Which one of the following is associated with the issue of control and phasing out of the use of ozone-depleting substances?

The Montreal Protocol is a global agreement aimed at safeguarding the ozone layer by gradually eliminating the manufacture of various substances that contribute to ozone depletion.

Ozone Depletion — UPSC Previous Year Questions

Q: The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?

In the Antarctic region, the ozone hole forms due to a reaction between nitric acid in polar stratospheric clouds and chlorofluorocarbons (CFCs). This reaction leads to the formation of chlorine, which then catalyzes the photochemical destruction of ozone.

2 previous year questions • Environment & Ecology • 2011–2015

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UPSC 2011

The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?

Practice 2 UPSC previous year questions on Ozone Depletion from Environment & Ecology. These questions span from 2011 to 2015, covering key concepts frequently tested in the UPSC Civil Services Preliminary Examination. Each question includes a detailed explanation to help you understand the underlying concept.

Year-wise Distribution

2015: 1 Q2011: 1 Q

Sample Questions

The formation of ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?(UPSC 2011)
Which one of the following is associated with the issue of control and phasing out of the use of ozone-depleting substances?(UPSC 2015)