GENERAL SCIENCE PHYSICS ONE LINERS FOR TNPSC UPSC SSC SET 083
821). Who invented ultra violet rays?
A). Hershal
B). Curie
C). Ritter
D). Roentgen
Answer: Hershal
822). Consider the following statements :
Assertion (A) : Glass when heated cracks while metal does not
A). Hershal
B). Curie
C). Ritter
D). Roentgen
Answer: Hershal
822). Consider the following statements :
Assertion (A) : Glass when heated cracks while metal does not
Reason (R) : Metal
is a good conductor & glass is a bad conductor.
Now select your
answer according to the coding scheme given below :
A). Both (A) and (R) are true, and (R) is the correct explanation of (A)
B). Both (A) and (R) are true, but (R) is not the correct explanation of (A)
C). (A) is true, but (R) is false
D). (A) is-false, but (R) is true
Answer: Both (A) and (R) are true, and (R) is the correct explanation of (A)
823). The surface water in a lake is just going to freeze. What is the temperature at the bottom?
A). 0° C
B). less than 0° C
C). 4° C
D). -4° C
Answer: 4° C
824). Velocity of sound in air at a given temperature
A). increases with increase in pressure
B). decreases with increase in pressure
C). is independent of pressure
D). none of these
Answer: is independent of pressure
825). Decibel is the unit
A). heat intensity
B). light intensity
C). sound intensity
D). electric intensity
Answer: sound intensity
826). The heater element in an electric iron box made of
A). nichrome
B). iron
C). tungsten
D). copper
Answer: nichrome
827). The device employed to convert electrical energy into mechanical energy is
A). dynamo
B). motor
C). voltmeter
D). galvanometer
Answer: motor
828). When a ship enters a sea from a river
A). it rises a little
B). it sinks a little
C). it remains at the same level
D). it rises or sinks depending on the material made of
Answer: it rises a little
829). The unit of momentum of force is
A). joule
B). watt
C). metre
D). newton metre
Answer: newton metre
830). The single force which effectively replaces two or more forces acting on a body is known as
A). resultant force
B). couple
C). moment of a force
D). applied force
Answer: resultant force
A). Both (A) and (R) are true, and (R) is the correct explanation of (A)
B). Both (A) and (R) are true, but (R) is not the correct explanation of (A)
C). (A) is true, but (R) is false
D). (A) is-false, but (R) is true
Answer: Both (A) and (R) are true, and (R) is the correct explanation of (A)
823). The surface water in a lake is just going to freeze. What is the temperature at the bottom?
A). 0° C
B). less than 0° C
C). 4° C
D). -4° C
Answer: 4° C
824). Velocity of sound in air at a given temperature
A). increases with increase in pressure
B). decreases with increase in pressure
C). is independent of pressure
D). none of these
Answer: is independent of pressure
825). Decibel is the unit
A). heat intensity
B). light intensity
C). sound intensity
D). electric intensity
Answer: sound intensity
826). The heater element in an electric iron box made of
A). nichrome
B). iron
C). tungsten
D). copper
Answer: nichrome
827). The device employed to convert electrical energy into mechanical energy is
A). dynamo
B). motor
C). voltmeter
D). galvanometer
Answer: motor
828). When a ship enters a sea from a river
A). it rises a little
B). it sinks a little
C). it remains at the same level
D). it rises or sinks depending on the material made of
Answer: it rises a little
829). The unit of momentum of force is
A). joule
B). watt
C). metre
D). newton metre
Answer: newton metre
830). The single force which effectively replaces two or more forces acting on a body is known as
A). resultant force
B). couple
C). moment of a force
D). applied force
Answer: resultant force
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