In the reaction given below `H-C -= C - H + H - C -= C - H underset(NH_4Cl)overset(Cu_2Cl)(rarr)(x)`, 'X' will be

In the given reaction: C_(6) H_(5) - overset(O)overset(||)(C )-H overset(NH_(2) OH//H^(e ))(rarr) [x], [x] will be ,

In the given reaction [X] will be : C_(6)H_(5)-underset(O)underset(||)C-Hoverset(NH_(2)OH//H^(o+))rarr [X]

In the given reaction [X] will be : C_(6)H_(5)-underset(O)underset(||)C-Hoverset(NH_(2)OH//H^(o+))rarr [X]

In the given reaction C_6H_5-overset(O)overset(||)C-CH_3overset((i)C_2H_8MgBr)underset((ii)H_2"O"//H^+)rarr(X) X will be

In the given reaction C_6H_5-overset(O)overset(||)C-CH_3overset((i)C_2H_8MgBr)underset((ii)H_2"O"//H^+)rarr(X) X will be

In the given reaction C_6 H_5 CHO + X underset((ii) HOH//NH_4 Cl)overset((i)Zn)to C_6 H_5 -overset(OH)overset(|)CH-CH_2-COOC_2 H_5. [X] will be

In the reaction of C_6H_5Cl overset(NH_3)underset(X) rarrC_6H_5NH_2 , X is