MEDIUM
7th ICSE
IMPORTANT
Earn 100

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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Important Questions on Language of Chemistry

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

EASY
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 6 - Language of Chemistry>EVALUATE YOUR UNDERSTANDING>Q 3

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

Combination, decomposition, catalyst, displacement

MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 6 - Language of Chemistry>EVALUATE YOUR UNDERSTANDING>Q 4

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

Permanent, Irreversible, Temporary, Heat absorbed.

EASY
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 6 - Language of Chemistry>EVALUATE YOUR UNDERSTANDING>Q 1
What type of change is involved in the formation of curd from milk?
EASY
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 6 - Language of Chemistry>EVALUATE YOUR UNDERSTANDING>Q 2
What does the symbol (aq) represent in a chemical equation?