Boiling point is the temperature at which the vapor pressure becomes equal to atmospheric pressure. If true enter 1 else 0.
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Solution

The correct option is A 1
Boiling point is the temperature at which the vapor pressure becomes equal to atmospheric pressure. It is a characteristic property of liquids and is a criterion to check the purity of liquid. As the external pressure increases, the boiling point increases. High boiling liquids have greater intermolecular forces.

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1 a t m

273 K

The water boils when :

1.Saturated vapour pressure of water becomes equal to atmospheric pressure

2. Boiling point of water becomes more than atmospheric pressure

3. Saturated vapour pressure of water is less than atmospheric pressure

4. Vapour pressure of water becomes more than atmospheric pressure

The temperature at which pressure of molecules becomes equal to the atmospheric pressure is called

Δ T_{b} = 1.04 K

[K_{b} = 0.52 K k g m o l - 1]

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