Question

a) Air, honey, water, chalk, cotton and iron (Increasing order of their density.)​

Answer 1

Explanation:

The mass per unit volume of a substance is called density. (Density = mass/volume)

The increasing order of density is air < exhaust from chimney < cotton < water < honey < chalk < iron.

I hope it helps

Answer 2

Answer:

Air>Cotton>water>honey>chalk>iron