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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
Write a balanced chemical equation for the following:
Action of cold and dilute Nitric acid on Copper
Name the gas evolved when the following mixtures are heated.
Sodium nitrite and ammonium chloride.
Name the oxide of nitrogen which turns brown on exposure to air. How is it prepared?
The nitrate salt which does not give a mixture of NO2 and O2 on heating is ______.
What happens when (Given balanced equation):
Nitric acid is added to Kl (aq)?
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?
Give reason for the following:
In the laboratory preparation of nitric acid, the mixture of concentrated sulphuric acid and sodium nitatre should not be heated very strongly, above 200°C
State the conditions for the oxidation of ammonia to nitrogen monoxide [nitric oxide], in the manufacture of nitric acid by Ostwald's process. Write the balanced equcation for the reaction.
What is the property of nitric acid which allows it to react with copper?
From the following list of substances, choose one substance in the case which matches the description given below:
Ammonium nitrate, calcium hydrogen carbonate, copper carbonate, lead nitrate, potassium nitrate, sodium carbonate, sodium hydrogen carbonate, zinc carbonate.
A Substance that gives off only oxygen when heated.
