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Question Bank Solutions for ICSE Class 9 - CISCE - Chemistry

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Chemistry
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What is a chemical reaction?

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

State the conditions necessary for a chemical change or reaction.

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Define the following terms

Precipitate

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Give an example of a reaction where the following are involved

Heat

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Give an example of a reaction where the following are involved

Light

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Give an example of a reaction where the following are involved

Electricity

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Give an example of a reaction where the following are involved

Close contact

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Give an example of a reaction where the following are involved

Solution

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Give an example of a reaction where the following are involved

Pressure

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Give an example of a reaction where the following are involved

Catalyst

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Define Photochemical reaction
Give an example

 

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Define Electrochemical reaction
Give an example 

 

 

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Give an example of the following chemical change.

Two gases combine to form white solid

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Give an example of the following chemical change.

Two solids combine to form a liquid

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Give an example of the following chemical change.

A reaction where colour change is noticed

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Write the chemical reaction where the following changes are observed.

Gas is evolved

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Write the chemical reaction where the following changes are observed.

Colour change is noticed

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Write the chemical reaction where the following changes are observed.

Precipitate is formed

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Write the chemical reaction where the following changes are observed.

Physical state is changed

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes

Give reason for the following:

Silver nitrate solution is kept in coloured bottles.

[0.02] Chemical Changes and Reactions
Chapter: [0.02] Chemical Changes and Reactions
Concept: Classification of Change: Chemical Changes
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