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)

SEE ALSO  A decrease in atomic size and an increase in nuclear charge across a period lead to?

Copyright warnings! Do not copy.