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Ozone saves the biosphere by absorbing t...

Ozone saves the biosphere by absorbing the high energy radiation called:

A

Infra-red rays

B

Ultraviolet rays

C

X-rays

D

Gamma rays

Text Solution

Verified by Experts

The correct Answer is:
B
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When heathly earth's stratosphere contains a low concentration of ozone (O_(3)) that absorbs potentially harmful ultraviolet (UV) radiations by the cycle shown below: Chloroflouro carbon refrigerants, such as freon 12(CF_(2)Cl_(2)) , are stable in lower atmosphere but in the stratosphere, they absorb high energy UV radiation to generate chlorine radicals. CF_(2)Cl_(2) overset(hv)(to) CF_(2)Cl+Cl The presence of small number of chlorine radicals appears to lower ozone concentrations dramatically. The following reactions are all known to be exothermic (except the one requiring light) and to have high rate constant. A:Cl-O-O-Cloverset(hv)(to)O_(2)+2Cl^(*) B: Cl_O^(*)+O to O_(2)+Cl^(*) C:Cl^(*)+O_(3) to Cl-O^(*)+O_(2) D:2Cl-O^(*) to Cl-O-O-Cl Q. Ozone has the ability to absorb

The ozone layer absorbs