Which of the following statements are correct about the deposits of 'methane hydrate'?
1. Global warming might trigger the release of methane gas from these deposits.
2. Large deposits of 'methane hydrate' are found in Arctic Tundra and under the seafloor.
3. Methane in atmosphere oxidizes to carbon dioxide after a decade or two.

Select the correct answer using the code given below.

1 and 2 only

2 and 3 only

1 and 3 only

1, 2 and 3

APEDIA

UPSC Prelims

2019 • 02 Jun, 2019 • Paper-1

Which of the following statements are correct about the deposits of 'methane hydrate'?
1. Global warming might trigger the release of methane gas from these deposits.
2. Large deposits of 'methane hydrate' are found in Arctic Tundra and under the seafloor.
3. Methane in atmosphere oxidizes to carbon dioxide after a decade or two.

Select the correct answer using the code given below.

Correct Answer

1, 2 and 3

Statement 1 Analysis: This is a major scientific concern. Methane hydrates are ice-like structures that trap methane. As ocean temperatures rise due to global w......

💡 Analysis & Explanation

Statement 1 Analysis ▼

This is a major scientific concern. Methane hydrates are ice-like structures that trap methane. As ocean temperatures rise due to global warming, these structures destabilize, potentially releasing massive amounts of methane into the atmosphere.

Statement 2 Analysis ▼

This is factually correct. The specific low-temperature and high-pressure conditions required to form methane hydrates exist predominantly in the permafrost of the Arctic tundra and within the sediments beneath deep ocean floors.

Statement 3 Analysis ▼

This is chemically correct. Methane is a potent short-lived climate pollutant. Its atmospheric lifetime is roughly 9 to 12 years, after which it reacts with hydroxyl radicals and gradually oxidizes to form carbon dioxide and water vapor.

Conclusion ▼

All three statements are accurate, making option D the correct choice.

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