Hydrolysis of $$C{H_3}C{H_2}N{O_2}$$    with $$85\% \,{H_2}S{O_4}$$   gives

Solution :
$${1^ \circ }$$ Nitroalkanes on hydrolysis with boiling $$85\% \,{H_2}S{O_4}$$   give acids.
\[C{{H}_{3}}C{{H}_{2}}N{{O}_{2}}+{{H}_{2}}O+{{H}_{2}}S{{O}_{4}}\xrightarrow{\text{heat}}C{{H}_{3}}COOH+{{\left[ N{{H}_{3}}OH \right]}^{+}}HSO_{4}^{-}\]