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Consider the following statements:
Increased concentration of Carbon dioxide in the atmosphere causes acid rain.
Hydro Fluoro Carbons are potent ozone depleting substances.
Increasing concentration of Sulphate aerosols can help reduce global temperatures.
Which of the statements given above is/are correct?
- a)1 and 2 only
- b)2 only
- c)1 and 3 only
- d)3 only
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements: Increased concentration of Carbo...
Explanation:
The correct answer is option D, which states that only statement 3 is correct. Let's analyze each statement to understand why.
Statement 1: Increased concentration of Carbon dioxide in the atmosphere causes acid rain.
This statement is incorrect. Acid rain is primarily caused by emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) reacting with water, oxygen, and other chemicals in the atmosphere to form various acidic compounds. Carbon dioxide (CO2) does not directly contribute to the formation of acid rain. It is a greenhouse gas that contributes to climate change but does not have a direct impact on acid rain formation.
Statement 2: Hydro Fluoro Carbons are potent ozone depleting substances.
This statement is incorrect as well. Hydrofluorocarbons (HFCs) are not ozone-depleting substances. They are a type of greenhouse gas used as replacements for chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), which were phased out due to their ozone-depleting properties. HFCs do not contain chlorine or bromine atoms that can destroy ozone molecules in the stratosphere. However, HFCs are potent greenhouse gases that contribute to global warming.
Statement 3: Increasing concentration of Sulphate aerosols can help reduce global temperatures.
This statement is correct. Sulphate aerosols, also known as sulfate aerosols, are tiny particles of sulfuric acid or sulfur dioxide suspended in the atmosphere. They are formed from the combustion of fossil fuels, volcanic eruptions, and other industrial processes.
Sulphate aerosols have a cooling effect on the Earth's climate. They reflect sunlight back into space, reducing the amount of solar radiation that reaches the Earth's surface. This phenomenon is known as the aerosol cooling effect or global dimming. It counteracts the warming effect of greenhouse gases like carbon dioxide. However, it's important to note that the cooling effect of sulphate aerosols is temporary and localized, while the warming effect of greenhouse gases is long-lasting and global.
In conclusion, out of the three given statements, only statement 3 is correct. Increased concentration of sulphate aerosols can indeed help reduce global temperatures, while the other two statements are incorrect.
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Community Answer
Consider the following statements: Increased concentration of Carbo...
Statement 1 is incorrect. Carbon dioxide on dissolving in water forms Carbonic Acid (H2CO3). However, it is a very weak acid and does not lead to acid rain. Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids with very low ph values, below 4.5.
Statement 2 is incorrect. Hydro Fluoro Carbons do not cause harm to the ozone layer, but they are potent Greenhouse gas, causing global warming, with thousands of times the warming potential of carbon dioxide. They are frequently used in air conditioning and as refrigerants, in place of the chlorofluorocarbons which cause ozone depletion.
Considering the factor that HFCs are used as substitute of HCFC and have high global warming potential, in 2016, at the summit of the United Nations Environment Programme in Kigali, Rwanda member nations signed a legally-binding accord to phase out hydro fluorocarbons (HFCs) in an amendment to the Montreal Protocol.
Statement 3 is correct. Injection of sulphate aerosols, very fine solid particles, into the stratosphere is one of the most widely discussed Geo-engineering techniques to tackle Global Warming. Sulphate aerosol particles are very good reflectors of sunlight, and it has been shown, through various climate models, that even if 1% of current incident solar radiation is reflected back in space, a very significant amount of temperature rise on earth can be offset.
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Consider the following statements: Increased concentration of Carbon dioxide in the atmosphere causes acid rain. Hydro Fluoro Carbons are potent ozone depleting substances. Increasing concentration of Sulphate aerosols can help reduce global temperatures. Which of the statements given above is/are correct?a)1 and 2 onlyb)2 onlyc)1 and 3 onlyd)3 onlyCorrect answer is option 'D'. Can you explain this answer?
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Consider the following statements: Increased concentration of Carbon dioxide in the atmosphere causes acid rain. Hydro Fluoro Carbons are potent ozone depleting substances. Increasing concentration of Sulphate aerosols can help reduce global temperatures. Which of the statements given above is/are correct?a)1 and 2 onlyb)2 onlyc)1 and 3 onlyd)3 onlyCorrect answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following statements: Increased concentration of Carbon dioxide in the atmosphere causes acid rain. Hydro Fluoro Carbons are potent ozone depleting substances. Increasing concentration of Sulphate aerosols can help reduce global temperatures. Which of the statements given above is/are correct?a)1 and 2 onlyb)2 onlyc)1 and 3 onlyd)3 onlyCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements: Increased concentration of Carbon dioxide in the atmosphere causes acid rain. Hydro Fluoro Carbons are potent ozone depleting substances. Increasing concentration of Sulphate aerosols can help reduce global temperatures. Which of the statements given above is/are correct?a)1 and 2 onlyb)2 onlyc)1 and 3 onlyd)3 onlyCorrect answer is option 'D'. Can you explain this answer?.
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