General Science - Mock Test 20

Question 191

Highest percentage of air consists of?

A) Oxygen B) Carbon dioxide C) Nitrogen D) Argon

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Question 192

The shape of the airplane is like a?

A) Bird B) Car C) Dog D) All

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Question 193

Rolling friction is smaller than?

A) Sliding friction B) Static friction C) Fluid friction D) All of the above

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Question 194

Lubricants ________?

A) Increase friction B) Reduce friction C) Both a and b D) None

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Question 195

Friction is a /an_______?

A) Evil B) Foe C) Both a and b D) None

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Question 196

On what force of friction depends?

A) Smoothness of surface B) Roughness of surface C) Inclination of surface D) All of above

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Question 197

Fluid are____?

A) Gases B) Liquids C) Gases and liquids both D) None of these

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Question 198

What kind of substances are known as lubricants?

A) Increase friction B) Decrease friction C) Increase or decrease friction D) None of these

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Question 199

Friction is a __________?

A) Contact force B) Non-contact force C) Magnetic force D) None of these

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Question 200

Which one of these characteristics does a smooth surface has?

A) Less frictional force B) More frictional force C) Sometimes less and sometimes more force D) All of above

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