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Assertion : Ozone is destroyed by CFCs i...

Assertion : Ozone is destroyed by `CFCs` in the upper stratosphere.
Reason : Ozone holes increase the amount of `UV` radiation reaching the earth.

A

Assertion is false, but the reason is correct

B

Assertion and reason are incorrect

C

Assertion and reason are both correct, and the reason is the correct explanation for the assertion

D

Assertion and reason are correct, but the reason is not the correct explanation for the assertion.

Text Solution

Verified by Experts

The correct Answer is:
D
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Assertion : Ozone is getting depleted due to CFCs Reason: With depletion of ozone layer more UV radiation enters into troposphere

Assertion : Ozone layer in the upper region of atmosphere protects earth from UV radiations of sun. Reason : Ozone is a powerful oxidising agent as compared to oxygen.

Assertion (A): UV radiation causes photodissociation of ozone into O_(2) and O, thus causing damage to the stratospheric change. Reason (R): Ozone hole is resulting in global warming and climate change.

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ICSE-ENVIRONMENTAL CHEMISTRY -OBJECTIVE (MULTIPLE CHOCIE ) TYPE QUESTIONS
  1. The presence of SO(3) to an extent of 1 ppm in air is

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  2. The major source of CO pollution is

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  3. Los Angeles smog is

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  4. Which of the following gases does not cause acid rain ?

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  5. The depletion of ozone layer

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  6. Which of the following is not a greenhouse gas ?

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  7. Identify the incorrect statement from the following

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  8. What is DDT among the following :

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  9. Which one of the following statements is not true

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  10. Which of the following statements about photochemical smog is not corr...

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  11. Which of the following is not a common component of photochemical smog...

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  12. The gas leaked from a storage tank of the Union Carbide plant in Bhopa...

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  13. Which of the following is a sink for CO?

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  14. Which oxide of nitrogen is not a common pollutant introduced into the ...

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  15. Among the following, the one that is not a greenhouse gas is :

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  16. The primary pollutant that leads to photochemical smog is :

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  17. The atmosphere between the heights 10 to 50 kilometer above the Sea le...

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  18. Excessive release of CO(2) into the atmosphere results in :

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  19. Assertion : Ozone is destroyed by CFCs in the upper stratosphere. Re...

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  20. Which is wrong with respect to our responsibility as a human being to ...

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