Question

The expansion in liquid and gases on heating is called:

• A. linear expansion
• B. cubical expansion
• C. superficial expansion
• D. none of the above

Answer 1

The correct option is B

cubical expansion

1. Liquids do not have a definite length or area but have a definite volume.
2. Thus, the only expansion in liquids is volume expansion or cubical expansion.
3. Gases do not have a definite shape, but in an enclosed vessel they have a definite volume.
4. When the gases are heated they expand in volume, i.e., they have cubical expansion.

Hence, the correct answer is an option (B): cubical expansion