Question

1. Name a crystalline substance which is:
i) green in colour and give burnt sulphur smell on heating-
ii) blue in colour and turns white on heating.

Answer 1

Answer:Ferrous Sulphate

Explanation:

The ferrous sulphate crystals are light green. Ferrous sulphate is also obtained as a by-product in the manufacture of titanium pigment and copper sulphate. The gas given out smells the characteristic odour of burning sulphur. The colour changes from light green to white colour. On further heating white substance turns into dark brown solid.

Answer 2

Answer:

i: ferrous sulphate

ii: hydrated copper sulphate