Which of the following can undergo a dispropo | vedclass

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(A) Aldehydes that do not possess an $\alpha$-hydrogen atom undergo a disproportionation reaction (self-oxidation and reduction) when heated with conc

Vedclass · Accepted Answer

$C_6H_5CHO$

Vedclass · Answer

(A) Aldehydes that do not possess an $\alpha$-hydrogen atom undergo a disproportionation reaction (self-oxidation and reduction) when heated with concentrated alkali. This reaction is known as the Cannizzaro reaction. Among the given options,benzaldehyde $(C_6H_5CHO)$ has no $\alpha$-hydrogen atom attached to the carbonyl carbon,and therefore,it undergoes the Cannizzaro reaction.

List-$I$	List-$II$
$(a)$ $NH_2OH$	$(i)$ Cyanohydrin
$(b)$ $R-NH_2$	(ii) Oxime
$(c)$ $R-OH$	(iii) Schiff base
$(d)$ $H-C\equiv N$	(iv) Acetal

Which of the following can undergo a disproportionation reaction on heating with concentrated alkali?

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List-$I$ List-$II$
$(a)$ $NH_2OH$ $(i)$ Cyanohydrin
$(b)$ $R-NH_2$ (ii) Oxime
$(c)$ $R-OH$ (iii) Schiff base
$(d)$ $H-C\equiv N$ (iv) Acetal

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