(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Chemistry

What is the valency of :

carbon in CH₄

Choose the correct answer from the options given below.

The formula of sodium carbonate is Na₂CO₃ and that of calcium hydrogen carbonate is

Write the balanced chemical equation of the following reaction. sodium hydroxide + sulphuric acid → sodium sulphate + water

Write the balanced chemical equation of the following reaction. potassium bicarbonate + sulphuric acid → potassium sulphate + carbon dioxide + water

Write the balanced chemical equation of the following reaction.
potassium bicarbonate + sulphuric acid → potassium sulphate + carbon dioxide + water

Write the balanced chemical equation of the following reaction. iron + sulphuric acid → ferrous sulphate + hydrogen.

Write the balanced chemical equations of the following reactions.

chlorine + sulphur dioxide + water →  sulphuric acid + hydrogen chloride

Write the balanced chemical equation of the following reaction.

silver nitrate → silver + nitrogen dioxide + oxygen

Write the balanced chemical equation of the following reaction.

copper + nitric acid → copper nitrate + nitric oxide + water

Write the balanced chemical equation of the following reaction.

ammonia + oxygen → nitric oxide + water

Write the balanced chemical equation of the following reaction.

barium chloride + sulphuric acid → barium sulphate + hydrochloric acid

Write the balanced chemical equation of the following reaction.

zinc sulphide + oxygen → zinc oxide + sulphur dioxide

Write the balanced chemical equation of the following reaction.

aluminium carbide + water → aluminium hydroxide + methane

Write the balanced chemical equation of the following reaction.

iron pyrites(FeS₂) + oxygen → ferric oxide + sulphur dioxide

Write the balanced chemical equation of the following reaction.

Potassium permanganate + hydrochloric acid → potassium chloride + manganese chloride + chlorine + water

Write the balanced chemical equation of the following reaction.

aluminium sulphate + sodium hydroxide → sodium sulphate + sodium meta aluminate + water.

Write the balanced chemical equation of the following reaction.

aluminium + sodium hydroxide + water → sodium meta aluminate + hydrogen

Write the balanced chemical equation of the following reaction.

potassium dichromate + sulphuric acid → potassium sulphate + chromium sulphate + water + oxygen.

Write the balanced chemical equation of the following reaction.

potassium dichromate + hydrochloric acid → Potassium chloride + chromium chloride + water + chlorine