MEDIUM
9th CBSE
IMPORTANT
Earn 100

State two reasons for supposing that brass is a mixture and not a compound.

Important Questions on Is Matter Around Us Pure

MEDIUM
9th CBSE
IMPORTANT
List five characteristics by which compounds can be distinguished from mixtures.
MEDIUM
9th CBSE
IMPORTANT
Explain why, a solution of salt in water is considered a mixture and not a compound.
MEDIUM
9th CBSE
IMPORTANT
State one property in which a solution of sugar in water resembles a mixture of sugar and sand, and one property in which it differs from it.
HARD
9th CBSE
IMPORTANT
You are given two liquids, one a solution and the other a compound. How will you distinguish the solution from the compound?
EASY
9th CBSE
IMPORTANT
Name a non-metal which is lustrous. (Carbon / Oxygen / Iodine)
MEDIUM
9th CBSE
IMPORTANT
Name a non-metal which is required for combustion. (Carbon / Oxygen)
MEDIUM
9th CBSE
IMPORTANT
Name a non-metal whose one of the allotropic forms is a good conductor of electricity. Name the allotrope.
MEDIUM
9th CBSE
IMPORTANT
Name a non-metal other than carbon which shows allotropy.