In the combustion of 4 g of methane, 2.5 kcal of heat is liberated. The heat of combustion of methane is

10 kcal

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2.5 kcal

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25 kcal

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100 kcal

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Solution

The correct option is A 10 kcal
$4 g o f C H_{4} l i b e r a t e s = 2.5 k c a l o f h e a t$
$∴ 16 g l i b e r a t e s = 10 k c a l o f h e a t$

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