`N_2` gas is liberated when `(HCl+NaNO_2)` react with the following compounds.
(I) `CH_3CH_2NH_2`
(II) Urea
(III) `CH_3CONH_2`
(IV) `C_2H_6CH_2NH_2`

Options

A. I,III and IV
B. II,III and IV
C. I,II,III and IV
D. I, II and IV

Answer

C

Explanation

(I) `underset(cthylami n e)(CH_3CH_2NH_2)overset(NaNO_2+HCl)toCH_3CH_2OH+N_2+N_2O+NaCl`
(II) `NH_2CONH_2underset(2)overset((NaNO_2)/(HCl))to2N_2+2H_2O+CO_2+NaCl`
(III) `CH_2CONH_2overset(NaNO_2+HCl)toCH_3COOH+N_2+N_2+H_2O+NaCl`
(IV) `C_6H_5CH_2NH_2overset(NaNO+HCl)toC_6H_5CH_2OH+H_2O+NaCl+N_2`