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Q:

The sliding friction is _______________ than the static friction.

A) double B) same
C) greater D) smaller
 
Answer & Explanation Answer: D) smaller

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Q:

___________ states that internal energy is a function of state and the increase in internal energy is equal to the sum of the heat supplied to system and work done by the system.

A) First law of thermodynamics B) Hooke's Law
C) The coulomb's law D) Faraday's Law
 
Answer & Explanation Answer: A) First law of thermodynamics

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Q:

If ice floating on water in a vessel melts, the water level in the vessel _______.

A) increases B) does not change
C) first increases before decreasing D) decreases
 
Answer & Explanation Answer: B) does not change

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Q:

The molecular mass of a gas is ________

A) twice its vapour pressure B) equal to its vapour pressure
C) half its vapour pressure D) not related to its vapour pressure
 
Answer & Explanation Answer: A) twice its vapour pressure

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Q:

Sound can not travel in which of the following medium?

A) Solid B) Liquid
C) Gas D) Vacuum
 
Answer & Explanation Answer: D) Vacuum

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Q:

Which one among the following components is used as an amplifying device?

A) Transformer B) Diode
C) Capacitor D) Transistor
 
Answer & Explanation Answer: D) Transistor

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Q:

Which of the following pairing is incorrect

A) Hygrometer ­- Water vapour content of the atmosphere B) Lactometer - ­ Specific gravity of liquids
C) Anemometer ­ - Speed of the wind D) Seismograph -­ Earthquakes
 
Answer & Explanation Answer: B) Lactometer - ­ Specific gravity of liquids

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Q:

What is the viscosity of an ideal fluid?

A) Equal to its mass B) Equal to its weight
C) Zero D) One
 
Answer & Explanation Answer: C) Zero

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