When wax is rubbed on cloth becomes water proof, why?

A steel blade placed gently on the surface of water floats on it. If the same blade is kept well inside the water, it sinks. Explain. 8. When some wax is rubbed on a cloth, it becomes waterproof. Explain.

(a) When wax is rubbed on cloth, the cloth becomes water proof. Explain why ?

Explain how rain-coats become water-proof.

When soap is rubbed on a stain curry on a white cloth, why does it becomes reddish brown and turns yellow again when the cloth is washed with plenty of water?

What are water proofing agents?

Complete the following statement : When a glass rod is rubbed with silk cloth, the rod become positively charged as

Why clothes become water-proof when wax is rubbed on them?