Question

The temperature of boiling water in steam engine may be high because _________.

• A. there are dissolved substances in water
• B. there is low pressure inside the boiler
• C. there is high pressure inside the boiler
• D. the fire is at very high temperature

Answer 1

Answer: (C)

there is high pressure inside the boiler

At high pressure, boiling point increases, so if temperature of boiling water is high, it implies pressure is high inside the boiler.