Powdered marble reacts faster with hydrochloric acid solution than the granular form because the powdered form has?

The air pollutant unknown in nature is?

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...

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