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Physics

Physics
Friction is caused by the ________ on the two surfaces in contact.

Gaps
Densities
Smoothness
Irregularities

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Physics
Magnetic keepers are used to protect magnets from :

Effect of other magnets
Demagnetization due to heating
Earth's magnetic field
Self-demagnetization

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Physics
In nuclear reactor, heavy water is used as

Moderator
Fuel
Atomic smasher
Coolant

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Physics
Liquids and gases never show

Paramagnetic property
Ferromagnetic property
Diamagnetic property
Electromagnetic property

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Physics
Solids which conduct electricity at higher temperature but not at lower temperature are called

Insulator
Super-conductor
Metallic-conductor
Semi-conductor

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Physics
Fog is an example of

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

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