Daily Quiz 26 July 2025
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Question 1 of 5
1. Question
1 pointsConsider the following statements regarding the Earth’s recent acceleration in rotation:
1. The Earth’s spin rate can be influenced by movements in its liquid outer core.
2. Tidal friction due to the Moon always speeds up Earth’s rotation.
3. Climate change-induced glacial melting may temporarily influence Earth’s spin rate.
Which of the statements given above is/are correct?Correct
Answer: (b)
Explanation:
- Statement 1 is correct: Movements in Earth’s liquid outer core, especially shifts in flow relative to the mantle, alter the planet’s angular momentum. This affects the speed of rotation — similar to how a spinning skater speeds up by pulling in their arms.
- Statement 2 is incorrect: Tidal friction, caused by the gravitational pull of the Moon, creates a drag on Earth’s rotation. This friction slows Earth down over geological time. Moreover, as the Moon is moving away from Earth at about 4 cm/year, the effect is a gradual lengthening of days, not shortening.
Statement 3 is correct: Glacial melting due to climate change causes mass redistribution from poles toward the equator. While this increases Earth’s equatorial bulge (oblateness) and can slow rotation, certain configurations of this redistribution can actually lead to temporary acceleration of spin due to conservation of angular momentum.
Incorrect
Answer: (b)
Explanation:
- Statement 1 is correct: Movements in Earth’s liquid outer core, especially shifts in flow relative to the mantle, alter the planet’s angular momentum. This affects the speed of rotation — similar to how a spinning skater speeds up by pulling in their arms.
- Statement 2 is incorrect: Tidal friction, caused by the gravitational pull of the Moon, creates a drag on Earth’s rotation. This friction slows Earth down over geological time. Moreover, as the Moon is moving away from Earth at about 4 cm/year, the effect is a gradual lengthening of days, not shortening.
Statement 3 is correct: Glacial melting due to climate change causes mass redistribution from poles toward the equator. While this increases Earth’s equatorial bulge (oblateness) and can slow rotation, certain configurations of this redistribution can actually lead to temporary acceleration of spin due to conservation of angular momentum.
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Question 2 of 5
2. Question
1 pointsWith reference to the Anusandhan National Research Foundation (ANRF), consider the following:
- It is a statutory body established under an Act of Parliament.
- The Prime Minister serves as its Chairperson.
- It exclusively funds research in central government institutions only.
How many of the statements given above are incorrect?
Correct
Answer: (a)
Explanation:
- Statement 1 is correct: The ANRF was set up through Anusandhan National Research Foundation Act, 2023, making it a statutory body under Indian law.
- Statement 2 is correct: The Prime Minister heads the Governing Board of ANRF. The Vice-Chairpersons include the Ministers of Science & Technology and Education.
Statement 3 is incorrect: ANRF is designed to democratize and decentralize research funding by promoting innovation in state universities, private institutions, and R&D labs, not just central government institutions. It also invites participation from retired scientists and overseas researchers.
Incorrect
Answer: (a)
Explanation:
- Statement 1 is correct: The ANRF was set up through Anusandhan National Research Foundation Act, 2023, making it a statutory body under Indian law.
- Statement 2 is correct: The Prime Minister heads the Governing Board of ANRF. The Vice-Chairpersons include the Ministers of Science & Technology and Education.
Statement 3 is incorrect: ANRF is designed to democratize and decentralize research funding by promoting innovation in state universities, private institutions, and R&D labs, not just central government institutions. It also invites participation from retired scientists and overseas researchers.
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Question 3 of 5
3. Question
1 pointsWhich of the following best explains why green methanol is emerging as the preferred decarbonisation fuel for global shipping?
Correct
Answer: (c)
Explanation:
- Green methanol is created by combining green hydrogen (produced from water electrolysis using renewable energy) with captured CO₂ from industrial sources.
- It is gaining traction in the shipping industry because it offers a 90% reduction in greenhouse gas emissions compared to traditional fuels.
- Crucially, it can be used in existing marine engines with minimal retrofitting, unlike green ammonia, which requires more safety handling and new fuel systems.
While more expensive (~$1,950/tonne vs. $560/tonne for VLSFO), it is seen as a pragmatic transitional fuel on the path to full decarbonisation by 2040–2050.
Incorrect
Answer: (c)
Explanation:
- Green methanol is created by combining green hydrogen (produced from water electrolysis using renewable energy) with captured CO₂ from industrial sources.
- It is gaining traction in the shipping industry because it offers a 90% reduction in greenhouse gas emissions compared to traditional fuels.
- Crucially, it can be used in existing marine engines with minimal retrofitting, unlike green ammonia, which requires more safety handling and new fuel systems.
While more expensive (~$1,950/tonne vs. $560/tonne for VLSFO), it is seen as a pragmatic transitional fuel on the path to full decarbonisation by 2040–2050.
-
Question 4 of 5
4. Question
1 pointsConsider the following statements:
Statement I: China and Pakistan’s growing strategic partnership presents a multi-dimensional security challenge for India.
Statement II: China supports Pakistan with advanced weapon systems, nuclear reactors, and surveillance technologies.
Statement III: Their cooperation is limited to economic domains like the China-Pakistan Economic Corridor (CPEC) and excludes military collaboration.
Which one of the following is correct in respect of the above statements?
Correct
Answer: (c)
Explanation:
- Statement I is correct: The China–Pakistan nexus involves cooperation in military, diplomatic, cyber, nuclear, and infrastructure domains, posing complex and layered challenges for India.
- Statement II is correct: China has supplied Pakistan with JF-17 jets, HQ-9/P air defence systems, missile tech, satellite navigation (BeiDou), and nuclear power plants. This deep military and tech assistance directly enhances Pakistan’s capabilities.
- Statement III is incorrect: China and Pakistan are deeply integrated militarily, conducting joint exercises, co-producing defence platforms, and engaging in intelligence sharing. Their cooperation is not limited to economics.
Only Statement II is correct and explains Statement I — it shows how China enables Pakistan militarily, increasing threats to India.
Statement III is factually wrong.Incorrect
Answer: (c)
Explanation:
- Statement I is correct: The China–Pakistan nexus involves cooperation in military, diplomatic, cyber, nuclear, and infrastructure domains, posing complex and layered challenges for India.
- Statement II is correct: China has supplied Pakistan with JF-17 jets, HQ-9/P air defence systems, missile tech, satellite navigation (BeiDou), and nuclear power plants. This deep military and tech assistance directly enhances Pakistan’s capabilities.
- Statement III is incorrect: China and Pakistan are deeply integrated militarily, conducting joint exercises, co-producing defence platforms, and engaging in intelligence sharing. Their cooperation is not limited to economics.
Only Statement II is correct and explains Statement I — it shows how China enables Pakistan militarily, increasing threats to India.
Statement III is factually wrong. -
Question 5 of 5
5. Question
1 pointsSweida, recently in news, is located in which of the following countries?
Correct
Answer: (d)
Explanation:
- Sweida (Suwayda) is a city in southwestern Syria, close to the border with Jordan.
- It is known for being the home of the Druze community, a significant religious and ethnic minority in the region.
- The city was recently in the news due to Israeli airstrikes targeting Syrian military infrastructure and pro-Iranian elements operating in the area.
Understanding the geopolitical relevance of Sweida is important for aspirants studying West Asian geopolitics and conflict zones involving Syria, Israel, and Iran.
Incorrect
Answer: (d)
Explanation:
- Sweida (Suwayda) is a city in southwestern Syria, close to the border with Jordan.
- It is known for being the home of the Druze community, a significant religious and ethnic minority in the region.
- The city was recently in the news due to Israeli airstrikes targeting Syrian military infrastructure and pro-Iranian elements operating in the area.
Understanding the geopolitical relevance of Sweida is important for aspirants studying West Asian geopolitics and conflict zones involving Syria, Israel, and Iran.
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