Important Compounds of Group 16 Elements

Favourable conditions for the high production of ${\mathrm{SO}}_3$ by catalytic oxidation of ${\mathrm{SO}}_2$ with ${\mathrm{O}}_2$ which is the key step in the Contact process of manufacture of ${\mathrm{H}}_2{\mathrm{SO}}_4$ are

The chemical formula of _____ (soda/oleum) is ${\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_7$.

The chemical formula of oleum is ${\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_7$.

The structure is shown below is of _____ (oleum/soda).

Write the chemical formula of oleum.

The acid which has peroxy linkage is 

Sulphuric acid is

_____ gas is evolved in the thermal decomposition of potassium chlorate.

The products formed in the thermal decomposition of potassium chlorate in the presence of a catalyst are:

On addition of concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4$ to a chloride salt, colourless fumes are evolved but in case of an iodide salt, violet fumes come out. This is because

Moist hydrogen cannot be dried over concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4$ because it:

Industrially sulphuric acid is manufactured by-

Common name of concentrated sulphuric acid is-

The acid, which does not contain peroxy linkage, is

Identify a neutral oxide from the following oxides.

Bleaching action of ${\mathrm{SO}}_2$ is due to :

Moist hydrogen cannot be dried over concentrated ${\mathrm{H}}_2{\mathrm{SO}}_4$ because it:

Which of the following reactions is incorrect?

Which of the following is used as disinfectant?

Which of the statements below is/are correct?
(i) Ozone is a toxic gas.
(ii) Ozone is a strong oxidising agent.
(iii) Ozone cannot react with unburnt hydrocarbons in the air.