2}}+\sqrt{3}AB)}^{1/2}}\]

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

A)

Increase

B)

Decrease

C)

No change

D)

Cannot be determined

View Answer
50) The refractive index of the material of a prism is \[\sqrt{2}\] and its refracting angle is \[{{30}^{o}}\]. One of the refracting surfaces of the prism is made a mirror inwards. A beam of monochromatic light entering the prism from the other face will retrace its path after reflection from the mirrored surface, if its angle of incidence on the prism is:

A)

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

B)

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

C)

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

D)

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

View Answer
51) In which of the following \[\Delta {{H}_{f}}\] would not be zero?

A)

C(graphite)

B)

\[{{I}_{2}}(s)\]

C)

\[B{{r}_{2}}(l)\]

D)

red P

View Answer
52) Which of the following is not an actinoid?

A)

Am

B)

Cm

C)

Fm

D)

Tm

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

A)

\[V{{(CO)}_{6}}\]

B)

\[Cr{{(CO)}_{6}}\]

C)

\[Mn{{(CO)}_{6}}\]

D)

\[W{{(CO)}_{6}}\]

View Answer
54) Two concentration cells of Ag with Ag electrode in \[AgN{{O}_{3}}\]. In first cell concentration of one electrode is 1 M and other electrode is M and emf is 0.06 V. In second cell concentration of one electrode is 1 M and other electrode is 0.01 M, calculate emf of second cell.

A)

0.12V

B)

0.06V

C)

0.09V

D)

0.16V

View Answer
55) Which one has strongest hydrogen bond?

A)

F - H - - - F

B)

F - H - - - O

C)

S - H - - - F

D)

O - H - - - O

View Answer
56) Which has equilibrium constant as one?

A)

1 only

B)

2 only

C)

both 2 and 3

D)

both 1 and 3

View Answer
57) Which of the following does not effect half-life of 1st order reaction?

A)

Initial concentration

B)

Catalyst

C)

Temperature

D)

Pressure

View Answer
58) How many ions will be furnished by\[CoC{{l}_{3}}\,.\,\,6N{{H}_{3}}\]?

A)

3

B)

4

C)

either [a] or [b]

D)

2

View Answer
59) Reactivity order of following towards\[NaOE,\,EtOH\]:

A)

\[3>2>1\]

B)

\[2>1>3\]

C)

\[1>2>3\]

D)

\[3>1>2\]

View Answer
60) Number of atoms in bcc :

A)

1

B)

2

C)

3

D)

4

View Answer
61) Which one of the following is paramagnetic?

A)

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

B)

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

C)

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

D)

\[CO\]

View Answer
62) \[pH\] or \[1L\,0.1\,M\,HCl\]when 5 g of HF is added:

A)

0.53

B)

1

C)

0.1

D)

0.01

View Answer
63) Principle of H-bomb is:

A)

fusion

B)

fission

C)

chemical reaction

D)

interaction between nucleus and electron

View Answer
64) Potassium phthalimide reacts with A which on hydrolysis gives isopentyl-amine, what is A?

A)

\[C{{H}_{3}}-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}C{{H}_{2}}Br\]

B)

\[C{{H}_{3}}-\overset{\begin{smallmatrix} C{{H}_{2}}Br \\ | \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{2}}C{{H}_{2}}Br\]

C)

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

D)

\[C{{H}_{3}}-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix} | \\ Br \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{2}}-C{{H}_{3}}\]

View Answer
65) Order of stability of vinyl, allyl, tertiary radicals is :

A)

tertiary, vinyl, allyl

B)

vinyl, tertiary, allyl

C)

tertiary, allyl, vinyl

D)

allyl, tertiary, vinyl

View Answer
66) \[R-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,-Cl+{{H}_{2}}\xrightarrow[S]{Pd/BaS{{O}_{4}}}RCHO\], the name of reaction is:

A)

Cannizaro reaction

B)

Rosenmund reduction

C)

Clemmensen reduction

D)

Wolff-Kishner reduction

View Answer
67) Toluene by Etard reaction gives:

A)

ortho cresol

B)

boracic acid

C)

benzyl alcohol

D)

benzaldehyde

View Answer
68) At high pressure van der Waals equation becomes :

A)

\[PV=RT\]

B)

\[PV=RT+\frac{a}{V}\]

C)

\[PV=RT-\frac{a}{V}\]

D)

\[PV=RT+Pb\]

View Answer
69) Units of van der Waals constant a are :

A)

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

B)

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

C)

arm \[{{L}^{2}}mo{{l}^{-2}}\]

D)

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

View Answer
70) Which glass will not crack when temperature changes?

A)

Pyrex

B)

Boro silicate

C)

Calcium silicate

D)

Flint

View Answer
71) Which of the following is not silicate?

A)

Zeolite

B)

Feldspar

C)

Silica

D)

Ultramarine

View Answer
72) Which of the following carbocations is most stable?

A)



B)

C)



D)



View Answer
73) Which of the following is nucleophilic addition reaction?

A)

\[C{{H}_{3}}CHO+HCN\xrightarrow{{}}\]

B)

Ethene \[\xrightarrow{{{H}^{+}},{{H}_{2}}O}\]

C)

Ethyne \[\xrightarrow[CC{{l}_{4}}]{B{{r}_{2}}}\]

D)

Ethene \[\xrightarrow{HCl}\]

View Answer
74) Phosgene is a poisonous gas obtained in chloroform bottles, substance used to make it non-poisonous is:

A)

formic acid

B)

ethanol

C)

dichloro methane

D)

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

View Answer
75) Aniline reacts with acetic anhydride to give :

A)

B)

C)

D)

View Answer
76) Depression in freezing point is 6 K for \[NaCl\]solution. If \[{{K}_{f}}\] for water is 1.86 K/kg mol, amount of \[NaCl\] dissolved in 1 kg water is:

A)

3.42

B)

1.62

C)

3.24

D)

1.71

View Answer
77) Starch is converted to ethanol by fermentation, the sequence of enzymes used are:

A)

amylase, maltase, zymase

B)

diastase, maltase, zymase

C)

amylase, invertase, zymase

D)

amylase, zymase, maltase

View Answer
78) IUPAC name of \[Cl-C{{H}_{2}}-CH=\overset{\begin{smallmatrix} C{{H}_{2}}C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{2}}-OH\]

A)

1-chloro-2-ethyl-4-hydroxybut-2-ene

B)

4-hydroxy-l-chloro 2-ethyl but-2-ene

C)

4-chloro 2-ethyl but-2-en-l-ol

D)

2-ethyl 4-chloro but-2-en-l-ol

View Answer
79) Most oxidising agent is:

A)

\[{{[W{{O}_{4}}]}^{2-}}\]

B)

\[{{[Cr{{O}_{4}}]}^{2-}}\]

C)

\[{{[Ce{{O}_{4}}]}^{2-}}\]

D)

\[{{[Mn{{O}_{4}}]}^{2-}}\]

View Answer
80) Which of the following configuration have crystal field splitting energy as zero with low field as well as high field ligand?

A)

\[{{d}^{4}}\]

B)

\[{{d}^{6}}\]

C)

\[{{d}^{8}}\]

D)

\[{{d}^{10}}\]

View Answer
81) \[{{C}_{6}}{{H}_{9}}Br\xrightarrow[-{{(C{{H}_{3}})}_{3}}COH]{{{(C{{H}_{3}})}_{3}}C{{O}^{-}}{{K}^{+}}}X\xrightarrow{C{{H}_{2}}=CHCOC{{H}_{3}}}B\]conversion of X to B is:

A)

Claisen reaction

B)

Perkin reaction

C)

Diels-Alder reaction

D)

Mannich reaction

View Answer
82) Which of the following is not a copolymer?

A)

Nylon 6

B)

Nylon 6, 10

C)

Nomex

D)

Dacron

View Answer
83) A compound has two different asymmetric carbon then the number of stereomers :

A)

4

B)

2

C)

3

D)

1

View Answer
84) Burning of Mg is extinguished by:

A)

throwing \[{{N}_{2}}\] liquid

B)

throwing sand

C)

throwing ice

D)

throwing water

View Answer
85) Flame test is not given by:

A)

Ca

B)

Ba

C)

Mg

D)

Li

View Answer
86) Solubility of \[Pb{{I}_{2}}\] is \[4\times {{10}^{-5}}\]. Its solubility product is:

A)

\[6.4\times {{10}^{-15}}\]

B)

\[6.4\times {{10}^{-14}}\]

C)

\[2.5\times {{10}^{-13}}\]

D)

\[6.4\times {{10}^{-13}}\]

View Answer
87) No two electrons of an atom can have the same set of four quantum numbers, this is:

A)

Paults exclusion principle

B)

Hunds rule

C)

Aufbau principle

D)

\[n+l\] rule

View Answer
88) Which of the following have pyramidal structure?

A)

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

B)

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

C)

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

D)

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

View Answer
89) Which of the following is non polar?

A)

\[S{{F}_{6}}\]

B)

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

C)

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

D)

\[PC{{l}_{4}}F\]

View Answer
90) Bond energy of \[{{F}_{2}},C{{l}_{2}},B{{r}_{2}},{{I}_{2}}\] follows the order:

A)

\[B{{r}_{2}}>{{F}_{2}}>C{{l}_{2}}>{{I}_{2}}\]

B)

\[{{F}_{2}}>C{{l}_{2}}>B{{r}_{2}}>{{I}_{2}}\]

C)

\[{{I}_{2}}>{{F}_{2}}>B{{r}_{2}}>C{{l}_{2}}\]

D)

\[{{F}_{2}}>{{I}_{2}}>B{{r}_{2}}>C{{l}_{2}}\]

View Answer
91) Ethene 4- bromine, chloride ion, nitrate ion, number of products :

A)

1

B)

2

C)

3

D)

4

View Answer
92) Which of the following is not coloured?

A)

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

B)

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

C)

\[F{{e}^{2+}}\]

D)

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

View Answer
93) For the nuclear reaction \[_{12}^{24}Mg{{+}_{1}}{{D}^{2}}\to \alpha +\]? the missing nuclide is:

A)

\[_{11}^{23}Na\]

B)

\[_{12}^{23}Mg\]

C)

\[_{11}^{22}Mg\]

D)

\[_{12}^{26}Mg\]

View Answer
94) Which of the following statements is correct?

A)

Greater the number of unpaired electron more is paramagnetic character

B)

Greater the number of unpaired electron less is paramagnetic character

C)

Elements are mostly diamagnetic and compounds are paramagnetic

D)

Elements are mostly paramagnetic and compounds are diamagnetic

View Answer
95) Configuration of mannose and glucose differ at C-2 position they are termed as:

A)

epimers

B)

anomers

C)

racimers

D)

mesomers

View Answer
96) For spontaneous reaction or the reaction at equilibrium which of the following is wrong?

A)

\[\Delta H<T\Delta S\] reaction is exothermic and \[T\Delta S\] is + ve

B)

\[\Delta H=-ve,\,T\Delta S=0\]

C)

\[\Delta H=\,T\Delta S\]

D)

\[\Delta H=-ve,\,\,T\Delta S=-ve\]

View Answer
97) A gas cannot be liquefied above:

A)

critical temperature

B)

Boyle temperature

C)

300K

D)

inversion temperature

View Answer
98) The uncertainty in momentum of an electron is \[1\times {{10}^{-5}}\]kgm/s. The uncertainty in its position will be \[(h=6.63\times {{10}^{-34}}Js)\]:

A)

\[5.28\times {{10}^{-30}}m\]

B)

\[5.25\times {{10}^{-28}}m\]

C)

\[1.05\times {{10}^{-26}}m\]

D)

\[2.715\times {{10}^{-3}}m\]

View Answer
99) Cod liver oil is:

A)

solution

B)

an emulsion

C)

colloidal solution

D)

suspension

View Answer
100) Which of the following is a simple ether?

A)

\[{{C}_{6}}{{H}_{5}}OC{{H}_{3}}\]

B)

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

C)

\[{{C}_{6}}{{H}_{5}}OC{{H}_{3}}\]

D)

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

View Answer
101) Which plant hormone promotes seed, bud dormancy and causes stomatal closure?

A)

IAA

B)

Abscisic acid

C)

\[G{{A}_{1}}\]

D)

Cytokinin

View Answer
102) VLscum album grows on trees. This is an example of:

A)

symbiosis

B)

parasitism

C)

commensalism

D)

predation

View Answer
103) National Botanical Research Institute is located at:

A)

New Delhi

B)

Mumbai

C)

Lucknow

D)

Dehradoon

View Answer
104) Chlorophyll-b is not present in

A)

green algae

B)

bryophytes

C)

Spirogyra

D)

blue-green algae

View Answer
105) Sal and teak is the dominant species in which of the following forests?

A)

Tropical dry deciduous forests

B)

Temperate deciduous forests

C)

Temperate rain forests

D)

None of the above

View Answer
106) In addition to absence of chlorophyll what is the other difference between fungi and higher plants?

A)

Type of nutrition and composition of cell wall

B)

Cell type

C)

Nucleus

D)

Reproduction

View Answer
107) First stable product of \[{{C}_{3}}\] pathway is:

A)

Oxalo-acetic acid

B)

3 phosphoglyceric acid

C)

RuBP

D)

Phosphoenol pyruvate

View Answer
108) Which is an example of true pyramid in an ecosystem?

A)

Pyramid of a biomass

B)

Pyramid of number

C)

Pyramid of energy

D)

None of the above

View Answer
109) A gene which gives multiple phenotypic effects:

A)

complementary genes

B)

lethal genes

C)

pleiotropic genes

D)

holandric genes

View Answer
110) Stop codons are:

A)

AUG, GUG

B)

UAA, UGA, UAG

C)

UAC, UGG

D)

AGU, AGA, UAC

View Answer
111) Which is not true about prokaryotes?

A)

DNA is complexed with histones

B)

Well developed nucleus absent

C)

Mesosome present

D)

Mitochondria absent

View Answer
112) Ozone layer is depleted by :

A)

\[S{{O}_{2}},N{{O}_{3}}\]

B)

\[CFC,C{{H}_{4}},{{N}_{2}}O\]

C)

\[CO,C{{H}_{4}},{{O}_{2}}\]

D)

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

View Answer
113) Which is an electron carrier common to both photosynthesis and respiration?

A)

Cytochrome

B)

Phytochrome

C)

Pheophytin

D)

Plastocyanin

View Answer
114) Nuclear endosperm has :

A)

every nuclear division followed by wall formation

B)

initially free-nuclear divisions followed by wall formation

C)

first division followed by wall formation and other free nuclear

D)

none of the above

View Answer
115) Hesperidium of orange is a modification of:

A)

berry

B)

drupe

C)

pome

D)

aggregate fruit

View Answer
116) Ratio of progency when a red coloured heterozygote is crossed with a white coloured plant in which red colour is dominant to white colour:

A)

3 : 1

B)

1 : 1

C)

1 : 2 : 1

D)

9 : 3 : 3 : 1

View Answer
117) Repressible enzymes are formed :

A)

in the absence of corepressor

B)

in the presence of corepressor

C)

in the presence of apressor

D)

all of the above

View Answer
118) In drumstick the seeds are dispersed by:

A)

water

B)

animals

C)

wind

D)

explosive mechanism

View Answer
119) What is not seen during mitosis in somatic cells?

A)

Spindle fibres

B)

Chromosome movement

C)

Disappearance of nucleolus

D)

Synapsis

View Answer
120) Leaf colour in Mirabilis jalapa is an example of:

A)

non-Mendelian inheritance

B)

Mendelian inheritance

C)

chemical inheritance

D)

both [b] and [c]

View Answer
121) Taxon is a:

A)

group of same species

B)

any rank in taxomonic hierarchy

C)

group of similar genera

D)

subdivision of kingdom

View Answer
122) Statoliths are involved in:

A)

phototropism

B)

hydrotropism

C)

chemotropism

D)

gravitropism

View Answer
123) Lampbrush chromosomes are seen in:

A)

interphase

B)

zygotene

C)

diplotene

D)

metaphase

View Answer
124) The transcription unit is:

A)

TATA box to start point

B)

TATA box to stop codon

C)

Start point to stop codon

D)

35 sequence to start point

View Answer
125) Which is a symbiont inside human intestine?

A)

Streptococcus pneumoniae

B)

Neisseria meningitidis

C)

E. coli

D)

Treponema pallidum

View Answer
126) Biosphere reserves are different from National Park as:

A)

plants and animals are protected in biosphere reserves

B)

humans are integral part of biosphere reserves

C)

humans are not involved in biosphere reserves

D)

none of the above

View Answer
127) Excessive accumulation of organic matter in water bodies leads to :

A)

decrease in species diversity

B)

increase in species diversity

C)

green house effect

D)

no effect on species diversity

View Answer
128) Study of periodical changes in plants in relation to seasonal changes :

A)

Physiognomy

B)

Phycology

C)

Phenology

D)

Photoperiodism

View Answer
129) Human population growth is:

A)

lag

B)

stationary

C)

exponential

D)

none of these

View Answer
130) Maximum noise permissible during day time in residential areas:

A)

75 dB

B)

55 dB

C)

65 dB

D)

45 dB

View Answer
131) Both mimic and model are harmful to the predator;

A)

Batesian mimicry

B)

warning mimicry

C)

concealing mimicry

D)

Mullerian mimicry

View Answer
132) Phylogenetic system is based on :

A)

evolutionary and genetic character

B)

reproductive characters

C)

morphological characters

D)

natural affinities

View Answer
133) The gene interaction when one gene masks the effect:

A)

complementary gene action

B)

supplementary gene action

C)

duplicate gene action

D)

epistasis

View Answer
134) Probes used in DNA finger-printing initially:

A)

single stranded RNA

B)

mini satellite

C)

19 base long oligonucleotide

D)

all of the above

View Answer
135) What helps in flowering?

A)

Cytochrome

B)

ABA

C)

Phytochrome

D)

Ethylene

View Answer
136) Kyoto protocol has specified the commitments of different countries:

A)

to mitigate climate changes

B)

limit production of chlorofluorocarbons

C)

to prepare a world climatic programme

D)

none of the above

View Answer
137) Overlapping region between two ecosystems :

A)

biome

B)

ecotone

C)

niche

D)

photiczone

View Answer
138) Five kingdom classification includes :

A)

Monera, Protista, Fungi, Plantae, Animalia

B)

Algae, Fungi, Bryophyta, Pteridophyta, Gymnosperms

C)

Virus, Prokaryota, Fungi, Plantae, Animalia

D)

Monera, Protista, Animalia, Plantae, Algae

View Answer
139) In ecotone some species become abundant:

A)

sibling species

B)

endemic species

C)

rare species

D)

edge species

View Answer
140) Citric acid is industrially best produced by:

A)

Streptococcus lactis

B)

Aspergillus niger

C)

Penicillium purpurogenom

D)

Lactobacillus debreukii

View Answer
141) Actinomycetes which is a symbiotic nitrogen fixing organism in many plants.:

A)

Streptomyces

B)

Anabaena

C)

Frankia

D)

Rhizobium

View Answer
142) Claviceps is a member of:

A)

Ascomycetes

B)

Basidiomycetes

C)

Zygomycetes

D)

Phycomycetes

View Answer
143) Phycomycetes is a class in kingdom :

A)

Protista

B)

Fungi

C)

Plantae

D)

Animala

View Answer
144) In eukaryotes basic structural unit made of histone and DNA:

A)

nucleosome

B)

nucleolus

C)

chromosome

D)

lysosome

View Answer
145) Which is a bioinsecticide?

A)

Cactoblastis cactorum

B)

Anabaena

C)

Bacillus thruingiensis

D)

Rhizobium

View Answer
146) Hardening in tissue culture is :

A)

keeping at \[30-{{50}^{o}}C\] temperature for about 30 minutes

B)

acclimatisation of tissue culture plants slowly before growing in the field

C)

plunging the vials into water at \[37-{{40}^{o}}C\]

D)

none of the above

View Answer
147) In protoplast fusion which chemical is used :

A)

DMSO

B)

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

C)

pectinase

D)

PEG

View Answer
148) Sex chromosomes for the first time was discovered in which plant?

A)

Sphaerocarpus

B)

Pisum sativum

C)

Nurospora

D)

Lathyrus odoratus

View Answer
149) Two or more codons coding for one amino acid:

A)

non-ambiguous

B)

degeneracy of codon

C)

non-overlapping of codon

D)

non sense codon

View Answer
150) Theory of Pangenesis was proposed by :

A)

Lamarck

B)

Weismann

C)

Hugo de Vries

D)

Darwin

View Answer
151) Philosophic zoologique written by:

A)

Darwin

B)

Linnaeus

C)

Lamarck

D)

Theophrastus

View Answer
152) Down syndrome is due to :

A)

trisomy of 13th chromosome

B)

non disjunction of 21st chromosome

C)

trisomy of 18th chromosome

D)

fusion of normal sperm with egg having 2X chromosome

View Answer
153) Marine teleost fishes excrete :

A)

uric acid

B)

ammonia

C)

urea

D)

none of these

View Answer
154) Antennary glands of crustaceans are meant for:

A)

excretion

B)

respiration

C)

digestion

D)

circulation

View Answer
155) Part of nephron impermeable to salt:

A)

distal convoluted tubules

B)

descending limb of loop of Henie

C)

assending limb of loop of Henie

D)

collecting duct

View Answer
156) Cilia of gills of bivalve molluscs help in:

A)

feeding

B)

digestion

C)

reproduction

D)

excretion

View Answer
157) Nodes of Ranvier are found in:

A)

non-myelinated nerve fibres

B)

myelinated nerve fibres

C)

both [a] and [b]

D)

none of the above

View Answer
158) Knee joint is:

A)

cartilageneous

B)

fibrous

C)

gliding joint

D)

synovial

View Answer
159) Myxoedema is a disorder of:

A)

parathyroid gland

B)

adrenal gland

C)

pituitary gland

D)

thyroid gland

View Answer
160) Which gland atrophies in adult?

A)

Pituitary

B)

Thymus

C)

Thyroid

D)

Adrenal

View Answer
161) Hoolock Gibbon (Indias only ape), is found in :

A)

Kaziranga bird Sanctuary

B)

Hazaribagh National Park

C)

Corbett National Park

D)

Gir National Park

View Answer
162) SA node is located in:

A)

lower lateral wall of right atrium

B)

upper lateral wall of right atrium

C)

upper lateral wall of left atrium

D)

lower lateral wall of left atrium

View Answer
163) The Wolffian duct gives rise to :

A)

scrotum

B)

labia major

C)

both [a] and [b]

D)

epididymis

View Answer
164) Hassals bodies/corpuscles:

A)

adrenal medula

B)

thyroid

C)

thymus

D)

parathyroid

View Answer
165) Allergens are ;

A)

infectious and increased secretion of IgE

B)

non-infectious and increased secretions of IgF

C)

injections and increased secretion of IgG

D)

non-infectious and increased secretion of IgM

View Answer
166) Hardy-Weinberg principle explains f

A)

genetic equilibrium

B)

non-random mating

C)

evolutionary force

D)

all of the above

View Answer
167) Pseudocoelomic organisms belong to:

A)

Arthropoda

B)

Annelida

C)

Mollusca

D)

Aschelminthes

View Answer
168) Pancreas is absent in which group of vertebrates?

A)

Reptiles

B)

Cyclostomates

C)

Birds

D)

Mammals

View Answer
169) Mouth parts of housefly are :

A)

siphoning type

B)

sponging type

C)

biting and chewing

D)

piercing and sucking

View Answer
170) Inclusive fitness theory is proposed by :

A)

Darwin

B)

Lamarck

C)

Weismann

D)

Hamilton

View Answer
171) Polytene chromosomes are found in :

A)

salivary gland

B)

oocytes

C)

green glands

D)

none of these

View Answer
172) Nissls granules are present in :

A)

RBC

B)

WBC

C)

both [a] and [b]

D)

nerve cells

View Answer
173) Chagas disease is caused by:

A)

Trypanosoma gambiense

B)

Plasmodium sp.

C)

Tiypanosoma cruzi

D)

Treponema pallidum

View Answer
174) Solenocytes are used for :

A)

elimination of nitrogenous excretory wastes

B)

respiration

C)

digestion

D)

all of the above

View Answer
175) Which of the following are required in minimum amount by human?

A)

Iron, Iodine, Carbon, Manganese, Copper, \[{{O}_{2}}\]

B)

Iron, Iodine, Manganese, Copper, Zinc, Fluorine

C)

Iron, Iodine, Manganese, Zinc, Hydrogen

D)

Nitrogen, Oxygen, Zinc, Fluorine

View Answer
176) Human dental formula is :

A)

\[\frac{3142}{3143}\]

B)

\[\frac{1003}{0003}\]

C)

\[\frac{2123}{2123}\]

D)

\[\frac{3143}{3143}\]

View Answer
177) HCl is secreted by:

A)

chief cells

B)

mucous cells

C)

salivary glands

D)

oxyntic cells

View Answer
178) Pancreatic secretion and gall bladder contraction are stimulated by:

A)

gastrin

B)

enterocrinin

C)

enterogasterone

D)

cholesystokinin

View Answer
179) Vit. \[{{B}_{12}}\] is available to ruminants by:

A)

plants

B)

microorganisms in caecum

C)

animals

D)

all of the above

View Answer
180) Energy released by carbohydrate, fats, protein is:

A)

4.1, 9.45, 5.65

B)

4.1, 5.65, 9.40

C)

5.4, 6.5, 8.9

D)

5.0, 7.8, 10.5

View Answer
181) Mode of nutrition in Trypanosoma is:

A)

saprozoic

B)

parasitic

C)

autotropic

D)

phototropic

View Answer
182) Fluid mosaic model was proposed by :

A)

Singer and Nicholson

B)

Robertson

C)

Danielli and Davson

D)

Huxley

View Answer
183) Postganglionic nerve fibres of sympathetic system are:

A)

adrenergic

B)

cholinergic

C)

both [a] and [b]

D)

none of these

View Answer
184) The taste receptors of cockroach are :

A)

compounds eyes

B)

companiform sensillae

C)

palps of maxillary and labium

D)

tactile hairs

View Answer
185) Acquired immunity is due to:

A)

physiological and inflammatory barrier

B)

lymphocytes

C)

erythrocytes

D)

NK cells

View Answer
186) Which is not used up in human body?

A)

Calcium

B)

Phosphorus

C)

Zinc

D)

Barium

View Answer
187) Secondary metabolite is:

A)

sugar

B)

glucose

C)

antibiotics

D)

all of these

View Answer
188) Lactose is composed of following compunents:

A)

glucose + fructose

B)

glucoe + glucose

C)

glucose + fructose + galactose

D)

glucose + galactose

View Answer
189) Species living in a restricted geographical areais :

A)

sympatric

B)

allopatric

C)

sibling

D)

keystone

View Answer
190) Ichthyophis belongs to class:

A)

Mammalia

B)

Reptilia

C)

Amphibia

D)

Aves

View Answer
191) The supporting and nutritive cells found in the brain are:

A)

ependymal cells

B)

microglia

C)

astrocytes

D)

oligodendrocytes

View Answer
192)  2\[n\] - 2 is known as :

A)

monosomic

B)

trisomic

C)

nullisomy

D)

polyploidy

View Answer
193) Arteries are :

A)

thin walled and blood flows under high pressure

B)

thick walled and blood flows under high pressure

C)

thick walled and blood flows under diminished pressure

D)

thin walled and blood flows under diminished pressure

View Answer
194) Tapetum is :

A)

protective

B)

reproductive

C)

nutritive

D)

respiratory

View Answer
195) Prolonged deficiency of thiamine in human diet may lead to:

A)

pellagra

B)

beri-beri

C)

anaemia

D)

haemorrhage

View Answer
196) Mycorrhiza is useful association because :

A)

it fixes atmospheric nitrogen

B)

it enhances absorption of nutrients from soil

C)

it kills pathogens

D)

it provides resistance against drought

View Answer
197) Theory of catastropism was supported by:

A)

Luis Pasteur

B)

A. I. Oparin

C)

Cuvier

D)

Haldane

View Answer
198) Which of the following is vestigial organ in human?

A)

coccyx

B)

splint bone

C)

wings

D)

pelvic girdle

View Answer
199) The mutation (mechanism of origin of variations) was suggest by:

A)

Mendel

B)

Darwin

C)

Lamarck

D)

de Vries

View Answer
200) Sporangia bearing leaves in pteridophytes are called:

A)

ramenta

B)

Son

C)

sporophylls

D)

indusium

View Answer