Class 7 Science Online Tests
Frictional Force MCQ (Multiple Choice Questions) PDF Download
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Frictional Force Questions and Answers PDF Download
The force of friction can be reduced by the help of
- ball bearing
- lubricants
- cushion surfaces
- all of them
A force which occurs when two surfaces come in contact and slows down motion while acting in
- opposite direction
- same direction
- same and opposite direction
- both a and b
Friction between moving parts of machine causes
- heat
- light
- energy
- oil
There will be a great distance in stopping a vehicle which is moving
- slowly
- steady
- fast
- continuously
In order to reduce air and water resistance, objects are shaped in
- streamline
- oblongata
- rectangular
- conical
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