HARD
7th CBSE
IMPORTANT
Earn 100

Select the odd one out.
Sublimation, Ammonium chloride, Sublimate, Evaporation, Melting of a solid.

52% studentsanswered this correctly

Important Questions on Physical and Chemical Changes
HARD
7th CBSE
IMPORTANT
Magnesium ribbon, Dazzling light, Chemical change, Exothermic reaction, Crystallisation.

MEDIUM
7th CBSE
IMPORTANT
Iron, Moist air, Brown powdery substance, Galvanization, Lustrous.

MEDIUM
7th CBSE
IMPORTANT
Define the Following Terms:
Reversible and Irreversible changes

EASY
7th CBSE
IMPORTANT
Define the following term:
Physical change

EASY
7th CBSE
IMPORTANT
Define the following term:
Chemical change

EASY
7th CBSE
IMPORTANT
Define the following term.
Rusting of iron

MEDIUM
7th CBSE
IMPORTANT
Define the following term:
Crystallisation

HARD
7th CBSE
IMPORTANT
