MCQ
$(A)$ will be


- A

- ✓

- C

- D








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$C(s) + {O_2}(g) \to C{O_2}(g),\Delta H = - 394\,kJ$
$2{H_2}(g) + {O_2}(g) \to 2{H_2}O(l),\,\Delta H = 568\,kJ$
$C{H_4}(g) + 2{O_2}(g)\,\, \to \,\,C{O_2}(g) + 2{H_2}O(l)$ $\Delta H = - 892\,kJ$ Heat of formation of $C{H_4}$ is.....$kJ$
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($1$) The product $S$ is
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($2$) The reactions, $Q$ to $R$ and $R$ to $S$, are
$[A]$ Dehydration and Friedel-Crafts acylation
$[B]$ Aromatic sulfonation and Friedel-Crafts acylation
$[C]$ Friedel-Crafts alkylation, dehydration and Friedel-Crafts acylation
$[D]$ Friedel-Crafts alkylation and Friedel-Crafts acylation
Given the answer quetion ($1$) and ($2$)