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How does the latent heat of condensation is included in gross calorific value?

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How does the latent heat of condensation is included in gross calorific value?

(a) By the steam produced by the combustion of hydrogen

(b) By the combustion of products other than carbon and hydrogen

(c) By the combustion of carbon

(d) By the total heat produced in the system

This question was addressed to me by my college director while I was bunking the class.

This interesting question is from Calorific Value in division Fuels and Combustion of Engineering Chemistry II

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The correct option is (a) By the steam produced by the combustion of hydrogen

Easiest explanation: The steam generated after combustion gets condensed into water and latent heat is evolved. The latent heat so liberated is included in gross calorific value.

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