Practical Chemistry

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

Brown ring is made for

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?

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

Consider following reactions: The sum of molecular masses of gas $A$ and $B$ is ____________ $u.$

In the Kjeldahl's method for estimation of nitrogen present in a soil sample, ammonia evolved from 0.75 g of sample neutralized 10 mL of $\text{1MH}_{2}\text{S}\text{O}_{4}.$ The percentage of nitrogen in the soil is…

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…

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

Phenol gives characteristic colouration with

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

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