Tests for Carbonate Ion

The _____ gas is released when hydrochloric acid is added to the test compound. It indicates the presence of carbonate ions.

The confirmatory test for the presence of carbonate ions is, if the gas evolved turns _____ milky. 

A salt on treatment with dilute sulphuric acid produces a gas which turns lime-water milky but has no effect on acidified potassium dichromate solution. The anion present in the salt is:

When we add dilute sulphuric acid to salt, brisk effervescence is observed then the possible anion is carbonate.

${\mathrm{CaCO}}_3\underset{\mathrm{Acetic} \mathrm{acid}}{\overset{\mathrm{AcOH}}{\to }} \mathrm{A}\left(\mathrm{g}\right) +\mathrm{B} \stackrel{{\mathrm{Na}}_2{\mathrm{C}}_2{\mathrm{O}}_4\mathrm{Solution}}{\to } \mathrm{C} + \mathrm{D}$

The observation(s) which will be seen while performing these reactions in a laboratory is/are

Cotyledons are also called-

Consider the following statements and arrange in the order of true/false for the given statements respectively.

$S_1:$ Like $C{O}_3^{2-},S{O}_3^{2-}$ ions also give test with baryta water, $\mathrm{\text{Ba}}{(OH)}_2.$

$S_2:A{g}_{2}S$ is insoluble in hot and concentrated $\mathrm{\text{HN}}{O}_3.$

$S_3:$ Triodide ions $(I_3^{-})$ produced by the reaction of $C{u}^{2+}$ and KI solution are not reduced by excess of sodium thiosulphate solution.

$S_4:$ Black precipitate of $\mathrm{\text{Cu}}{(SCN)}_2$ turns into white precipitate when it reacts with saturated solution of $S{O}_2$ in water.

To an acid solution of an anion a few drops of KMnO₄ solution are added. Which of the following, if present will not decolourise the KMnO₄ solution

If we use phenolphthalein as an indicator in a titration of $N{a}_{2}C{O}_3$ with $HCl,$ the usual result is

$N{a}_{2}C{O}_3$ cannot be used to identify

To an inorganic mixture dil. ${\mathrm{H}}_{2}S{\mathrm{O}}_4$ is added in cold; colourless, odourless gas is evolved. The mixture contains

When $C{O}_2$ is passed into lime water it turns milky. When excess of $C{O}_2$ is passed, milkyness disappears because

A salt is heated first with dil. $H_{2}S{O}_4$ and then with conc. $H_{2}S{O}_4$ . No reaction takes place. It may be

Corrosive sublimate $\left(\mathrm{H}\mathrm{g}{\mathrm{Cl}}_2\right)$ can be used to distinguish between:

(i) $A+{\text{Na}}_2{\text{CO}}_3\to B+\text{C},(ii)A\stackrel{{\text{CO}}_2}{\to }(Milky)C$

The chemical formula of A and B are respectively :

Which of the following carbonates do not give metal oxide on heating?