Current Affairs Quiz 02 September 2025
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Current Affairs Quiz 02 September 2025 For UPSC Exam
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- Question 1 of 5
1. Question
Consider the following statements about earthquakes:
1. The hypocenter is the point on the Earth’s surface directly above where the quake starts.
2. Shallow-focus earthquakes (<70 km) are generally more destructive than deeper ones.
3. Each unit rise in earthquake magnitude corresponds to nearly 32 times more energy release.
How many of the above statements are correct?CorrectCorrect Answer: B. Only two
Explanation:
• Statement 1 is incorrect: The hypocenter (focus) is the point inside the Earth where an earthquake originates. The point directly above it on the surface is the epicenter.
• Statement 2 is correct: Shallow-focus earthquakes are more destructive since the seismic energy is released close to the surface, causing greater shaking.
• Statement 3 is correct: The magnitude scale is logarithmic. A one-unit increase corresponds to about 32 times more energy release.IncorrectCorrect Answer: B. Only two
Explanation:
• Statement 1 is incorrect: The hypocenter (focus) is the point inside the Earth where an earthquake originates. The point directly above it on the surface is the epicenter.
• Statement 2 is correct: Shallow-focus earthquakes are more destructive since the seismic energy is released close to the surface, causing greater shaking.
• Statement 3 is correct: The magnitude scale is logarithmic. A one-unit increase corresponds to about 32 times more energy release. - Question 2 of 5
2. Question
Assertion (A): Despite being rare, amoebic meningoencephalitis has a high public health significance in India.
Reason (R): Its mortality rate exceeds 90%, diagnostic delay is common, and it exposes systemic gaps in rural water safety.CorrectCorrect Answer: A. Both A and R are true, and R is the correct explanation of A.
Explanation:
• Primary Amoebic Meningoencephalitis (PAM) caused by Naegleria fowleri is rare but highly fatal (mortality ~95%).
• It is often misdiagnosed as bacterial/viral meningitis → diagnostic delay.
• Outbreaks linked to untreated water highlight systemic gaps in surveillance, sanitation, and water safety in rural India.IncorrectCorrect Answer: A. Both A and R are true, and R is the correct explanation of A.
Explanation:
• Primary Amoebic Meningoencephalitis (PAM) caused by Naegleria fowleri is rare but highly fatal (mortality ~95%).
• It is often misdiagnosed as bacterial/viral meningitis → diagnostic delay.
• Outbreaks linked to untreated water highlight systemic gaps in surveillance, sanitation, and water safety in rural India. - Question 3 of 5
3. Question
CEREBO, recently in news, is primarily designed for which of the following purposes?
CorrectCorrect Answer: B. Detection of traumatic brain injuries and intracranial bleeding
Explanation:
• CEREBO = portable, non-invasive diagnostic tool using near-infrared spectroscopy + AI.
• Designed for early detection of traumatic brain injuries (TBI), especially intracranial bleeding and edema.
• A is incorrect → Not for neurodegenerative diseases like Alzheimer’s.
• C is incorrect → Not intraoperative monitoring.
• D is incorrect → It is radiation-free, unlike CT scans.IncorrectCorrect Answer: B. Detection of traumatic brain injuries and intracranial bleeding
Explanation:
• CEREBO = portable, non-invasive diagnostic tool using near-infrared spectroscopy + AI.
• Designed for early detection of traumatic brain injuries (TBI), especially intracranial bleeding and edema.
• A is incorrect → Not for neurodegenerative diseases like Alzheimer’s.
• C is incorrect → Not intraoperative monitoring.
• D is incorrect → It is radiation-free, unlike CT scans. - Question 4 of 5
4. Question
Consider the following statements about the ethical concerns of AI-generated synthetic media:
1. It can create false personal or collective memories.
2. It raises issues of consent when deceased persons’ or minors’ photos are animated without permission.
3. It can provide therapeutic support for grieving families.
How many of the above statements are correct?CorrectCorrect Answer: C. All three
Explanation:
• (1) Correct → Synthetic media can distort memory, creating false narratives.
• (2) Correct → Consent, dignity, and privacy concerns arise when deceased/minors’ images are used.
• (3) Correct → AI-generated animations may provide comfort or closure in some therapeutic contexts.IncorrectCorrect Answer: C. All three
Explanation:
• (1) Correct → Synthetic media can distort memory, creating false narratives.
• (2) Correct → Consent, dignity, and privacy concerns arise when deceased/minors’ images are used.
• (3) Correct → AI-generated animations may provide comfort or closure in some therapeutic contexts. - Question 5 of 5
5. Question
Consider the following statements regarding single-thread rivers:
1. They usually maintain a balance between bank erosion and bar accretion.
2. Their width remains relatively stable compared to multi-thread rivers.
3. They are inherently more unstable than braided rivers.
How many of the above are correct?CorrectCorrect Answer: B. Only two
Explanation:
• (1) Correct → Meandering/single-thread rivers balance erosion (outer bank) and deposition (inner bank).
• (2) Correct → Width remains relatively constant compared to braided rivers.
• (3) Incorrect → Braided rivers are more unstable, with frequent channel shifts.IncorrectCorrect Answer: B. Only two
Explanation:
• (1) Correct → Meandering/single-thread rivers balance erosion (outer bank) and deposition (inner bank).
• (2) Correct → Width remains relatively constant compared to braided rivers.
• (3) Incorrect → Braided rivers are more unstable, with frequent channel shifts.
