MEDIUM
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Write the name for the materials like oil and grease which are applied on a surface to reduce friction.

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Important Questions on Force and Pressure

MEDIUM
Name two solid lubricants and state where they are used.
EASY
Why is it difficult to walk on a wet marble floor?
EASY
What is meant by lubrication? Why is it important?
MEDIUM
What are lubricants? List some of their uses.
MEDIUM
Why do we use lubricants in machines?
EASY
Lubricating the moving surfaces will _____.
EASY
Why are lubricants (oil or grease) applied to rubbing surfaces of machines?
EASY
What happens when oil is added to the car engine? How does it help the car to perform better?
EASY
Lubricants are used to increase friction.
EASY
Why do we sprinkle fine powder on carrom board?
EASY
A material which reduces the force of friction is called _____.
MEDIUM
How will you reduce friction between those machine parts which rub against each other? Give the simplest method.
EASY
Why does oiling the axles of a bicycle make the bicycle move more easily?
EASY
Which of the following should be used to reduce friction on a carrom board?
MEDIUM
Explain with the help of diagrams, how the use of oil reduces friction between two surfaces in contact with each other.
EASY
Name the following:

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