Practical Chemistry

$\mathrm{K}_2\left[\mathrm{Hgl}_4\right]$ detects the following ion

An aqueous solution contains following ions: $\mathrm{Hg}_2^{2+}, \mathrm{Hg}^{2+}, \mathrm{Pb}^{2+}$ and $\mathrm{Cd}^{2+}$. On adding HCl , which of these will precipitate?

Brown ring is made for

The reagent $\mathrm{NH}_4 \mathrm{Cl}$ and aqueous $\mathrm{NH}_3$ will precipitate :

The correct match between item 'I' and item 'II' is Item I (Compound) Item II (Reagent) (1) Lysine (P) 1-naphthol (2) Furfural (Q) ninhydrin (3) Isopropyl alcohol (R) $KMnO_{4}$ (4) Vinyl benzene (Styrene) (S) Ceric…

The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen was passed in 100 mL of 0.1 M sulphuric acid. The excess of acid required 20 mL of 0.5 M sodium hydroxide solution…

Which among following salts shows decrease in solubility with increase in temperature?

Phenol gives characteristic colouration with

Brown ring test is used for the detection of which radical?

Which from following cations in their respective oxidation states develops colourless aqueous solution?

In the brown ring test, the brown colour of the ring is due to

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…