Environmental Sciences, asked by randydunn, 1 year ago

Which of the following statements about air pollution is not true?

Answers

Answered by swarna15
3
where r the statements?????
Answered by UsmanSant
0

Which of the following statements about air pollution is not true?

a) photochemical smog always contains ozone

b) the toxic effect of carbon monoxide is due to its greater affinity for hemoglobin as compared to oxygen

c) lead is the most hazardous metal pollutant in automobile exhaust

d) none of the above.

Option d is correct as all the above statements are true.

  • Photochemical smog is the cloudy smog that is formed due to the photochemical reactions between hydrocarbons and oxides of nitrogen. Photochemical reactions give secondary pollutants like Ozone, aldehydes & phenols. The statement is correct.
  • Carbon monoxide combines with Hemoglobin more readily as compared to O₂. Carbon monoxide with Hb forms a stable compound carboxyhemoglobin. It has a toxic effect because it shows competition with oxygen for the same binding site in the Fe²⁺ of Hemoglobin. Hemoglobin bound to Carbon monoxide is unable to transport O₂ and causes suffocation. Thus the statement is correct.
  • Lead is the most common pollutant from battery manufacturing plants and automobile exhausts. It causes lead poisoning which creates problems in nervous system and also inflicts brain damage. The statement is therefore correct.
  • Thus D option is correct.

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