A. NO
B. CO
C. HCHO
D. DDT
Correct Answer:
Option C – HCHO
Explanation
Formaldehyde (HCHO) is the most important carcinogen in outdoor air among the 187 hazardous air pollutants (HAPs) identified by the U.S. Environmental Protection Agency (EPA)
A. NO
B. CO
C. HCHO
D. DDT
Correct Answer:
Option C – HCHO
Explanation
Formaldehyde (HCHO) is the most important carcinogen in outdoor air among the 187 hazardous air pollutants (HAPs) identified by the U.S. Environmental Protection Agency (EPA)
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