The P Block Elements - Result Question 51

####52. About 20km above the earth, there is an ozone layer. Which one of the following statements about ozone and ozone layer is true?

[1995]

(a) ozone has a triatomic linear molecule

(b) it is harmful as it stops useful radiation

(c) it is beneficial to us as it stops U.V radiation

(d) conversion of O3 to O2 is an endothermic reaction

Show Answer

Solution:

  1. (c) Ozone layer is beneficial to us, because it stops harmful ultraviolet radiations to reach the earth.


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