General Science - Comprehensive Mock Test 8

Question 71 Easy

Highest percentage of air consists of?

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

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Question 72 Easy

The shape of the airplane is like a?

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

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Question 73 Easy

Rolling friction is smaller than?

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

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Question 74 Easy

Lubricants ________?

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

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Question 75 Easy

Friction is a /an_______?

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

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Question 76 Easy

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 77 Easy

Fluid are____?

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

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Question 78 Easy

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 79 Easy

Friction is a __________?

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

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Question 80 Medium

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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