Q. China wares are wrapped in straw paper before packing this is the application of concept of
(A)
Impulse
(B)
Momentum
(C)
Acceleration
(D)
Force
✅ Correct Answer: (A)
Impulse
Q. To convert Ac to DC
(A)
Inverter
(B)
Alternater
(C)
Rectifier
(D)
Starter moter
✅ Correct Answer: (C)
Rectifier
Q. Mica is used in an electric iron because it is a
(A)
Good conductor of heat
(B)
Bad conductor of heat
(C)
Good conductor of electricity
(D)
Bad conductor of electricity
✅ Correct Answer: (D)
Bad conductor of electricity
Q. Tube light is filled with
(A)
Mercuric oxide and argon gas
(B)
Sodium vapour
(C)
Mercury vapour a low pressure
(D)
Argon gas at a low pressure
✅ Correct Answer: (A)
Mercuric oxide and argon gas
Q. Recently developed technique for monitoring foetal growth is
(A)
Ultrasonic
(B)
Ultra–violet rays
(C)
Microwave technique
(D)
X–rays
✅ Correct Answer: (A)
Ultrasonic
Q. A man presses more weight on earth at :
(A)
Sitting position
(B)
Standing Position
(C)
Lying Position
(D)
None of these
✅ Correct Answer: (B)
Standing Position
Q. A piece of ice is dropped in a vesel containing kerosene. When ice melts, the level of kerosene will
(A)
Rise
(B)
Fall
(C)
Remain Same
(D)
None of these
✅ Correct Answer: (B)
Fall
Q. Young's modulus is the property of
(A)
Gas only
(B)
Both Solid and Liquid
(C)
Liquid only
(D)
Solid only
✅ Correct Answer: (D)
Solid only
Q. An artificial Satellite revolves round the Earth in circular orbit, which quantity remains constant?
(A)
Angular Momentum
(B)
Linear Velocity
(C)
Angular Displacement
(D)
None of these
✅ Correct Answer: (A)
Angular Momentum
Q. If electrical conductivity increases with the increase of temperature of a substance, then it is a:
(A)
Conductor
(B)
Semiconductor
(C)
Insulator
(D)
Carborator
✅ Correct Answer: (B)
Semiconductor
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