Advertisements
Advertisements
प्रश्न
Give reason for the following:
Nitric acid is used in purification of gold.
Advertisements
उत्तर
Nitric acid is used in the purification of gold because impurities of other metals are dissolved in it.
APPEARS IN
संबंधित प्रश्न
Name the Following:
Two coloured nitrates.
Why is freshly prepared ferrous sulphate solution used in the ring test?
What do you observe when?
Scrap zinc is heated with conc. HNO3?
What happen when (Given balanced equation):
Nitric acid is added to washing soda and the resulting gas is passed through a freshly prepared lime water?
Write balanced equation for the reaction between nitrogen and oxygen, when lightning strikes.
Dilute nitric acid is generally considered a typical acid except for its reaction with metals. In what way is dilute nitric acid different from other acids when it reacts with metals?
Explain, why only all glass apparatus should be used for the preparation of nitric acid by heating concentrated sulphuric acid and potassium nitrate.
Explain the following:
Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.
Explain the following:
Concentrated nitric acid appears yellow when it is left standing in a glass bottle.
The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid.
- Name A (a liquid), B (a solid), and C (a liquid). (Do not give the formulae.)
- Write an equation to show how nitric acid undergoes decomposition.
- Write the equation for the reaction in which copper is oxidised by concentrated nitric acid.
