Salt Analysis

When salt BA is treated with Conc. $\text{H}_2\text{SO}_4$ reddish brown gas is liberated. The aqueous solution of BA gives pale yellow precipitate with $\text{AgNO}_3$ solution. Which of the following anion ($\text{A}^-$) is present in the...

The sodium fusion extract is boiled with concentrated nitric acid while testing for halogens. By doing so, it

The group reagent $\mathrm{NH}_4 \mathrm{Cl}(\mathrm{s})$ and aqueous $\mathrm{NH}_3$ will precipitate which of the following ion?

In the analysis of III group basic radicals of salts, the purpose of adding $\mathrm{NH}_4 \mathrm{Cl}(s)$ to $\mathrm{NH}_4 \mathrm{OH}$ is