Properties of Nitric Acid

In brown ring test for nitrate ions, brown ring is formed having composition

In brown ring test for nitrate ions, brown ring is formed having composition 

Why is brown ring formed in nitrate test?

The copper turning test is a method through which we can identify _____ ions.

Which of the following test is used for the identification of nitric acid?

What is copper turnings test?

Balance the following equation.
${\mathrm{K}}_2{\mathrm{SO}}_3 + {\mathrm{HNO}}_3 \to {\mathrm{K}}_2{\mathrm{SO}}_4 + 2{\mathrm{NO}}_2 + {\mathrm{H}}_2\mathrm{O}$.
 

What happens when Potassium sulphite reacts with nitric acid? Write the balanced equation.
 

Balance the following equation.
${\mathrm{CaCO}}_3\left(\mathrm{s}\right) +{\mathrm{HNO}}_3\left(\mathrm{aq}\right) \to \mathrm{Ca}{\left({\mathrm{NO}}_3\right)}_2 \left(\mathrm{aq}\right) +{\mathrm{CO}}_2 \left(\mathrm{g}\right) +{\mathrm{H}}_2\mathrm{O} \left(\mathrm{l}\right)$.

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

The brown ring test for nitrates depends upon

Copper reacts with concentrated nitric acid to produce nitric oxide.

Magnesium reacts with very dilute nitric acid to liberate hydrogen gas.

Hot, concentrated nitric acid reacts with sulphur to form _____.

Cold, dilute nitric acid reacts with copper to give _____.

In the brown ring test, brown colour of the ring is due to

A brown ring is formed in the ring test for ${\mathrm{NO}}_3^{-}$ ion. It is due to the formation of

${\mathrm{FeSO}}_4$ forms brown ring with
 

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

[ ${\mathrm{KNO}}_3$, ${\mathrm{NO}}_2$, Magnesium, mercuric nitrate, $\mathrm{Zn}{\left({\mathrm{NO}}_3\right)}_2$ ]

A nitrate of metal which on heating leaves behind pure metal as residue. 

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 nitrate that decomposes on heating to form a residue white-yellow when hot and white when cold. (Enter your correct answer as $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D} \mathrm{or} \mathrm{E}$)