In living rooms, number of air changes in one hour should be: March 2013
Correct Answer: 3-Feb
Description: Ans. B i.e. 2-3 Air changes per hour is a measure of how many times the air within a defined space (normally a room or house) is replaced. It is recommended that in the living rooms, there should be 2 or 3 air changes per hour; in work rooms and assemblies 4 to 6 air changes.
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Social & Preventive Medicine
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