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प्रश्न
Give reason for the following:
Nitric acid is used in purification of gold.
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उत्तर
Nitric acid is used in the purification of gold because impurities of other metals are dissolved in it.
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संबंधित प्रश्न
Name the gas evolved when the following mixtures are heated.
Sodium Nitrite and Ammonium Chloride
Explain the following:
Dilute nitric acid is generally considered a typical acid but not so in its reaction with metals.
What is the type of salt formed when the reactants are heated at a suitable temperature for the preparation of Nitric acid?
Give two chemical equations for the following:
Nitric acid showing as acidic character.
How will you prepare the following from nitric acid?
Sodium nitrate
Can we use conc. HCl in place of Conc. H2SO4 ?
Give reason for the following:
In laboratory preparation of nitric acid all the apparatus including cork should be made up of glass.
What do you observe when?
Hydrogen sulphide is bubbled through conc. HNO3?
Why does pure nitric acid take on a yellowish brown colour when exposed to light?
Write the equation for the reaction of dilute nitric acid with copper.
