NEET Practice Questions (MCQs) with Answers & Solutions

Hydrolysis of alkyl isocyanide yields

Reaction of $\mathrm{R}-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-{\mathrm{NH}}_2$ with a mixture of Br₂ and KOH gives R-NH₂ as the main product. The intermediates involved in this reaction are: 

Which of the following alkene cannot be prepared by de-amination of n-Bu-NH₂ with NaNO₂/HCl ?

Deamination (or) diazotization of n-Bu-NH2 with NaNO₂/HCl gives ......... isomeric butene.

Lassaigne's test for the detection of nitrogen will fail in the case of :

Identify the product (A)  in following reaction series,

CH₃CN $\stackrel{\mathrm{Na}/{\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}}{\to }$(X) $\stackrel{{\mathrm{HNO}}_2}{\to }$(Y) $\stackrel{\left[\mathrm{O}\right]}{\to }$(Z) $\stackrel{\mathrm{Tollens} \mathrm{reagent}}{\to }$(A):

The product C of the reaction,

     CH₃CN$\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }$A$\stackrel{{\mathrm{NH}}_3}{\to }$B$\stackrel{∆}{\to }$C is:

Gabriels phthalimide reaction is used to prepare:

Gas evolved during the reacton of sodium metal on ethyl-amine is:

Ethylamine undergoes oxidation in the presence of KMnO₄ followed by hydrolysis to form: