Question

Water boils at a temperature less than ${100}^o$C on the top of a high mountain.

• A. True
• B. False

Answer 1

The correct option is A True

True, water boils at temperature below ${100}^{o}C$ on the top of mountain because of decreased pressure on the mountains. Since air pressure is lower in mountains, vapour pressure of water will reach atmospheric pressure at lower temperature.

Actually, a liquid begins to boil when vapour pressure equals to atmospheric pressure at specific temperature.