Ozone Layer and Ozone Hole Study 2020-22
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Questions and Answers

What is the main purpose of removing nitrogen compounds related to the impact of chlorine?

  • To exacerbate the ozone layer depletion caused by chlorine
  • To accelerate the destructive impact of chlorine
  • To neutralize the impact of chlorine on the ozone layer
  • To moderate the destructive impact of chlorine (correct)
  • What led to the potential ozone loss in the stratosphere after the 1991 Mt. Pinatubo eruption?

  • Increased atmospheric abundance of Carbon tetrachloride
  • Excessive use of Halons
  • Changes in solar cycle
  • Impact of Volcanic eruptions (correct)
  • Which compound used as a blowing agent was completely eliminated by India under the Montreal Protocol?

  • Halons
  • HFCs
  • CFC
  • HCFC 141b (correct)
  • What is the main focus of India Cooling Action Plan (ICAP) regarding cooling technology?

    <p>Enhancing energy efficiency in cooling systems</p> Signup and view all the answers

    Which protocol's targets did India surpass according to the report by the Ministry of Environment and UNDP?

    <p>Montreal Protocol</p> Signup and view all the answers

    What is the goal of India in relation to HCFC phase-out from new equipment manufacturing by December 2024?

    <p>Phase out HCFCs completely by 2030</p> Signup and view all the answers

    What percentage of Earth's ozone resides in the stratosphere?

    <p>Nearly 90%</p> Signup and view all the answers

    Which region experiences exceptionally depleted ozone in the stratosphere?

    <p>Antarctica and Arctic</p> Signup and view all the answers

    What are some major ozone-depleting substances (ODSs) mentioned in the text?

    <p>Chlorine, bromine, CFCs, carbon tetrachloride, halons</p> Signup and view all the answers

    Which process results in the destruction of ozone in the stratosphere?

    <p>Catalytic cycles</p> Signup and view all the answers

    What is the average thickness of the ozone layer over Earth as mentioned in the text?

    <p>300 Dobson Units</p> Signup and view all the answers

    What can destroy ozone in the stratosphere by providing a surface that converts benign forms of chlorine into reactive, ozone-destroying forms?

    <p>Polar Stratospheric Clouds (PSCs)</p> Signup and view all the answers

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