Question

During boiling of a liquid, bubbles are formed because

• A. the vapour pressure inside the bubbles is equal to the atmospheric pressure
• B. the vapour pressure inside the bubbles is slightly greater than the atmospheric pressure
• C. the vapour pressure inside the bubbles is slightly less than the atmospheric pressure
• D. the dissolved air gets entrapped which is being expelled.

Answer 1

Answer: (B)

During boiling, vapour pressure inside the bubble is greater than atmospheric pressure.