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

Give a reason for the following.

A mixture of hydrogen and chlorine can be separated by passage through a porous pot.

Select the correct answer from the symbol in the bracket.

The element, which like hydrogen has one valence electron.

The reaction can be classified as:

State which of the following type, take place in the reaction is given below.

\[\ce{Cl2 + 2Kl->2KCl + l2}\]

The reaction can be classified as:

State which of the following type, take place in the reaction is given below.

\[\ce{2Mg + O2->2MgO}\]

The reaction can be classified as:

State which of the following type, take place in the reaction is given below.

\[\ce{SO2 + 2H2O + Cl2->2HCl + H2SO4}\]

The reaction can be classified as:

State which of the following type, take place in the reaction is given below.

\[\ce{AgNO3 + HCl->AgCl + HNO3}\]

The reaction can be classified as:

State which of the following type, take place in the reaction is given below.

\[\ce{4HNO3->4NO2 + 2H2O + O2}\]

Define the following type of chemical change or reaction with a suitable example.

Direct combination reaction or synthesis

Define the following type of chemical change or reaction with a suitable example.

Decomposition reaction

Define the following type of chemical change or reaction with a suitable example.

Displacement reaction or substitution reaction

Define the following type of chemical change or reaction with a suitable example.

Double decomposition reaction

Give a balanced equation for a direct combination reaction involving:

Two elements – one of which is a neutral gas and the other a yellow non-metal

Give a balanced equation for a direct combination reaction involving:

Two elements – one of which is a neutral gas and the other a monovalent metal

Give a balanced equation for a direct combination reaction involving:

Two compounds – resulting in the formation of a weak acid

Give a balanced equation for the following reaction of synthesis involving the formation of:

An acid – from sulphur dioxide gas

Give a balanced equation for the following reaction of synthesis involving the formation of:

An alkali – from a basic oxide – sodium oxide

Give a balanced equation for the following reaction of synthesis involving the formation of:

A salt – from a trivalent metal and a coloured gas.

Convert nitrogen to ammonia by a direct combination reaction.

Convert hydrogen to hydrogen chloride by a direct combination reaction.

Give a balanced equation for thermal decomposition of lead carbonate