GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 124
1231).
Two trains travelling in opposite direction cross each other in 20
secs. If the length of both the trains are 300 m each and the speed of
one of them is 50 kmph, what would be the speed of the other train?
A). 27 kmph
B). 72 kmph
C). 58 kmph
D). 50 kmph
Answer: 58 kmph
1232). Movement of a substance against a concentration gradient is called
A). passive transport
B). active transport
C). diffusion
D). osmosis
Answer: active transport
1233). When the speed of a body is doubled, its kinetic energy becomes
A). doubled
B). half
C). quadruple
D). one-fourth
Answer: quadruple
1234). When a body moves with uniform velocity its acceleration is
A). doubled
B). tripled
C). zero
D). maximum
Answer: zero
1235). The principle of Dynamo was discovered by
A). Sir Humphry Davy
B). Michael Farady
C). Albert Einstein
D). Max Planck
Answer: Michael Farady
1236). The electric fittings are earthed so that
A). electricity may not leak
B). there may be a smooth flow of electricity
C). current may pass to the earth in case of a short circuit, without causing any harm
D). to prevent short circuit
Answer: current may pass to the earth in case of a short circuit, without causing any harm
1237). When common salt is mixed with ice, the melting point
A). is lowered
B). is raised
C). remains the same
D). is first lowered and then raised
Answer: is lowered
1238). The weight of iron is more after rusting, because
A). it has expanded into a greater volume
B). rust contains twice as many iron atoms
C). of the additional oxygen it contains
D). iron undergoes reduction
Answer: iron undergoes reduction
1239). A galvanometer can be converted into ammeter by connecting
A). low resistance in parallel
B). low resistance in series
C). high resistance in parallel
D). high resistance in series
Answer: low resistance in parallel
1240). If c is the velocity of light and r is the frequency of the photon, the momentum associated With . the photon is
A). hγc
B). hγ/c
C). γ/c
D). ηχ/γ
Answer: hγ/c
A). 27 kmph
B). 72 kmph
C). 58 kmph
D). 50 kmph
Answer: 58 kmph
1232). Movement of a substance against a concentration gradient is called
A). passive transport
B). active transport
C). diffusion
D). osmosis
Answer: active transport
1233). When the speed of a body is doubled, its kinetic energy becomes
A). doubled
B). half
C). quadruple
D). one-fourth
Answer: quadruple
1234). When a body moves with uniform velocity its acceleration is
A). doubled
B). tripled
C). zero
D). maximum
Answer: zero
1235). The principle of Dynamo was discovered by
A). Sir Humphry Davy
B). Michael Farady
C). Albert Einstein
D). Max Planck
Answer: Michael Farady
1236). The electric fittings are earthed so that
A). electricity may not leak
B). there may be a smooth flow of electricity
C). current may pass to the earth in case of a short circuit, without causing any harm
D). to prevent short circuit
Answer: current may pass to the earth in case of a short circuit, without causing any harm
1237). When common salt is mixed with ice, the melting point
A). is lowered
B). is raised
C). remains the same
D). is first lowered and then raised
Answer: is lowered
1238). The weight of iron is more after rusting, because
A). it has expanded into a greater volume
B). rust contains twice as many iron atoms
C). of the additional oxygen it contains
D). iron undergoes reduction
Answer: iron undergoes reduction
1239). A galvanometer can be converted into ammeter by connecting
A). low resistance in parallel
B). low resistance in series
C). high resistance in parallel
D). high resistance in series
Answer: low resistance in parallel
1240). If c is the velocity of light and r is the frequency of the photon, the momentum associated With . the photon is
A). hγc
B). hγ/c
C). γ/c
D). ηχ/γ
Answer: hγ/c
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