Question

Glass panes usually appear hazy because:

• A. water vapour settling on the tiny dust particles.
• B. it is the property of transparent substances.
• C. they are old.
• D. None of these

Answer 1

The correct option is A water vapour settling on the tiny dust particles.

Air contains some gases, water vapours, and dust particles that stick to transparent glass panes and settle down which lead to a hazy appearance.

Hence, option $A$ is correct.