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Factors Affecting Boiling Point

Water boils a...

Question

Water boils at $120^{o} C$ in a presure cooker. Explain the reason.

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Solution

The boiling point of a liquid increases with an increase in pressure and vice-versa. In a pressure cooker, steam is not allowed to escape out. The vapour pressure on water inside becomes nearly 1.75 times the atmospheric pressure, so water boils at about $120^{o} C$ .

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Factors Affecting Boiling Point

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