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

State your observation when :
Dilute hydrochloric acid is added to copper carbonate.

Write an equation for the following:

Catalytic oxidation of ammonia

1. Name the catalyst used in the above equation.
2. In the reaction referred to in the above equation, the catalyst glows red hot. Why?
3. What is the name of the industrial process which starts with the reaction referred to in the above equation?

(a) Name the catalyst used in 1(ii)
(b) In the reaction referred to in 1(ii), the catalyst glows red hot. Why?
(c) What is the name of the industrial process which starts with the reaction reffered to in 1 (ii)?

Look at the following reaction :
A. Nitrogen + metal → compound X
B. X + water → ammonia + another compound
C. Ammonia + metal oxide → metal + water + N2

(i) One metal that can be used for reaction in A is magnesium.

(a) Write the formula of the compound X, that is formed.
(b) Write the balanced equation for reaction B, where Xis the compound formed.
( c) Which property of ammonia is demonstrated by reaction C?

Industrially, ammonia is obtained by direct combination of nitrogen and hydrogen.
(i) Write balanced equation for the direct combination of nitrogen and hydrogen.
(ii) Which of the metals - iron, platinum, copper - catalyse this direct combination?
(iii) Is the formation of ammonia promoted by high pressure or low pressure?

Write the equation for:
The preparation of ammonia from ammonium chloride and calcium hydroxide.

Write the equation for the reaction in the Haber process, that forms ammonia.

Write the equations for the following reactions, which result in the formation of ammonia:
(i) A mixture of ammonium chloride and slaked lime is heated.
(ii) Aluminium nitride and water.

Write a balanced chemical equation for a reaction in which ammonia is oxidised by the following:

A gas which is not oxygen.

Write the equation for the following :

Ammonium chloride is treated with sodium hydroxide.

Give a balanced chemical equation for the following:

Reaction of ammonia with excess of chlorine.

Write a balanced chemical equation for the lab preparation of ammonia.

How is ammonia dried and collected in the laboratory?

An element has 2 electrons in its N shell. It reacts with a non-metal of atomic number 7. The compound formed reacts with warm water and produces a basic gas. Identify the elements and write a balanced chemical reaction.

Name the anion present in the following compound:

The action of heat on the insoluble compound C produces a gas which turns lime water turbid.

Write a balanced equation for the following conversion:

Nitrogen trichloride from ammonia.

The catalyst used in the oxidation of ammonia is ______.