Q. Necessity of ventilation is ____________

(A) Removal of carbon dioxide
(B) To supply fresh air rich in oxygen
(C) To control dust
(D) all of the above

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✅ Correct Answer: (D) all of the above

Published by Manisha Agrawal ⭐ 9.34K Points at 11-Sep-2023 07:26 am in Building Services

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