MEDIUM
7th CBSE
IMPORTANT
Earn 100
Why is the sublimation a physical change?
Important Questions on Physical and Chemical Changes
MEDIUM
7th CBSE
IMPORTANT
HARD
7th CBSE
IMPORTANT
EASY
7th CBSE
IMPORTANT
Select the odd-one-out giving a reason.
Burning of wood, ageing of living beings, stretching of rubber band, rusting of iron
EASY
7th CBSE
IMPORTANT
Change in colour, Change in temperature, Physical change, Breaking of a stick, Curdling of milk
HARD
7th CBSE
IMPORTANT
Select the odd one out.
Sublimation, Ammonium chloride, Sublimate, Evaporation, Melting of a solid.
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
