Question

Read the following statements. Which set of the statements is correct?
(i) Ozone in found mostly in the stratosphere.
(ii) Ozone layer lies 55-75 kms above the surface of the Earth.
(iii) Ozone absorbs ultraviolet radiation from the Sun.
(iv) Ozone layer has no significance for life on the Earth.
(a) (i) and (iii) (b) (ii) and (iv) (c) (ii) and (iii) (d) (i) and (iv)

Answer 1

Answer:

(b) (ii) and (iv)

i hope it's help to you

Answer 2

(a) (i) and (iii)

Explanation:

The ozone layer or ozonosphere contains relatively high concentrations of ozone (O3) molecules. Approximately 90% of atmospheric ozone occurs in the stratosphere, which extends from 10-18 km to 50 km above the earth's surface. The ozone layer protects us from the harmful effects of the ultraviolet radiations of the sun by blocking these UV rays. Without the ozone layer, these UV rays would reach the Earth's surface and cause injury and may even kill most living things.