1.

Which of the following free radicals is responsible for causing break down of ozone into oxygen due to use of CFCs ?A. OB. ClC. `CH_(3)`D. OH

Answer» Correct Answer - B
` CF_(2) Cl_(2) overset ("UV") to overset (.) Cl + CF_(2)overset (.)Cl overset (.)Cl + O_(3) to ClO + O_(2) , ClO + O to Cl +O_(2)`
The chlorine radicals are continuosly regenerated and cause the break down of ozone .


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