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

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.

How are the following conversion brought about? Give equation and condition:
Sulphur trioxide to oleum.

How are the following conversion brought about? Give equation and condition:
Aqueous lead nitrate to lead sulphate.

How are the following conversion brought about? Give equation and condition:
Aqueous barium chloride to barium sulphate.

Give examples of the use of sulphuric acid as
An electrolyte in everyday use

How will you distinguish between conc. HCl and conc. H₂SO₄?

Choose the current answer from the options given below :
Which of the following gas dissolves in H₂SO₄ to give alum?