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PHYSICS

Physics
Surface tension in a liquid is due to :

Electrical force between molecules.
Gravitational force between molecules
Cohesive force between molecules
Adhesive force betweenmolecules

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Physics
A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will

Decrease
Increase
First decrease and then increase
Remains the same

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Physics
The oil in the wick of an oil lamp rises up due to:

Capillary action
Low viscosity of oil
Gravitational force
Pressure difference

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Physics
Fog is an example of

Liquid dispersed in gas
Solid dispersed in liquid
Solid dispersed in gas
Gas dispersed in gas

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Physics
If the diameter of a capillary is doubled, then the rise of water in it will be

Half
No change
Two times
Four times

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