MEDIUM
6th CBSE
IMPORTANT
Earn 100
Name four substances which have (i) lustre, (ii) no lustre
Important Questions on Practice Assignment (Based on Chapter 4 — Sorting Materials Into Groups)
MEDIUM
6th CBSE
IMPORTANT
Why is it necessary to classify objects into groups?
MEDIUM
6th CBSE
IMPORTANT
Why do most of the metals lose their lustre when they are exposed to air?
MEDIUM
6th CBSE
IMPORTANT
Discuss how property of hardness of a material decides the purpose for which it can be used. Explain with proper examples.
MEDIUM
6th CBSE
IMPORTANT
Why are gold and silver metals made into ornaments?
MEDIUM
6th CBSE
IMPORTANT
Describe solubility of gases in water and their importance briefly.
HARD
6th CBSE
IMPORTANT
What is matter? Explain its kinds on the basis of arrangement of its molecules
HARD
6th CBSE
IMPORTANT
Explain three main properties of metals and their uses due to such properties.
HARD
6th CBSE
IMPORTANT
What are miscible and immiscible liquids? How can you separate two immiscible liquids using a separating funnel?
