(English Medium) ICSE Class 10 - CISCE Important Questions

The diagram given below is a representation of the Industrial preparation of Nitric acid by Ostwald’s process. With respect to the process answer the following questions:

1. Write the temperature and the catalyst required during the catalytic oxidation of ammonia.
2. Give balanced chemical equation for the reaction occurring duringthe conversion of nitrogen dioxide to nitric acid.

Write a balanced chemical equation for the following: 

Action of concentrated sulphuric acid on Sulphur.

State one relevant observation for given reactions:

Addition of ethyl alcohol to acetic acid in the presence of concentrated Sulphuric acid

State one relevant observation for given reactions:

Action of concentrated Sulphuric acid on hydrated copper sulfate

How will you distinguish between dilute hydrochloric acid and dilute sulphuric acid using lead nitrate solution?

Write balanced chemical equations to show The dehydrating property of conc. Sulphuric acid with sugar.

Write balanced chemical equations to show how SO₃ is converted to Sulphuric acid in the contact process.

Write balanced chemical equations for the action of dilute sulphuric acid on sodium sulphite.

State your observations when Concentrated Sulphuric acid is added to Sugar Crystals

A, B, C, and D summarize the properties of sulphuric acid depending on whether it is dilute or concentrated.

A = Typical acid property

B = Non volatile acid

C = Oxidizing agent

D = Dehydrating agent

Choose the property (A, B, C or D) depending on which is relevant to each of the following

1) Preparation of Hydrogen chloride gas

2) Preparation of Copper sulphate from copper oxide.

3) An action of conc. Sulphuric acid on Sulphur.

The acid which is used in the preparation of a volatile acid

Identify the acid in the following case:

The acid which produces sugar charcoal from sugar.

Identify the acid in the following case:

The acid on mixing with lead nitrate solution produces a white precipitate, which is insoluble even on heating.

Give appropriate scientific reasons for The electrical conductivity of acetic acid is less in comparison to the electrical conductivity of dilute sulphuric acid at a given concentration.

Give balanced chemical equations for the action of sulphuric acid on the following:

Potassium hydrogen carbonate.

Give balanced chemical equations for the action of sulphuric acid on the following:

Sulphur

In the contact process for the manufacture of sulphuric acid give the equations for the conversion of sulphur trioxide to sulphuric acid.

Quicklime is not used to dry HCl gas because _____.

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

Sodium nitrate and sodium sulphite (using dilute sulphuric acid).

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

Dilute sulphuric acid and dilute hydrochloric acid (using barium chloride solution)