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7th ICSE
IMPORTANT
Earn 100

The chemical reaction between quick lime and water is characterised by:

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Important Questions on Language of Chemistry

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7th ICSE
IMPORTANT

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

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7th ICSE
IMPORTANT
A reaction in which chemical change takes place is called a chemical reaction
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7th ICSE
IMPORTANT
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.
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7th ICSE
IMPORTANT
A chemical equation signifies the exact composition of the substances.
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7th ICSE
IMPORTANT
A catalyst is a substance which alter the speed of the reaction.
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7th ICSE
IMPORTANT

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.

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7th ICSE
IMPORTANT

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

Close contact, Solution form, Light, Air

EASY
7th ICSE
IMPORTANT

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

Combination, decomposition, catalyst, displacement