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CFCs

The chlorine ...

Question

The chlorine atom released by CFCs react with ozone to destroy it.

A

False

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B

True

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Solution

The correct option is B True

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Q. Read the following statements (A - D) related to the depletion of the ozone layer by CFCs and select the correct option stating true (T) and false (F).

A. CFCs are the most damaging agents of the ozone layer.
B. Chlorine atoms are released due to the activity of UV radiation on CFCs.
C. The active chlorine converts ozone into hydrogen atoms.
D. Cl atoms are consumed in the process of degradation of ozone.

How much time does it take for one CFC molecule after it is released into the atmosphere, to destroy molecules of Ozone?

Q. In the breakdown of the ozone layer, ozone directly reacts with [1]
a) ultraviolet light
b) chlorine atoms
c) oxygen atoms
d) CFC molecules

Q. Q6. Consider the following statements
1. CFCs are Short-lived chemical compounds that eventually rise into the stratosphere; where they are broken apart by the sun’s ultraviolet radiation, releasing chlorine atoms that go on to destroy ozone molecules.
2. Tropospheric ozone protects life on the planet by absorbing potentially harmful ultraviolet radiation that can cause skin cancer and cataracts, suppress immune systems and damage plant life.
Choose the incorrect statements from the options given below

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

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