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प्रश्न
Name (formula is not acceptable) the gas produced in the following reaction:
By the action of concentrated nitric acid on copper.
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उत्तर
Nitrogen dioxide
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संबंधित प्रश्न
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 action of heat on the blue crystalline solid X gives a reddish brown gas Y, a gas which re-lights a glowing splint and leaves a black residue. When gas Z, which has a rotten egg smell, is passed through a solution of X, a black ppt. is formed.
- Identify X, Y and Z.
- Write the equation for the action of heat on X.
- Write the equation between solution X and gas Z.
Give reason for the following:
Nitric acid is used in purification of gold.
Give reason for the following:
Concentrated nitric acid is a stronger oxidizing agent.
Complete and balance the following equation :
FeSO4 + NO + H2O → ______________
Complete and balance the following equation:
Cu + HNO3 → NO2 + ________+ _________
Write the equation to show the reaction between the following:
Dilute nitric acid to produce carbon dioxide.
Explain why nitric acid is kept in a reagent bottle for a long time.
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.
