Tests for Zinc(II) Ion

What happens when we mix ${\mathrm{ZnCl}}_2$ with ${\mathrm{K}}_4\left[\mathrm{Fe}(\mathrm{CN}{)}_6\right]$?

What would be the observations when aqueous ammonia is added to a solution of zinc nitrate (until in excess) and heated?

Which of the following are produced when ${\mathrm{Z}\mathrm{n}\mathrm{C}\mathrm{l}}_2$ reacts with excess of ammonia solution?

Sodium hydroxide solution can be used to identify zinc ions.

Name the metal which reacts with sodium hydroxide solution, liberating hydrogen gas.

A white gelatinous precipitate is formed when this compound reacts with sodium hydroxide.

Which of the following sulphide would dissolve in hot and concentrated nitric acid?

A white gelatinous precipitate is formed when this compound reacts with sodium hydroxide.

How many of the following cations belong to group IV, with regards to qualitative inorganic analysis?

${\mathrm{Co}}^{2+},{\mathrm{Mg}}^{2+},{\mathrm{Ni}}^{2+},{\mathrm{Zn}}^{2+},{\mathrm{Sr}}^{2+},{\mathrm{Ca}}^{2+},{\mathrm{Mn}}^{2+},{\mathrm{Pb}}^{2+},{\mathrm{Al}}^{3+}$

Cotyledons are also called-

When $H_{2}S$ gas is passed into a certain solution, it reacts to form a white precipitate. The solution referred to contains ions of

Reagent used in the qualitative analysis of IVth group is

${\mathrm{Z}\mathrm{n}\mathrm{C}\mathrm{l}}_2$ reacts with excess of ${\mathrm{N}\mathrm{H}}_3$ solution to produce which of the folloing?

Zinc on reaction with NaOH gives a salt  A along with a gas X and A on reaction with a gas Y gives  white precipitate W. Which of the following is correct ?

A metal carbonate on being heated strongly gives a solid that forms a green solid with CoO (cobalt oxide). In which analytical group will the cation be precipitated and what will be the colour of the precipitate.

Which of the following mixtures can be separated by using NH₃ solution?