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7th ICSE
IMPORTANT
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Which of the following does not involve a chemical reaction?

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Important Questions on Language of Chemistry

MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 6 - Language of Chemistry>EVALUATE YOUR UNDERSTANDING>Q 5
The chemical reaction between quick lime and water is characterised by:
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 6 - Language of Chemistry>EVALUATE YOUR UNDERSTANDING>Q 1

The substances that take part in a chemical reaction are called products.

MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 6 - Language of Chemistry>EVALUATE YOUR UNDERSTANDING>Q 2
A reaction in which chemical change takes place is called a chemical reaction
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 6 - Language of Chemistry>EVALUATE YOUR UNDERSTANDING>Q 3
The law of conservation of mass states that during a chemical reaction the total mass of the reactants must not be equal to the total mass of the products.
EASY
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 6 - Language of Chemistry>EVALUATE YOUR UNDERSTANDING>Q 4
A chemical equation signifies the exact composition of the substances.
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 6 - Language of Chemistry>EVALUATE YOUR UNDERSTANDING>Q 5
A catalyst is a substance which alter the speed of the reaction.
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 6 - Language of Chemistry>EVALUATE YOUR UNDERSTANDING>Q 1

Find the odd one out. Give scientific reasons for your answer

Melting of wax, drying of wet clothes, grinding of substance, burning of the candle.

MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 6 - Language of Chemistry>EVALUATE YOUR UNDERSTANDING>Q 2

Find the odd one out. Give scientific reason for your answer.

Close contact, Solution form, Light, Air