Question

Select the correct alternative:
The boiling point of a liquid is increased by

• A. increasing the volume of liquid
• B. increasing the pressure, on liquid
• C. adding ice to the liquid
• D. decreasing pressure on liquid.

Answer 1

Answer: (B)

increasing the pressure, on liquid

Boiling point of a liquid increases with increase in pressure.Since a liquid vaporises when molecules moves faster and farther apart but while increasing pressure, we are applying an external force to hold molecules closer to each other. Hence, molecules will require more energy to overcome this resistance thus this increases boiling point of liquid.