MCQ
When benzoic acid is treated with $PC{l_5}$ at $100\,^o C$, it gives
- ✓Benzoyl chloride
- B$o-$ chlorobenzoic acid
- C$p-$ chlorobenzoic acid
- DBenzyl chloride
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$C (diamond) + O_2 \rightarrow CO_2(g)\ ;\Delta H =\ -97.6\ kcal$
$C (graphite) + O_2 \rightarrow CO_2(g)\ ;\Delta H =\ -94.3\ kcal$
The heat change for the conversion of $1\ g$ of $C (diamond) \rightarrow C (graphite)$ is
