Question

When a balloon is inflated by blowing air into it, the

• A. temperature inside the balloon increases
• B. air pressure inside the balloon increases
• C. humidity inside the balloon decreases
• D. density inside the balloon decreases

Answer 1

The correct option is B

air pressure inside the balloon increases

Gas particles exert pressure on the walls of the container in which the gas is filled. When a balloon is inflated, the air inside it expands, thereby exerting pressure on the walls of the balloon. As a result, the size of the balloon increases.