Question

Which of the following shows the correct order of increasing density?

• A. Air < Oil < Brick
• B. Oil < Air < Brick
• C. Brick < Oil < Air
• D. Air < Brick < Oil

Answer 1

The correct option is A Air < Oil < Brick

Density defines how closely packed an object or material is. Particles in solids, like bricks, are closely packed. They have very less or no space between them. Thus, they have a high density. Particles in liquids, like oil, have more space between them as compared to solids, but less compared to air. Thus, they are less dense. Particles of gases, like air, have large space between them. So, they have very low density.
Hence, the correct increasing order of density would be-
Air (gas) < Oil (liquid) < Brick (solid)