Question

$Statement1:$ Hot air is lighter than cold air.
$Statement2:$ Cold air is lighter than hot air.

• A. Both statements are false.
• B. Both statements are true.
• C. Statement 2 is true and statement 1 is false.
• D. Statement 1 is true and statement 2 is false.

Answer 1

The correct option is D Statement 1 is true and statement 2 is false.

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> On heating, the air expands and occupies more space, thus becoming lighter. Hence, hot air is lighter than cold air.