ICSE ICSE Class 8 - CISCE Question Bank Solutions for Chemistry

Name three reducing agents ?

Is kerosene an electrolyte or a non-electrolyte ?

What are the characteristics of a chemical reaction ? A chemical reaction is characterised by an irreversible change in which a new substance is formed.

Explain the type of reactions on the basis of the direction of reaction.

Write a short note on the information derived from a balanced chemical equation.

How is a strong electrolyte different from a weak electrolyte?

State the main postulate of the kinetic theory with special reference to Inter-particle space.

State the main postulates of the kinetic theory with special reference to – Inter-particle attraction.

State the main postulates of the kinetic theory with special reference to – Energy possessed by particles of matter.

With reference to inter-conversion of matter – on the basis of kinetic theory – explain in brief the conversion of A solid into a liquid With special reference to inter-particle space & interparticle attraction at the different stages of conversion.

With reference to inter-conversion of matter – on the basis of kinetic theory – explain in brief the conversion of A liquid into vapour [or gas] With special reference to inter-particle space & interparticle attraction at the different stages of conversion.

With reference to inter-conversion of matter – on the basis of kinetic theory – explain in brief the conversion of Vapour [or gas] into a liquid With special reference to inter-particle space & interparticle attraction at the different stages of conversion.

With reference to inter-conversion of matter – on the basis of kinetic theory – explain in brief the conversion of A liquid into a solid With special reference to inter-particle space & interparticle attraction at the different stages of conversion.

On the basis of kinetic theory explain why ammonium chloride sublims and goes from solid-state directly into vapour state.

The kinetic energy of molecules in helium is ______ compared to the kinetic energy of molecules in water. 

Give reason for the following 

Particles of matter possess energy called kinetic energy.

What is a chemical reaction?

A chemical reaction is often accompanied by external indications or characteristics which include – 

1. Colour change
2. Effervescence or gas evolved
3. Evolution or absorption of heat
4. Formation of a precipitate.

With reference to each of the above indications, state the external indication seen during – Addition of dilute acid to an active metal.

A chemical reaction is often accompanied by external indications or characteristics which include – 

1. Colour change
2. Effervescence or gas evolved
3. Evolution or absorption of heat
4. Formation of a precipitate.

With reference to each of the above indications, state the external indication seen during – Addition of dilute hydrochloric acid to silver nitrate.

A chemical reaction is often accompanied by external indications or characteristics which include – 

1. Colour change
2. Effervescence or gas evolved
3. Evolution or absorption of heat
4. Formation of a precipitate.

With reference to each of the above indications, state the external indication seen during – Addition of water to quicklime.