Question

At normal temperature and pressure conditions, water boils at ${100}^{\circ }C$. Deep down the mine, at what temperature will the water boil?

• A. At ${100}^{\circ }C$
• B. Greater than ${100}^{\circ }C$
• C. Less than ${100}^{\circ }C$
• D. Water will not boil

Answer 1

The correct option is B

Greater than ${100}^{\circ }C$

Boiling point of water at atmospheric pressure is ${100}^{\circ }C$.
Pressure inside the mines is greater than the normal atmospheric pressure. We know that boiling point increases with increase in pressure. Hence water boils at a temperature greater than ${100}^{\circ }C$.