MEDIUM
7th ICSE
IMPORTANT
Earn 100

Give the formula of nitrogen gas.

Important Questions on Elements, Compounds & Mixtures

MEDIUM
7th ICSE
IMPORTANT
Give the formula of sulphur dioxide gas.
HARD
7th ICSE
IMPORTANT

Explain the term mixture. Differentiate between a homogeneous & a heterogeneous mixture with one example of

(i) Solid-solid mixture.
(ii) Solid-liquid
(iii) Liquid-liquid state of the mixture.

HARD
7th ICSE
IMPORTANT

State four differences between - elements, compounds & mixtures with suitable examples.

HARD
7th ICSE
IMPORTANT
State the correct technique for separation of a sublimable solid & a non-sublimable solid mixture.
HARD
7th ICSE
IMPORTANT
State the correct technique for separation of a liquid component from soluble impurities in the liquid component.
HARD
7th ICSE
IMPORTANT
State the correct technique for separation of a lighter liquid from a heavier liquid.
HARD
7th ICSE
IMPORTANT
State the correct technique for separation of a low boiling point liquid from a high boiling point liquid.
MEDIUM
7th ICSE
IMPORTANT
State the correct technique for the separation of solid constituents in a liquid constituent by adsorption.