1.

R-CH=CH-CHO+NH_(2)-overset(O)overset("||")C-NHNH_(2)overset(H^(+))to X (X) in the above reaction is

Answer»

`R-CH=CH-overset(OH)overset(|)(CH)-NH_(2)CONHNH_(2)`
`R-CH=CH-CH=N-NH-overset(O)overset("||")C-NH_(2)`
`R-CH=NH_(2)CONH_(2)`
`R-CH=CH-UNDERSET(OH)underset(|)(CH)-NH_(2)COCH=NHNH_(2)`

Answer :B


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