A) \[100\,kcal\]
B) \[200\,kcal\]
C) \[300\,kcal\]
D) \[400\,kcal\]
Correct Answer: B
Solution :
\[C{{H}_{4}}+2{{O}_{2}}\to C{{O}_{2}}+2{{H}_{2}}O\] Molecular weight of \[C{{H}_{4}}=12+4=16\] \[\therefore \]On the combustion of 2.0gm of methane = 25.0 kcal \[\therefore \]On the combustion of \[16.0gm=\frac{25\times 16}{2}=200\,kcal.\]
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