Choose the correct statement:

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(B) $1$. $CFCs$ (Chlorofluorocarbons) react with ozone in the stratosphere,leading to the depletion (thinning) of the ozone layer,not thickening. Thus

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Prolonged exposure to $UV-B$ radiation can cause snow blindness and cataracts.

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(B) $1$. $CFCs$ (Chlorofluorocarbons) react with ozone in the stratosphere,leading to the depletion (thinning) of the ozone layer,not thickening. Thus,option $A$ is incorrect.$2$. $UV-B$ radiation is highly damaging to living organisms. Prolonged exposure to $UV-B$ causes inflammation of the cornea,known as snow blindness,and can also lead to cataracts. Thus,option $B$ is correct.$3$. 'Good' ozone is found in the stratosphere,which protects us from harmful $UV$ radiation. Ozone in the troposphere is considered a pollutant ('bad' ozone). Thus,option $C$ is incorrect.$4$. The Montreal Protocol was signed in $1987$ to control the emission of ozone-depleting substances,specifically $CFCs$,to protect the ozone layer. It is not primarily concerned with the greenhouse effect (which is addressed by the Kyoto Protocol). Thus,option $D$ is incorrect.

Similar Questions

Harmful ultraviolet radiations from the sun cause:

Ozone prevents the entry of $..................$.

Dobson units $(DU)$ are used to measure the thickness of:

Good ozone and bad ozone are found in $.........$ respectively.

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