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The CFCs are used in refrigerators, air ...

The CFCs are used in refrigerators, air conditioners, in the production of plastic foam etc. Which of the following statements are correct ?

A

The CFCs are responsible for the depletion of the ozone layer.

B

The CFCs get broken down by powerful UV radiations in the stratosphere, releasing chlorine free radical
`CF_(2)Cl_(2)(g) overset(UV)to overset(square)Cl(g) +overset(square)CF_(2)Cl(g)`

C

The chlorine radical then reacts with stratosphere ozone to form chlorine monoxide radicals and molecular oxygen
`overset(square)Cl(g) +O_(2) to Cloverset(square)O(g) +O_(2)(g)`

D

Reaction of chlorine monoxide radical with atomic oxygen produces more chlorine radicals
`Cloverset(square)O(g) +O(g) to overset(square)Cl(g) +O_(2)(g)`

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  2. Photochemical smog :

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  3. The common components of photochemical smog besides ozone and nitric o...

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  4. Photochemical smog causes serious health problems such as :

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  5. Photochemical smog leads to :

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  9. Which of the following chemicals cause depletion of the ozone layer ?

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  10. CFCs or freons : I. are highly reactive II. Non flammable ...

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  11. The CFCs are used in refrigerators, air conditioners, in the productio...

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  12. In 1980s atmospheric scientists working in Antarctica reported about d...

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