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

Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of reduction.

Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of oxidizing agent.

Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of reducing agent.

What would be the mass of CO₂ occupying a volume of 44 litres at 25°C and 750 mm pressure.

State the position of the following in the periodic table:

Halogens

How will you prove that hydrochloric acid contains

1. hydrogen
2. chlorine?

Write equations for the reactions.

State the type of bonding present in ammonia, show by a diagram.

What is the formula for liquid ammonia?

Ammonia cannot be collected over water. Give reason.

Give reasons:

Ammonium compounds do not occur as minerals.

Ammonia is manufactured by Haber Process.

Mention two possible ways by which ammonia produced is removed from unchanged gases.

Ammonia is manufactured by Haber Process.

What is the function of finely divided iron?

Ammonia is manufactured by Haber Process.

What is the percentage formation of ammonia?

Ammonia is manufactured by Haber Process.

How can this percentage formation be increased?

A gas ‘P’ gives dense white fumes with chlorine. Its aqueous solution gives a blue colour with copper (II) hydroxide. Give the name and formula of the gas P.

Sulphuric acid is manufactured by the contact process.

Name the catalyst used.

Sulphuric acid is manufactured by the contact process.

Why H₂SO₄ is not obtained by directly reacting SO₃ with water?

Sulphuric acid is manufactured by the contact process.

Name the chemical used to dissolve SO₃ and also name the product formed. Give all the main reactions to this process.

Sulphuric acid is manufactured by the contact process
Name a gas that can be oxidized to sulphur.

Write a balanced chemical equation:

When hot and concentrated sulphuric acid reacts with the sulphur.