Static Quiz 16 April 2025 (Environment)
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Static Quiz 16 April 2025 (Environment) For UPSC Exam
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1. Question
Consider the following statements:
1. It requires paddy fields to be flooded to control weed growth.
2. It enhances the soil organic matter.
3. It poses a challenge to methane mitigation.
Which of the statements given above is/are correct?CorrectCorrect Answer: (c) 2 only
Explanation:
• Statement 1 : SRI does not require continuous flooding; it promotes alternate wetting and drying.
• Statement 2 : SRI encourages the use of compost and promotes microbial activity → increases soil organic matter.
• Statement 3 : SRI actually reduces methane emissions by avoiding anaerobic (flooded) conditions.IncorrectCorrect Answer: (c) 2 only
Explanation:
• Statement 1 : SRI does not require continuous flooding; it promotes alternate wetting and drying.
• Statement 2 : SRI encourages the use of compost and promotes microbial activity → increases soil organic matter.
• Statement 3 : SRI actually reduces methane emissions by avoiding anaerobic (flooded) conditions. - Question 2 of 5
2. Question
Which one of the following makes a tool with a shining surface obtained by rubbing it with dried seeds and which is also used in steel production?
CorrectCorrect Answer: (c) Manganese ore
Explanation:
• Manganese ore is shiny and used to make hard, shining tools.
• It is crucial in steel production as an alloying element.
• Bauxite = aluminum ore; Hematite = iron ore; Mica = insulator and shiny, but not for steel.IncorrectCorrect Answer: (c) Manganese ore
Explanation:
• Manganese ore is shiny and used to make hard, shining tools.
• It is crucial in steel production as an alloying element.
• Bauxite = aluminum ore; Hematite = iron ore; Mica = insulator and shiny, but not for steel. - Question 3 of 5
3. Question
Consider the following statements:
1. Unlike slow-evolving drought, flash drought occurs when low precipitation is accompanied by abnormally high temperatures.
2. Flash droughts can be caused both due to breaks in the monsoon or delayed onset of the summer monsoon rainfall.
Which of the statements given above is/are correct?CorrectCorrect Answer: (c) Both 1 and 2
Explanation:
• Statement 1 : Flash droughts occur rapidly due to rainfall deficit + high temperature.
• Statement 2 : Breaks in monsoon or delayed onset of monsoon can trigger flash droughts.IncorrectCorrect Answer: (c) Both 1 and 2
Explanation:
• Statement 1 : Flash droughts occur rapidly due to rainfall deficit + high temperature.
• Statement 2 : Breaks in monsoon or delayed onset of monsoon can trigger flash droughts. - Question 4 of 5
4. Question
Recently, Diatom Test was seen in the news. In this context, consider the following statements:
1. They are single-celled algae found in an aquatic environment.
2. They are one of the largest primary producers of oxygen on our planet.
3. They are also used as bio-indicators.
Which of the statements given above are correct?CorrectCorrect Answer: (c) 1, 2 and 3
Explanation:
• Statement 1 : Diatoms are microscopic algae found in freshwater and marine environments.
• Statement 2 : They produce nearly 20–30% of global oxygen through photosynthesis.
• Statement 3 : Used in forensic science and environmental monitoring as bio-indicators.IncorrectCorrect Answer: (c) 1, 2 and 3
Explanation:
• Statement 1 : Diatoms are microscopic algae found in freshwater and marine environments.
• Statement 2 : They produce nearly 20–30% of global oxygen through photosynthesis.
• Statement 3 : Used in forensic science and environmental monitoring as bio-indicators. - Question 5 of 5
5. Question
Consider the following statements regarding the ‘Climate Clock’ unveiled in New York City:
1. It displays the growing percentage of world energy that is currently supplied from renewable sources in green colour.
2. It is created by the United Nations Environment Programme (UNEP).
Which of the statements given above is/are correct?CorrectCorrect Answer: (a) 1 only
Explanation:
• Statement 1 : The Climate Clock displays renewable energy % in green and time left to 1.5°C warming in red.
• Statement 2 : It was created by artists and climate activists, not by UNEP.IncorrectCorrect Answer: (a) 1 only
Explanation:
• Statement 1 : The Climate Clock displays renewable energy % in green and time left to 1.5°C warming in red.
• Statement 2 : It was created by artists and climate activists, not by UNEP.
