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Physics

Physics
The atmospheric air is held to the Earth by :

Rotation of the Earth
Winds
Gravity
Clouds

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Physics
Thermal expansion of materials arises from

Asymmetry of potential energy curve
Weak bonds
Thermal vibrations
Strong bonds

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Physics
What is the effective resistance (in Ω) of two resistors 20 Ω and 30 Ω connected in parallel?

36
12
50
24

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Physics
Energy that is produced commercially from coal is called

Kinetic energy
Thermal energy
Light energy
Potential energy

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Physics
The term ''Isoneph' indicates the lines of equal

Cloudiness
Rainfall
Salinity
Pressure

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Physics
Vegetables are cooked in lesser time by adding a pinch of salt while cooking because

Boiling point of water increases
Latent heat of vaporization of water decreases
Boiling point of water decreases
Latent heat of vaporization of water increases

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