Question

Which among the following is the false statement?

• A. Water boils below 100⁰C on mountain peaks.
• B. Ice undergoes sublimation on the surface of the moon.
• C. Ice melts above 0^oC on mountain peaks.
• D. Cooking of food is faster on mountain peaks.

Answer 1

The correct option is D

Cooking of food is faster on mountain peaks.

Explanation for the correct option

Option (d)

• Cooking of food is faster on mountain peaks is a false statement.
• In mountains attitudes increase which results in a decrease in the pressure and because of that boiling point decreases.
• This results in the cooking of food being slower on mountain peaks as food does not get enough energy to cook.

Explanation for incorrect options:

Option(a)

• Water boils below 100⁰C on mountain peaks.
• The increase in altitude at the mountain results in a decrease in its boiling point.
• Therefore water starts to boil at 100⁰C on mountain peaks.

Option(b)

• Ice undergoes sublimation on the surface of the moon
• On the moon, the pressure is very low which results in easy sublimation of ice rather than melting.

Option(c)

• Ice melts above 0^oC on mountain peaks.
• At mountain peaks, the altitude is high, pressure decreases, and the melting point increases.
• Because of the increase in melting point, ice starts melting above 0^oC.

Hence, option(d) is correct.