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

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Chemistry
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Complete the table given below.

Heat on sodium chloride Colour imparted to flame during flame test  
[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
Concept: undefined >> undefined

Complete the table given below.

Flame test for calcium chloride Acid used for flame test  
[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
Concept: undefined >> undefined

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Give the general group characteristic applied to hydrogen with respect to similarity in properties of hydrogen with alkali metals of group 1 [IA]. With special reference to valency electrons & ion formation.

[6] Study of the First Element - Hydrogen
Chapter: [6] Study of the First Element - Hydrogen
Concept: undefined >> undefined

Give a balanced equation for obtaining hydrogen from?

Boiling water using a divalent metal

[6] Study of the First Element - Hydrogen
Chapter: [6] Study of the First Element - Hydrogen
Concept: undefined >> undefined

Give a reason for the following.

Hydrogen and alkali metals of group 1 [IA] react with copper [II] oxide to give copper.

[6] Study of the First Element - Hydrogen
Chapter: [6] Study of the First Element - Hydrogen
Concept: undefined >> undefined

Explain the Silver nitrate solution is kept in coloured reagent bottles in the laboratory.

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
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State the following reaction represent oxidation or reduction.

\[\ce{Fe++->Fe+++}\]

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
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State the following reaction represent oxidation or reduction.

\[\ce{Cl- ->Cl}\]

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
Concept: undefined >> undefined

State the following reaction represent oxidation or reduction.

\[\ce{Cu++->Cu}\]

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
Concept: undefined >> undefined

State the following reaction represent oxidation or reduction.

\[\ce{Ag->Ag+}\]

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
Concept: undefined >> undefined

State the following reaction represent oxidation or reduction.

\[\ce{H->H+}\]

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
Concept: undefined >> undefined

State the following reaction represent oxidation or reduction.

\[\ce{Al->Al+++}\]

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
Concept: undefined >> undefined

State whether the following reaction is oxidation or reduction.

\[\ce{Na->Na+}\]

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
Concept: undefined >> undefined

Explain the term chemical reaction with special reference to reactants and products.

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
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Give a suitable example with an equation to show the representation of a chemical reaction.

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
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A chemical reaction is often accompanied by external indications or characteristics.

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
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Give two examples where a chemical reaction is accompanied by a change in colour of the reactants and products on completion of the reaction.

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
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Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to sodium sulphite.

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
Concept: undefined >> undefined

Give a balanced equation for a reaction involving the evolution of gas on the addition of dilute acid to calcium carbonate.

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
Concept: undefined >> undefined

Give a balanced equation for the conversion of an ammonium salt to a basic gas.

[2] Chemical Changes and Reactions
Chapter: [2] Chemical Changes and Reactions
Concept: undefined >> undefined
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