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Question

What is the effect of increasing pressure on the latent heat of steam?

बढ़ते दबाव का भाप की गुप्त ऊष्मा पर क्या प्रभाव पड़ता है?

A.

Decreases

B.

Increases

C.

remains same

D.

Behaves unpredictably

Answer ( Option A)

Decreases

Solution

The heat energy needed by water at higher pressure to change it into steam is actually less than the heat energy required at atmospheric pressure. That’s why latent heat of steam decreases on increasing the pressure

Hence, the correct option is (A). 

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