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ScienceCLASS 9CBSE

answered 27 Mar 2026

1. The mass per unit volume of a substance is called density. (density=mass/volume). Arrange the following in the order of increasing density – air, exhaust from the chimneys, honey, water, chalk, cotton and iron.

A.VERIFIED ANSWERfact-checked by tutors

Solution:

The following substances are arranged in increasing density:

Air

Exhaust from chimney

Cotton

Water

Honey

Chalk

Iron

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