EASY
Earn 100

Applying lubricants to surfaces of machines reduce the friction between them.

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Important Questions on Friction

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Science>Physics>Friction>Increasing and Reducing Friction
A material which reduces the force of friction is called _____.
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Science>Physics>Friction>Increasing and Reducing Friction
Why does oiling the axles of a bicycle make the bicycle move more easily?
MEDIUM
Science>Physics>Friction>Increasing and Reducing Friction
How will you reduce friction between those machine parts which rub against each other? Give the simplest method.
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Science>Physics>Friction>Increasing and Reducing Friction
What happens when oil is added to the car engine? How does it help the car to perform better?
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Science>Physics>Friction>Increasing and Reducing Friction
Lubricating the moving surfaces will _____.
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Science>Physics>Friction>Increasing and Reducing Friction
Why do we sprinkle fine powder on carrom board?
MEDIUM
Science>Physics>Friction>Increasing and Reducing Friction
What is a lubricant ?
EASY
Science>Physics>Friction>Increasing and Reducing Friction
Cotyledons are also called-
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Science>Physics>Friction>Increasing and Reducing Friction
Why is it difficult to walk on a wet marble floor?
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Science>Physics>Friction>Increasing and Reducing Friction
What is meant by lubrication? Why is it important?
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Science>Physics>Friction>Increasing and Reducing Friction
Name the following:

A non-sticky material used to reduce friction. (Sandpaper/Lubricant)

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Science>Physics>Friction>Increasing and Reducing Friction
Why do we use lubricants in machines?
MEDIUM
Science>Physics>Friction>Increasing and Reducing Friction
Explain with the help of diagrams, how the use of oil reduces friction between two surfaces in contact with each other.
MEDIUM
Science>Physics>Friction>Increasing and Reducing Friction
What are lubricants? List some of their uses.
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Science>Physics>Friction>Increasing and Reducing Friction
Which of the following should be used to reduce friction on a carrom board?
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Science>Physics>Friction>Increasing and Reducing Friction
Name two common lubricants.
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Science>Physics>Friction>Increasing and Reducing Friction

(a) Name two magnetic poles which attract each other.

(b) Name two magnetic poles which repel each other.

MEDIUM
Science>Physics>Friction>Increasing and Reducing Friction
Why are machine parts oiled?
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Science>Physics>Friction>Increasing and Reducing Friction
Why are lubricants (oil or grease) applied to rubbing surfaces of machines?
EASY
Science>Physics>Friction>Increasing and Reducing Friction
Lubricants are used to increase friction.