Which one of the following was the objective of signing the 'Montreal Protocol'?

The ultraviolet radiations in the stratosphere are absorbed by

Explain Ozone Depletion in the Stratosphere.

Which of the following statement$(s)$ is/are correct?
$(i)$ The Montreal Protocol was signed in $1987$ and became effective in $1989$.
$(ii)$ 'Good' ozone is found in the troposphere.
$(iii)$ Ozone is formed by the action of $UV$ rays on molecular oxygen and degrades into molecular oxygen.
$(iv)$ $CFCs$ are responsible for the imbalance between the production and degradation of ozone.
$(v)$ $DNA$ and proteins of living organisms absorb $UV$ rays.

In coming years,skin-related disorders will be more common due to:

The major aerosol pollutant released by jet planes is ...