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As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3.(μg-microgram) | |
A. | 10 [Wrong Answer] |
B. | 90 [Correct Answer] |
C. | 800 [Wrong Answer] |
D. | 750 [Wrong Answer] |