Question

What would you observe when:
(i) Mixture of iron filling and sulphur powder is heated strongly.
(ii) When light is passed through a mixture of chalk powder and water.

Answer 1

(i) When the mixture of iron filling and sulfur powder is heated strongly, it forms compound $FeS$.

(ii) When light is passed through the mixture of chalk powder and water, then the light will be scattered as chalk powder and form a colloidal solution. Hence, it will show the Tyndall effect.