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Question and Answer

Saturday, 6 February 2016

Biology (part-3)

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Q: Virus consists of

O: (a) nucleic acid

(b) protein

(c) both a and b

(d) none of these

Ans. (c) both a and b



Q: Viruses that infect bacteria, multiply and cause their lysis are

O: (a) lysozymes

(b) lipolytic

(c) lytic

(d) lysogenic

Ans. (c) lytic



Q: Potato leaf roll or leaf curl of papaya are caused by

O: (a) fungi

(b) viruses

(c) bacteria

(d) nematodes

Ans. (b) viruses



Q: Infectious proteins are present in

O: (a) Gemini viruses

(b) prions

(c) viroids

(d) satellite viruses

Ans. (a) Gemini viruses



Q: Helical contractile sheath occurs in

O: (a) bacteria

(b) bacteriophage

(c) retroviruses

(d) fungi

Ans. (b) bacteriophage


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Physics (part-4)

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Q: The phenomenon of Brownian movement may be taken as evidence of

O: (a) kinetic theory of matter

(b) EMT of radiation

(c) corpuscular theory of light

(d) photoelectric phenomenon

Ans. (a) kinetic theory of matter



Q: One liter of ideal gas at 27? is heated at a constant pressure to 297?. Then, the final volume is approximately

O: (a) 1.2 L

(b) 1.2 L

(c) 19 L

(d) 2.4 L

Ans. (b) 1.2 L



Q: Temperature remaining constant, the pressure of gas is decreased by 20%. The percentage change in volume

O: (a) increases by 20%

(b) decreases by 20%

(c) increases by 25%

(d) decreases by 25%

Ans. (c) increases by 25%



Q: At what temperature will be the oxygen molecules have the same root mean square speed as hydrogen molecules at 300 K ?

O: (a) 1600 K

(b) 4800 K

(c) 3200 K

(d) 2400 K

Ans. (b) 4800 K



Q: 10 mol of an ideal monoatomic gas at 10? is mixed with 20 mol of another monoatomic gas at 20 degree. Then, the temperature of the mixture is

O: (a) 16.6 degree

(b) 15 degree

(c) 16 degree

(d) 15.5 degree

Ans. (a) 16.6 degree


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Friday, 5 February 2016

Physics (part-3)

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Q: What would be the carrier and one of the side brands were suppressed in an AM wave modulated to a depth of 75%?

O: (a) 89.1%

(b) 9.1%

(c) 7.81%

(d) 100%

Ans. (a) 89.1%



Q: When a body moves with constant speed in a circular path, then

O: (a) work done will be zero.

(b) acceleration will be zero.

(c) no force acts on the body.

(d) its velocity remains constant.

Ans. (a) work done will be zero.



Q: The angle of banking is independent of

O: (a) speed of vehicle.

(b) radius of curvature of road.

(c) height of inclination.

(d) none of the above.

Ans. (d) none of the above.



Q: What determines the nature of the path followed by the particle?

O: (a) speed

(b) velocity

(c) acceleration

(d) both b and c

Ans. (d) both b and c



Q: A body is tried to one end of the string and whirled in a vertical circle, the physical quantity which remains constant is

O: (a) momentum

(b) speed

(c) kinetic energy

(d) total energy

Ans. (d) total energy



Q: A particle moves in a circle of radius 5cm with constant speed and time period 0.2π s. The acceleration of the particle is

O: (a) 25 m/s^2

(b) 36 m/s^2

(c) 5 m/s^2

(d) 15 m/ s^2

Ans. (c) 5 m/s^2



Q: A stone tied to one end of rope and rotated in a circular motion. If the string suddenly breaks, then the stone travels

O: (a) in perpendicular direction

(b) in direction of centrifugal force

(c) towards centripetal force

(d) in tangential direction

Ans. (d) in tangential direction



Q: If longitudinal strain for a wire is 0.03 and its Poisson’s ratio is 0.5, then its lateral strain is

O: (a) 0.003

(b) 0.0075

(c) 0.015

(d) 0.4

Ans. (c) 0.015



Q: When a wire is subjected to a force along its length, its length increases by 0.4% and its radius decreases by 0.2%. Then the Poisson’s ratio of the material of the wire is

O: (a) 0.8

(b) 0.5

(c) 0.2

(d) 0.3

Ans. (b) 0.5



Q: When a rod is heated but prevented from expanding, the stress developed is independent of

O: (a) length of rod

(b) rise in temperature

(c) material of the rod

(d) none of these

Ans. (a) length of rod


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Sunday, 24 January 2016

Computer

1:  Q.  What is full from of RAM?
A.  Random Access Memory
2:  Q.  What is full form of DVD?
A.  Digital Video Disc.
3:  Q.  What is full name of LAN?
A.  Local Area Network.
4:  Q.  What is full form of MAN?
A.  Metropoliton Area Network.
5:  Q.  What is full form of WAN?
A.  Wide Area Network.
6:  Q.  What is the full from of HDD?
A.  Hard Disk Drive.
7:  Q.  What is the full name of ID?
A.  Instruction Decoder.
8:  Q.  What is full name of GSM?
A.  Global System for Mobile Communication?
9:  Q.  What is full name of CDMA?
A.  Code Division Multiple Access.
10:  Q.  What is full form of SIM?
A.  Subscriber Identity Module.
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Wednesday, 13 January 2016

Physics (part-2)

Q: How much should the pressure be increased in order to decries that volume of gas by 5% at a constant temperature?
O: (a) 3.26%                        (b) 5.26%
(c) 6.26%                              (d) 4.26%
Ans. (b) 5.26%
Q: In Melde’s experiment, a string vibrates in 3 loops when 8g were placed in the pan. What mass must be placed in the pan to make the string vibrate in 5 loops?
O: (a) 2.88g                         (b) 3.88g
(c) 4.88g                               (c) 5.88g
Ans. (a) 2.88g
Q: Figure shows the distance-time graph of the motion of a car. It from the graph that the car is
O: (a) at rest                                       (b) in uniform motion
(c) In non-uniform motion          (d) uniformly accelerated
Ans. (d) uniformly accelerated
Q: The excess of pressure inside the first soap bubble is three times that of inside the  second bubble. The ratio of volume of the first to that of the second bubble is
O: (a) 1:3                                              (b) 1:9
(c) 1:27                                                 (d) 9:1
Ans. (c) 1:27
Q: A*B=B*A, then the angle between A and B is
O: (a) π                                                 (b) π/3
(c) π/2                                                   (d) π/4
Ans. (a) π
Q: Two equal vectors have a resultant equal to either of them, then the angle between them will be
O: (a) 120 degree                             (b) 110 degree
(c) 60 degree                                     (d) 150 degree
Ans. (a) 120 degree
Q: Two vectors are perpendicular, if
O: (a) A.B=1                        (b) A*B=0
(c) A.B=0                              (d) A*B=AB
Ans. (c) A.B=0
Q: A body of mass m is tied to one end of a spring and whirled round in a horizontal plane with a constant angular velocity. The elongation in the spring 1cm. If the angular velocity is doubled, the elongation in the string is 5cm. The original length of the spring is
O: (a) 16cm                                                         (b) 15cm
(c) 14cm                                                               (d) 13cm
Ans. (b) 15cm
Q: If a person can throw a stone to maximum height of h meter vertically, then the maximum distance through which it can be thrown horizontally by the same person is
O: (a) h/2                                                             (b) h
(c) 2h                                                                     (d) 3h
Ans. (c) 2h
Q: Force responsible for the circular motion of the body is
O: (a) centripetal force                 (b) centrifugal force
(c) gravitational force                    (d) None of these

Ans. (a) centripetal force
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Tuesday, 12 January 2016

Physics (part-1)

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Q:If the linear momentum of a body is increased by 50% then the kinetic energy of that body increases by


O: (a) 100% (b) 200%

(c) 225% (d) 25%

Ans. (b) 125%



Q: A body 2kg is thrown up vertically with kinetic energy of 490J. If g=9.8 ms-2, the height at which the kinetic energy of the body becomes half of the original value, is

O: (a) 50 m (b) 25m

(c) 12.5m (d) 19.6m

Ans. (c) 12.5m



Q: A rod of length L and mass m is kept vertically on the ground. Its potential energy is

O: (a) mgl (b) mgL/2

(c) mgL/3 (d) mgL/4

Ans. (b) mgL/2



Q: A bomb of 12kg explodes into two pieces of masses 4kg and 8kg mass is 6 ms-1. The kinetic energy of the other mass is

O: (a) 348J (b) 332 J

(c) 324J (d) 288J

Ans. (d) 288J



Q: If a sphere is rolling, then the ratio of its rotational kinetic energy to the total kinetic energy is

O: (a) 1:2 (b) 2:5

(c) 2:7 (d) 5:7

Ans. (c) 2:7



Q: A person, with outstretched arms, is spinning on a rotating stool. He suddenly brings his arms down to his sides. Which of the following is true about his kinetic energy K and angular momentum L?

O: (a) Both K and L increased. (b) Both K and L remain unchanged.

(c) K remains constant. (d) K increased but L remains constant.

Ans. (d) K increased but L remains constant.



Q: A gas is compressed adiabatically till its temperature is doubled. The ratio of its final volume will be

O: (a) 1/2 (b) more then 1/2

(c) less then 1/2 (d) between 1 and 2

Ans. (c) less then 1/2



Q: A resonance tube is resonated with tuning fork of frequency 256Hz. If the length of resonating air columns is 32cm and 100cm, then end correction will be

O: (a) 1cm (b) 2cm

(c) 4cm (d) 6cm

Ans. (b) 2cm



Q: An achromatic combination of lenses has the power of convex lens 2D and ratio of dispersive powers of lenses are equal then the focal length of concave lens is

O: (a) -50cm (b) 100cm

(c) 20cm (d) 200cm

Ans. (a) -50cm



Q: Half-life of a radioactive substance is 20 minute. The time between 20% and 80% decay will be

O: (a) 20 min (b) 30 min

(c) 40 min (d) 25 min

Ans. (c) 40 min


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Sunday, 4 January 2015

Biology. (part-2)


Q: Binomial nomenclature of plants was given by

O: (a) Prantl.

(b) Engler.

(c) Linnaeus.

(d) Both (a)and(b)

A: (c) Linnaeus.



Q: The concept of genus was proposed by

O: (a) Hooker.

(b) John Ray.

(c) Bessey.

(d) Tourne Fort.

A: (a) Hooker.



Q: Term ‘New Systematics’ was given by

O: (a) Julian Huxley.

(b) Darwin.

(c) Bateson.

(d) Linnaeus.

A: (a) Julian Huxley.



Q: ICBN stands for

O: (a) Indian code of Botanical Name.

(b) International Congress of Biological Name.

(c) International Code for Botanical Nomenclature.

(d) Indian Congress of Biological Name.

A: (c) International Code for Botanical Nomenclature.



Q: Which one of the following branch is applicable to both plants and animals?

O: (a) Saurology.

(b) Taxonomy.

(c) Herpetology.

(d) Ichthyology.

A: (b) Taxonomy.



Q: Binomial nomenclature means that every organism has

O: (a) One scientific name consisting of a generic and a specific epithet.

(b) One name given by tow scientists.

(c) Two names one scientific and other popular.

(d) Tow names, one Latinize and other of the person.

A: (a) One scientific name consisting of a generic and a specific epithet.



Q: The term ‘Species’ was coined by

O: (a) Linnaeus.

(b) Engler.

(c) Aristotle.

(d) John Ray.

A: (d) John Ray.



Q: Taxon is a/an

O: (a) Sub-division of Kingdom.

(b) Any rank in taxonomic hierarchy.

(c) Group of same species.

(d) Group of similar genera.

A: (b) Any rank in taxonomic hierarchy.



Q: Five Kingdom scheme to classify living beings was given by

O: (a) RH Whittaker.

(b) G G Simpson.

(c) E Mayr.

(d) J B S Haldane.

A: (a) R H Whittaker.



Q: Evolutionary history of an organism is known as

O: (a) Ancestry.

(b) Ontogey.

(c) Phylogeny.

(d) Palaeontology.

A: (C) Phylogeny.


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