The heat of combustion of \[C{{H}_{4(g)}},\,{{C}_{(\text{graphite})}}\] and \[{{H}_{2(g)}}\] are \[20\,kcal,\,-40\,kcal\] and \[-10\,kcal\] respectively. The heat of formation of methane is [EAMCET 1998]

The heat of combustion of \[C{{H}_{4(g)}},\,{{C}_{(\text{graphite})}}\

1.	The heat of combustion of \[C{{H}_{4(g)}},\,{{C}_{(\text{graphite})}}\] and \[{{H}_{2(g)}}\] are \[20\,kcal,\,-40\,kcal\] and \[-10\,kcal\] respectively. The heat of formation of methane is [EAMCET 1998]
A.	\[-4.0\,kcal\]
B.	\[+40\,kcal\]
C.	\[-80\,kcal\]
D.	\[+80\,kcal\]
Answer» D. \[+80\,kcal\]

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The heat of combustion of \[C{{H}_{4(g)}},\,{{C}_{(\text{graphite})}}\] and \[{{H}_{2(g)}}\] are \[20\,kcal,\,-40\,kcal\] and \[-10\,kcal\] respectively. The heat of formation of methane is [EAMCET 1998]

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