Current Affairs Quiz 01 April 2025
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Current Affairs Quiz 01 April 2025 For UPSC Exam
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- Question 1 of 5
1. Question
What is El Niño typically associated with?
CorrectAnswer: b) Warming in the central equatorial Pacific
Explanation: El Niño is a climate phenomenon characterized by the warming of sea surface temperatures in the central and eastern equatorial Pacific Ocean. This often disrupts weather patterns globally, including reducing monsoon rainfall in India, not increasing it. Cooling in the Pacific is associated with La Niña, not El Niño.
IncorrectAnswer: b) Warming in the central equatorial Pacific
Explanation: El Niño is a climate phenomenon characterized by the warming of sea surface temperatures in the central and eastern equatorial Pacific Ocean. This often disrupts weather patterns globally, including reducing monsoon rainfall in India, not increasing it. Cooling in the Pacific is associated with La Niña, not El Niño.
- Question 2 of 5
2. Question
Consider the following statements regarding the study on monsoon rainfall in the Western Ghats conducted by the Central University of Kerala:
1. The study used tree ring analysis to reconstruct monsoon patterns over the past 800 years.
2. The study found a long-term increasing trend in monsoon intensity.
3. The study specifically focused on monsoon patterns in the last 100 years.
Which of the above statements is/are correct?CorrectAnswer: a) 1 and 2 only
Explanation :
The study used tree ring analysis to reconstruct monsoon patterns over the past 800 years.
• Correct: The study used tree ring analysis to reconstruct long-term monsoon data over the past 800 years.The study found a long-term increasing trend in monsoon intensity.
• Correct: The study revealed a long-term increasing trend in monsoon intensity, particularly highlighting a shift in rainfall patterns in recent centuries.The study specifically focused on monsoon patterns in the last 100 years.
• Incorrect: The study’s focus was on a longer time scale of 800 years, not just the last 100 years.IncorrectAnswer: a) 1 and 2 only
Explanation :
The study used tree ring analysis to reconstruct monsoon patterns over the past 800 years.
• Correct: The study used tree ring analysis to reconstruct long-term monsoon data over the past 800 years.The study found a long-term increasing trend in monsoon intensity.
• Correct: The study revealed a long-term increasing trend in monsoon intensity, particularly highlighting a shift in rainfall patterns in recent centuries.The study specifically focused on monsoon patterns in the last 100 years.
• Incorrect: The study’s focus was on a longer time scale of 800 years, not just the last 100 years. - Question 3 of 5
3. Question
The Arctic Council was established by which of the following agreements?
CorrectAnswer: a) Ottawa Declaration (1996)
Explanation: The Arctic Council, an intergovernmental forum for Arctic region cooperation, was established by the Ottawa Declaration on September 19, 1996. The other options (Rio Summit, Kyoto Protocol, Paris Agreement) are related to broader environmental or climate issues, not specifically the Arctic Council.
IncorrectAnswer: a) Ottawa Declaration (1996)
Explanation: The Arctic Council, an intergovernmental forum for Arctic region cooperation, was established by the Ottawa Declaration on September 19, 1996. The other options (Rio Summit, Kyoto Protocol, Paris Agreement) are related to broader environmental or climate issues, not specifically the Arctic Council.
- Question 4 of 5
4. Question
Consider the following statements regarding the India-U.S. tri-service exercise ‘Tiger Triumph’:
1. It is primarily a maritime warfare exercise focused on enhancing naval combat operations.
2. The exercise is aimed at improving humanitarian assistance and disaster relief (HADR) coordination between India and the U.S.
3. The 2024 edition of the exercise will be held at Visakhapatnam.
Which of the above statements is/are correct?CorrectAnswer: b) 2 and 3 only
Explanation:
1. It is primarily a maritime warfare exercise focused on enhancing naval combat operations.
◦ Incorrect: ‘Tiger Triumph’ is not primarily focused on maritime warfare or naval combat operations. It is a tri-service exercise that includes the Army, Navy, and Air Force, and its primary focus is on humanitarian assistance and disaster relief (HADR) operations.
2. The exercise is aimed at improving humanitarian assistance and disaster relief (HADR) coordination between India and the U.S.
◦ Correct: The main aim of the ‘Tiger Triumph’ exercise is to enhance cooperation between the Indian and U.S. armed forces in humanitarian assistance and disaster relief (HADR), especially in response to natural disasters.
3. The 2024 edition of the exercise will be held at Visakhapatnam.
◦ Correct: The 2024 edition of the ‘Tiger Triumph’ exercise is indeed scheduled to take place in Visakhapatnam, India.IncorrectAnswer: b) 2 and 3 only
Explanation:
1. It is primarily a maritime warfare exercise focused on enhancing naval combat operations.
◦ Incorrect: ‘Tiger Triumph’ is not primarily focused on maritime warfare or naval combat operations. It is a tri-service exercise that includes the Army, Navy, and Air Force, and its primary focus is on humanitarian assistance and disaster relief (HADR) operations.
2. The exercise is aimed at improving humanitarian assistance and disaster relief (HADR) coordination between India and the U.S.
◦ Correct: The main aim of the ‘Tiger Triumph’ exercise is to enhance cooperation between the Indian and U.S. armed forces in humanitarian assistance and disaster relief (HADR), especially in response to natural disasters.
3. The 2024 edition of the exercise will be held at Visakhapatnam.
◦ Correct: The 2024 edition of the ‘Tiger Triumph’ exercise is indeed scheduled to take place in Visakhapatnam, India. - Question 5 of 5
5. Question
The phenomenon of avalanche breakdown, used in laser-based radiation detection, occurs due to:
CorrectAnswer: b) The rapid multiplication of electrons triggered by ionized particles from radioactive decay
Explanation:
a) The spontaneous breakdown of radioactive isotopes in the presence of infrared radiation.
• Incorrect: Avalanche breakdown is not related to the spontaneous breakdown of radioactive isotopes or infrared radiation. It is a process in electronics, not a radioactive phenomenon.
b) The rapid multiplication of electrons triggered by ionized particles from radioactive decay.
• Correct: Avalanche breakdown occurs when an electron or ion is accelerated by a strong electric field, causing it to collide with atoms, leading to the generation of more electrons. This cascade effect is triggered by ionized particles, often in radiation detection systems.
c) The direct absorption of radiation by a laser beam, which amplifies the decay signal.
• Incorrect: This describes laser amplification, but it’s not related to avalanche breakdown. Avalanche breakdown involves electron multiplication rather than radiation absorption by the laser beam.
d) The self-ionization of air molecules due to background cosmic radiation.
• Incorrect: Avalanche breakdown is a phenomenon related to the rapid multiplication of electrons in materials like semiconductors, not self-ionization of air molecules.IncorrectAnswer: b) The rapid multiplication of electrons triggered by ionized particles from radioactive decay
Explanation:
a) The spontaneous breakdown of radioactive isotopes in the presence of infrared radiation.
• Incorrect: Avalanche breakdown is not related to the spontaneous breakdown of radioactive isotopes or infrared radiation. It is a process in electronics, not a radioactive phenomenon.
b) The rapid multiplication of electrons triggered by ionized particles from radioactive decay.
• Correct: Avalanche breakdown occurs when an electron or ion is accelerated by a strong electric field, causing it to collide with atoms, leading to the generation of more electrons. This cascade effect is triggered by ionized particles, often in radiation detection systems.
c) The direct absorption of radiation by a laser beam, which amplifies the decay signal.
• Incorrect: This describes laser amplification, but it’s not related to avalanche breakdown. Avalanche breakdown involves electron multiplication rather than radiation absorption by the laser beam.
d) The self-ionization of air molecules due to background cosmic radiation.
• Incorrect: Avalanche breakdown is a phenomenon related to the rapid multiplication of electrons in materials like semiconductors, not self-ionization of air molecules.
