\[
\mathrm{CH}_{3} \mathrm{CN} \stackrel{\mathrm{Na} / \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}...
\[
\mathrm{CH}_{3} \mathrm{CN} \stackrel{\mathrm{Na} / \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}}{\longrightarrow}(A) \stackrel{\mathrm{HNO}_{2}}{\longrightarrow}(B)
\]
इस अभिक्रिया क्रम में उत्पाद \( (B) \) क्या है?
(A) \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2} \)
(B) \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NO}_{2} \)
(C) \( \mathrm{CH}_{3} \mathrm{CONH}_{2} \)
(D) \( \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH} \)
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