(English Medium) ICSE Class 10 - CISCE Important Questions

Select from the list the gas that matches the description given in case

[ammonia, ethane, hydrogen chloride, hydrogen sulfide, ethyne]

This gas is used as a reducing agent in reducing copper oxide to copper

State one relevant observation for the following

When ammonia gas is burnt in an atmosphere of excess oxygen.

The acid which is prepared by catalytic oxidation of ammonia.

Ammonia gas is collected by ______.

Distinguish between the given pair of compounds using the test given within brackets:

Iron (II) sulphate and iron (III) sulphate (using ammonium hydroxide)

Write a balanced chemical equation for the following reaction:

Ammonium chloride reacts with calcium hydroxide.

Name the other ion formed when ammonia dissolves in water.

State the conditions required for the given reaction to take place:

Catalytic oxidation of ammonia to nitric oxide.

Ammonia reacts with excess chlorine to form ______.

Ammonia gas is passed over heated copper (I) oxide. 

Identify the substance underlined:

The catalyst used to oxidise ammonia. 

Identify the substance underlined:

The organic compound which when solidified, forms an ice like mass.

 Name the gas evolved in each of the following cases : 
Alumina undergoes electrolytic reduction.

 Name the gas evolved in each of the following cases :
Ethene undergoes hydrogenation reaction. 

Name the gas evolved in each of the following cases :
Ammonia reacts with heated copper oxide.

Study the flow chart given and give balanced equations to represent the reactions A, B and C:

\[\ce{Mg3N2 ->[A] NH3 <=>[B][C] NH4Cl}\]

 Copy and complete the following table which refers to the industrial method for the preparation of ammonia and sulphuric acid: 

Name the gas evolved when the following mixtures are heated.

Calcium hydroxide and ammonium chloride.

Write a balanced chemical equation for the following:

When an excess of ammonia is treated with chlorine.

Give a balanced chemical equation for the following:

Lab. preparation of ammonia using an ammonium salt.