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Question

Food cooks faster in a pressure cooker since

A
the pressure exerted by water vapour enclosed in the cooker increases the boiling point of water.
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B
the pressure exerted by water vapour enclosed in the cooker decreases the boiling point of water.
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C
the water vapour pressure does not influence the boiling point of the water.
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D
there is no loss of heat to the surrounding as the pressure cooker is airtight.
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Solution

The correct option is A the pressure exerted by water vapour enclosed in the cooker increases the boiling point of water.
Food cooks faster in a pressure cooker since, the pressure exerted by water vapor enclosed in the cooker increases the boiling point of water.
pressure α boiling point
Pressure increases, boiling point increases. So food cooks faster.

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