Question

A black colour insoluble solid made from iron and sulphur on heating
1) Carbon
2) Coke
3) Iron Sulphate
4) Smoke​

Answer 1

Answer:

A black colour insoluble solid made from iron and sulphur on heating

1) Carbon

2) Coke

3) Iron Sulphate

4) Smoke

Explanation:

4) Smoke is the correct answer