17. Which of the following processes does not contribute to the increase of suspended particulate matter in the atmosphere?
17. Which of the following processes does not contribute to the increase of suspended particulate matter in the atmosphere?
The correct option is D usage of refrigerators and air conditioners
Explanation for correct option:
(D) Freons are used in refrigerators and air conditioners and are released primarily at the end of the lifespan of the Chlorofluorocarbons and Hydrofluorocarbons products. They do not suspend in the environment, they react with the ozone layer and damages it when released into the air.
Explanation for incorrect options:
(A) The emissions from industries contains large amount of dust particles which get picked up by the wind and get suspended in the air around.
(B) Burning of coal produce coarse particles like fly ash, fine particles which emerges and get suspended in the air.
(C) Burning of wood produce the particles like ash, fine particles etc. which will also emerges and get suspended in the air.
Hence option (D) is the correct answer.
usage of refrigerators and air conditioners
Explanation for correct option:
(D) Freons are used in refrigerators and air conditioners and are released primarily at the end of the lifespan of the Chlorofluorocarbons and Hydrofluorocarbons products. They do not suspend in the environment, they react with the ozone layer and damages it when released into the air.
Explanation for incorrect options:
(A) The emissions from industries contains large amount of dust particles which get picked up by the wind and get suspended in the air around.
(B) Burning of coal produce coarse particles like fly ash, fine particles which emerges and get suspended in the air.
(C) Burning of wood produce the particles like ash, fine particles etc. which will also emerges and get suspended in the air.
Hence option (D) is the correct answer.
