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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
Ammonia is used in the Ostwald process.
Give the sources of reactants used in this process.
Give two chemical equations for the following:
Nitric acid showing as acidic character.
How will you prepare the following from nitric acid?
Sodium nitrate
Name a metal nitrate which on heating is changed into metal.
Name the Following:
Gas obtained by treating manganese with 1% nirtric acid.
Complete and balance the following equation :
C + HNO3 → ___________
Give reason for the following:
Commercial concentrated nitric acid is yellow in colour, but when it is dilute with water, it turns colourless.
Give one chemical test for nitric acid.
Why does pure nitric acid take on a yellowish brown colour when exposed to light?
Why should the temperature of the reaction mixture of nitric acid not be allowed to rise above 200oC?
Give one test to distinguish between the following pair of chemicals.
Zinc nitrate solution and calcium nitrate solution
