Nitric Acid

${\mathrm{HNO}}_2$ on disproportionation gives ${\mathrm{HNO}}_3$ and

${\mathrm{NH}}_3+{\mathrm{O}}_2\underset{\mathrm{\Delta }}{\overset{\mathrm{Pt}}{\to }}\mathrm{A}+{\mathrm{H}}_2\mathrm{O}$
$\mathrm{A}+{\mathrm{O}}_2⟶\mathrm{B}$
$\mathrm{B}+{\mathrm{H}}_2\mathrm{O}⟶\mathrm{C}+\mathrm{D}$
$\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ respectively are

The metal which liberates hydrogen gas when reacted with dilute nitric acid is-

The reagent used to dissolve gold is-

Concentrated nitric acid turns the colour of the skin into-

The following chain of reactions give nitric acid as product by Ostwald's process:

$2\mathrm{NO}\left(\mathrm{g}\right)+ {\mathrm{O}}_2\left(\mathrm{g}\right)\stackrel{}{\rightleftharpoons } \_\_\_\_\_\left(\mathrm{g}\right)$
$3{\mathrm{NO}}_2\left(\mathrm{g}\right)+ {\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\stackrel{}{\to }\_\_\_\_\_ \left(\mathrm{aq}\right) + \mathrm{NO}\left(\mathrm{g}\right)$
The total no. of Nitrogen atoms for all the products on the right side are:

Select the correct statement from the following:

Select the correct statement.

Choose from the following list, as to what matches the descriptions given below:

[ $\mathrm{A}:{\mathrm{KNO}}_3$, $\mathrm{B}:{\mathrm{NO}}_2$, $\mathrm{C}$: Magnesium, $\mathrm{D}:\mathrm{Hg}{\left({\mathrm{NO}}_3\right)}_2$, $\mathrm{E}:\mathrm{Zn}{\left({\mathrm{NO}}_3\right)}_2$ ]

A gas that stains nitric acid yellow during its laboratory preparation. (Enter your correct answer as $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D} \mathrm{or} \mathrm{E}$)

In the ostwald's process, nitric acid is prepared by the catalytic oxidation of:

When ammonia is oxidsed by oxygen in the presence of platinum at $800°\mathrm{C}$, the gas obtained is:

During laboratory preparation of nitric acid, conc. sulphuric acid is used instead of conc. hydrochloric acid, because:

During laboratory preparation of nitric acid, it is pale yellow in colour, because:

Which of the following is the naturally occurring nitrate?

Sodium nitrate, when treated with _____, produces nitric acid.

The overall reaction for the Ostwald process for the production of ${\mathrm{H}\mathrm{N}\mathrm{O}}_3$ is

The gradual addition of potassium iodide solution to $\mathrm{Bi}{\left({\mathrm{NO}}_3\right)}_3$ solution initially, produces a dark brown precipitate which dissolves in excess of $\mathrm{KI}$ to give a clear yellow solution. Identify the yellow precipitate.