Question

Which of the following are the examples of diffusion of gases?

• A. Smell of food.
• B. Smell of perfume.
• C. Spreading of ink in water.
• D. Fragrance of an incense stick.

Answer 1

Answer: (A), (B), (D)

The correct options are
A Smell of food.
B Smell of perfume.
D Fragrance of an incense stick.

The spreading out and mixing of a substance with another substance due to the motion of its particles is called diffusion. The diffusion of gases allows the spread of the smell of a lot of things quickly. The smell of food, perfume, and fragrance of the incense stick diffuses in air.