Question

Statement I: Water can be made to boil without heating.
Statement II: Boiling point is lowered by increasing pressure

• A. If both statement I and statement II are true and statement II is the correct explanation of statement I
• B. If both statement I and statement II are true but statement II is not the correct explanation of statement I
• C. If statement I is true but statement II is false
• D. If both statement I and statement II are false

Answer 1

Answer: (C)

We know that liquid starts boiling when its vapour pressure becomes equal to atmospheric pressure. Hence, to boil the water without heating we have to decrease the external pressure.