$CH_3-CO-CH_2-COOC_2H_5 \xrightarrow{NaOH, H_2O} A$. The product '$A$' in the reaction is

Describe the following:
$(i)$ Acetylation
$(ii)$ Cannizzaro reaction
$(iii)$ Cross aldol condensation
$(iv)$ Decarboxylation

$4-$methylbenzene sulphonic acid reacts with sodium acetate to give:

What are the products formed at the anode during Kolbe synthesis?

The final product $[D]$ of the reaction is
$CHCl_3$ $\xrightarrow[hv]{O_2} [A]$ $\xrightarrow{EtOH} [B]$ $\xrightarrow{2 \ mole \ MeMgBr} [C]$ $\xrightarrow{CaOCl_2} [D]$ $\xrightarrow{\Delta} CH_3-C(=O)-CH_3$

Ethanol on reaction with acetic anhydride gives