Tag: pollution of air and water

Questions Related to pollution of air and water

Which of the following is not a refrigerant?

chemistry pollution of air and water environmental impact: global warming green house effect geobiochemical cycle

  1. $CHClF _{2}$

  2. $NH _{3}$

  3. $Ether$

  4. $C _{2}H _{4}$

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Correct Option: D
Explanation:

Ethene is a colorless flammable gas with a faint "sweet and musky" odor when pure.
Ethylene is widely used in chemical industry. Ethylene is also an important natural plant hormone, used in agriculture to force the ripening of fruits. it is a non refrigerant.

The progressive warming up of the earth's surface is mainly due to :

chemistry pollution of air and water environmental impact: global warming green house effect geobiochemical cycle

  1. automobile exhaust

  2. blanketing effect of carbon dioxide in atmosphere

  3. reforestation

  4. thickening of ozone layer

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Correct Option: B
Explanation:

$CO _2$ goes in the atmosphere and make a thick layer, this layer allowes the light to enter into the atmosphere but do not allow it to exit, the heat get trapped into the atmosphere and leads to the warming up of the surface.