List of top Chemistry Questions on Organic Reactions asked in TS EAMCET

\(C_{2}H_{2} \xrightarrow[Hg^{2+}/H^{+},\,333K]{H_{2}O} A \xrightarrow{CH_{3}MgBr/H_{3}O^{+}} B \xrightarrow{Cu/573K} C\) A and C cannot be distinguished by using