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Environmental Chemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryEnvironmental Chemistry1 Mark
MCQ
What happen when the destruction of the ozone layer increases?
  • ✓
    The amount of harmful ultraviolet radiation.
  • B
    The amount of needful ultraviolet radiation.
  • C
    The amount of ultra radiations.
  • D
    None of these.
✓

Answer

Correct option: A.
The amount of harmful ultraviolet radiation.
When the destruction of the ozone layer increases, the amount of harmful ultraviolet radiation increases.
Ozone layer acts as natural sun block and shields us from the $\text{UV}$ radiations of the sun which are dangerous to living organisms.
The ozone molecules absorb ultraviolet rays between $310$ to $200nm$ wavelength.
Ozone absorbs $\text{UV}$ radiation to give back oxygen. Thus, the ozone layer acts as a screen and prevents the harmful radiations from reaching the surface of earth.

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