Question

The salt used for performing bead test in inorganic qualitative analysis is:

• A. $Na\left(N{H}_4\right)HP{O}_4.4H_{2}O$
• B. $K_{2}S{O}_{4}A{l}_2{\left(S{O}_4\right)}_3.24H_{2}O$
• C. $FeS{O}_4{\left(N{H}_4\right)}_{2}S{O}_4.6H_{2}O$
• D. $CuS{O}_4.2H_{2}O$

Answer 1

The correct option is A $Na\left(N{H}_4\right)HP{O}_4.4H_{2}O$

Microcosmic salt, $Na\left(N{H}_4\right)HP{O}_4\cdot 4H_{2}O$ is used for performing bead test in inorganic qualitative analysis for the detection of coloured ions.