Why can high water vapour increase the human feeling of heat?
Answer and explanation
Correct answer: Because it can slow the evaporation of sweat
The governing concept is humidity and evaporative cooling. Sweat removes body heat when it evaporates from the skin, but air already containing abundant water vapour has less capacity to accept additional moisture. Evaporation therefore slows, reducing cooling and increasing perceived heat, especially when air movement is limited. Option A is correct; the other choices are physically impossible.
Frequently asked questions
What is the correct answer to this question?
Because it can slow the evaporation of sweat
Why is this the correct answer?
The governing concept is humidity and evaporative cooling. Sweat removes body heat when it evaporates from the skin, but air already containing abundant water vapour has less capacity to accept additional moisture. Evaporation therefore slows, reducing cooling and increasing perceived heat, especially when air movement is limited. Option A is correct; the other choices are physically impossible.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
