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प्रश्न
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.
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उत्तर
Potassium nitrate
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संबंधित प्रश्न
Name the gas evolved when the following mixtures are heated.
Sodium Nitrite and Ammonium Chloride
Give two chemical equations for the following:
Nitric acid acting as the oxidizing agent.
How will you prepare the following from nitric acid?
Ferric nitrate
Give the chemical name and formula of the substance formed as a brown ring in the test for nitrate radical.
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.
Name the catalyst used in Ostwald process.
How can 68% nitric acid be concentrated to 98% nitric acid?
Complete and balance the following equation :
Pt + HNO3 + HCl → ___________
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
The figure given below illustrates the apparatus used in the laboratory preparation of nitric acid:
(i) Name A (a liquid), B( a Solid) and C(a liquid).
(ii) write the balanced chemical equation to show how nitric acid undergoes decomposition.
(iii) Write the balanced chemical equation for the reaction in which copper is oxidized by concentrated nitric acid.
