1
Question
Q. Which of the following gases can have a direct effect on the ozone layer and also cause global warming?
1. Hydrofluorocarbons
2. Chlorofluorocarbons
3. Carbon dioxide
4. Hydrochlorofluorocarbons
5. SF6
Select the correct answer using the code given below:
Q. निम्नलिखित में से कौन सी गैस ओजोन परत पर सीधा प्रभाव डाल सकती है और ग्लोबल वार्मिंग का कारण भी बन सकती है?
1. हाइड्रोफ्लोरोकार्बन
2. क्लोरोफ्लोरोकार्बन
3. कार्बन डाइऑक्साइड
4. हाइड्रोक्लोरोफ्लोरोकार्बन
5. ऐस ऍफ़ 6 (SF6)
नीचे दिए गए कोड का उपयोग करके सही उत्तर चुनें
Q. Which of the following gases can have a direct effect on the ozone layer and also cause global warming?
1. Hydrofluorocarbons
2. Chlorofluorocarbons
3. Carbon dioxide
4. Hydrochlorofluorocarbons
5. SF6
Select the correct answer using the code given below:
Q. निम्नलिखित में से कौन सी गैस ओजोन परत पर सीधा प्रभाव डाल सकती है और ग्लोबल वार्मिंग का कारण भी बन सकती है?
1. हाइड्रोफ्लोरोकार्बन
2. क्लोरोफ्लोरोकार्बन
3. कार्बन डाइऑक्साइड
4. हाइड्रोक्लोरोफ्लोरोकार्बन
5. ऐस ऍफ़ 6 (SF6)
नीचे दिए गए कोड का उपयोग करके सही उत्तर चुनें
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Solution
The correct option is C
2 and 4 only
केवल 2 और 4
Statement 1 is incorrect: HFCs or hydrofluorocarbons, are super greenhouse gases, manufactured for use in refrigeration, air conditioning, foam blowing, aerosols, fire protection and solvents. Hydrofluorocarbons have no direct effect on ozone depletion. So, it is used as a substitute for Ozone depleting substances like Chlorofluorocarbons (CFCs) and are used in refrigerators and air-conditioners.
Statement 2 is correct:
CFCs are highly potent greenhouse gases and also it is ozone depleting substances. Due to its ozone depleting potential, there was consensus for curbing the production of CFCs. Montreal Protocol, helped in successfully curbing the production of chlorofluorocarbons and other ODSs and significantly contributed to the repair of the ozone hole.
Statement 3 is incorrect: Carbon dioxide has global warming potential but no direct effect on ozone layer depletion, though it has very less indirect effect.
Statement 4 is correct: Hydrochlorofluorocarbons has high global warming potential as well as one of the factors for ozone layer depletion. Chlorine is present in this material, so it has direct effect on ozone layer depletion.
Option 5 is incorrect: Sulphur Hexafluoride (SF6) has high global warming potential but no direct effect on ozone layer depletion. Chlorine is not present in this material, so it has no direct effect on ozone layer depletion
2 and 4 only
केवल 2 और 4
Statement 1 is incorrect: HFCs or hydrofluorocarbons, are super greenhouse gases, manufactured for use in refrigeration, air conditioning, foam blowing, aerosols, fire protection and solvents. Hydrofluorocarbons have no direct effect on ozone depletion. So, it is used as a substitute for Ozone depleting substances like Chlorofluorocarbons (CFCs) and are used in refrigerators and air-conditioners.
Statement 2 is correct:
CFCs are highly potent greenhouse gases and also it is ozone depleting substances. Due to its ozone depleting potential, there was consensus for curbing the production of CFCs. Montreal Protocol, helped in successfully curbing the production of chlorofluorocarbons and other ODSs and significantly contributed to the repair of the ozone hole.
Statement 3 is incorrect: Carbon dioxide has global warming potential but no direct effect on ozone layer depletion, though it has very less indirect effect.
Statement 4 is correct: Hydrochlorofluorocarbons has high global warming potential as well as one of the factors for ozone layer depletion. Chlorine is present in this material, so it has direct effect on ozone layer depletion.
Option 5 is incorrect: Sulphur Hexafluoride (SF6) has high global warming potential but no direct effect on ozone layer depletion. Chlorine is not present in this material, so it has no direct effect on ozone layer depletion
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