And are separated by :

CHEMISTRY · Single correct · ICSE · Chemistry · Elements, Compounds and Mixtures · Elements, Compounds and Mixtures

Problem

\text{Na}_2\text{CrO}_4

and

\text{Fe}_2\text{O}_3

are separated by : (1) dissolving in conc.

\text{H}_2\text{SO}_4

(2) dissolving in

\text{NH}_3

(3) dissolving in

\text{H}_2\text{O}

(4) dissolving in dil.

\text{HCl}