Question 1
The mass per unit volume of a substance is called density (density = mass/volume). Arrange the following in order of increasing density - air, exhaust from chimney, honey, water, chalk, cotton, and iron.
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Solution
We can solve this question by keeping this concept in mind:- The correct order of density of gas, liquid and solid are:- Gas<Liquid < Solid The given substances in the increasing order of their densities can be represented as: Air < Exhaust from chimney < Honey < Water < Chalk < Cotton< Iron