Which of the following is not true with respect to air?

• Air is the Earth's atmosphere, the air around us is a mixture of many gases and dust particles.
• Air contains about 78% of nitrogen, 21% of oxygen, 0.9% of argon, 0.04% of carbon dioxide, and very small amounts of other gases and water vapour.

Key Points

Properties of Air:

• Air can be compressed.
• Air has weight.
• Air is impacted by temperature.

• Air is colourless when it is clear and pure.
• Aircraft can fly with the help of pressure differences in air.
• Air is a form of matter which has mass.
• Air occupies space, for example when the air is in the balloons.
• Air is made up of gases and dust particles.

From the above points, it becomes clear that air is colourless.