true or false. [1 M]

Question 11 Mark

Friction do not produce heat.

Answer

False

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Question 21 Mark

Friction can never be eliminated.

Answer

True

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Question 31 Mark

Friction can be reduced by using ball bearings in some machines.

Answer

True

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Question 41 Mark

A spring balance measures force.

Answer

True

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Question 51 Mark

Friction is independent of the nature of surfaces in contact.

Answer

False

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Question 61 Mark

Friction can be reduced by using lubricants.

Answer

True

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Question 71 Mark

It is easier to move a heavy object than a light object.

Answer

False

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Question 81 Mark

Friction decreases with increase in the smoothness of the surface.

Answer

True

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Question 91 Mark

Sliding friction is less than rolling friction.

Answer

False

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Question 101 Mark

Friction is dependent on area of contact.

Answer

False

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Question 111 Mark

Friction always works in opposite direction to the relative motion.

Answer

True

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Question 121 Mark

A soapy floor is slippery due to increased friction.

Answer

False

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Question 131 Mark

Friction is less for smooth surfaces.

Answer

True

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Question 141 Mark

Fluids are only liquids.

Answer

False

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Question 151 Mark

Friction is always useful to us.

Answer

False

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Science true or false. [1 M]

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