Embibe Experts Solutions for Chapter: Theoretical Principles of Experimental Chemistry, Exercise 1: BITSAT 2018

Which of the following compounds, on reaction with $\mathrm{NaOH}$ and ${\mathrm{Na}}_2{\mathrm{O}}_2$ gives yellow colour?

Sodium nitroprusside, when added to an alkaline solution of sulphide ions, produce a

When ${\mathrm{H}}_2\mathrm{S}$ gas is passed into a mixture of ${\mathrm{Mn}}^{2+}, {\mathrm{Ni}}^{2+}, {\mathrm{Cu}}^{2+}$ and ${\mathrm{Hg}}^{2+}$ ion in an acidified aqueous solution, the precipitates formed are