Transmission Of Heat Question 91
Question: For proper ventilation of building, windows must be open near the bottom and top of the walls so as to let pass
Options:
A) In more air
B) In cool air near the bottom and hot air out near the roof
C) In hot air near the roof and cool air out near the bottom
D) Out hot air near the roof
Show Answer
Answer:
Correct Answer: B
Solution:
Density of hot air is lesser than the density of cold air so hot air rises up.
BETA
