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

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

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Physics
For an ideal gas, which one of the following statements does not hold true?

There is no interactive force between the molecules.
The potential energy of the gas molecules is zero
The kinetic energies of all gas molecules are not same
The speed of all gas molecules is same

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