(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

State the purpose of liquefying ammonia produced in the process.

1. Which feature of the ammonia molecule leads to the formation of the ammonium ion when ammonia dissolves in water?
2. Name the other ion formed when ammonia dissolves in water.
3. Give one test that can be used to detect the presence of the ion produced in (a) and (b).

Name the other ion formed when ammonia dissolves in water.

Give one test that can be used to detect the presence of the ion produced in (i) and (ii).

Name the substance used for drying ammonia.

With reference to Haber's process for the preparation of ammonia, write the equation and the conditions required.

Give a balanced equation for the reduction of hot copper (II) oxide to copper using ammonia gas.

Catalyst oxidation of ammonia.

Mention three important uses of nitric acid. Give the properties of the nitric acid involved in its use.

How does sulphuric acid occur in nature?

Name the following:
Products obtained by dissolving sulphur dioxide and chlorine in water.

Name the following:
Solution obtained by dissolving sulphur trioxide in 98% sulphuric acid.

What would you observe in the following case?
Sulphur trioxide is dissolved in water on a large scale.

What would you observe in the following case?
100ml of 98% sulphuric acid is kept open.

Give reason for the following:
In the contact process, sulphur dioxide is dissolved in 98% sulphuric acid and not in water.

Give reason for the following:
When diluting concentrated sulphuric acid, the acid should be added to water and not water to the acid.

Give reason for the following:
Concentrated sulphuric acid must be stored in airtight bottles.

How are the following conversions brought about? Give equation and condition:
Sulphur trioxide to sulphur acid.