Current Affairs Today MCQs (1 Nov 2024)

1. What is the primary purpose of the Asset Recovery Interagency Network-Asia Pacific (ARIN-AP)?

(A) Promote international trade agreements

(B) Monitor global financial markets

(D) Facilitate cross-border asset recovery and intelligence sharing

Correct Answer!

Incorrect Answer!

The correct answer is (D) Facilitate cross-border asset recovery and intelligence sharing

ARIN-AP is a collaborative network of 28 member jurisdictions and nine observers that focuses on asset tracing, freezing, and confiscation related to proceeds of crime. It fosters intelligence-sharing to support cross-border recovery of criminal assets, enhancing global financial security.

2. When will India host the ARIN-AP Annual General Meeting?

(A) 2024

(B) 2025

(D) 2027

Correct Answer!

Incorrect Answer!

India, represented by its Directorate of Enforcement (ED), has joined the Steering Committee of ARIN-AP and will host its Annual General Meeting in 2026. This role reflects India’s active participation in global asset recovery initiatives.

3. How was the black hole in the V404 Cygni system likely formed?

(A) Through a supernova explosion

(B) By direct collapse without a supernova

(D) By accreting matter from surrounding stars

Correct Answer!

Incorrect Answer!

The correct answer is (B) By direct collapse without a supernova

The black hole in the V404 Cygni system likely formed through a “direct collapse,” where the black hole formed quietly without a supernova explosion. This spared the distant star in the system from being ejected by violent forces.

4. What is the event horizon of a black hole?

(A) The boundary beyond which nothing can escape

(B) The core where nuclear fusion occurs

(D) The center of the black hole

Correct Answer!

Incorrect Answer!

The correct answer is (A) The boundary beyond which nothing can escape

The event horizon is the boundary of a black hole where the gravitational pull is so strong that nothing, not even light, can escape. It marks the point of no return, as described in Einstein’s theory of general relativity.

5. Which type of black hole is the largest?

(A) Stellar black holes

(B) Intermediate black holes

(D) Micro black holes

Correct Answer!

Incorrect Answer!

The correct answer is (C) Supermassive black holes

Supermassive black holes (SMBH) are the largest, often found at the centers of galaxies. Examples include Sagittarius A, located at the heart of the Milky Way, which significantly impacts the galaxy’s dynamics.

6. What does LiDAR stand for?

(A) Light Imaging Detection and Ranging

(B) Laser Inspection Detection and Radar

(D) Light Detection and Ranging

Correct Answer!

Incorrect Answer!

The correct answer is (D) Light Detection and Ranging

LiDAR stands for Light Detection and Ranging. It is a remote sensing technology that uses laser pulses to measure distances and generate high-resolution, 3D models of Earth’s surface features, useful in archaeology, geography, and engineering.

7. Which of the following is NOT a primary component of LiDAR instrumentation?

(A) Laser

(B) GPS receiver

(D) Infrared telescope

Correct Answer!

Incorrect Answer!

The correct answer is (D) Infrared telescope

LiDAR instrumentation comprises a laser, a scanner, and a GPS receiver. These components work together to emit laser pulses, record reflections, and provide precise geographical data for various applications.

8. How far is the V404 Cygni system from Earth?

(A) 4,000 light-years

(B) 8,000 light-years

(D) 10,000 light-years

Correct Answer!

Incorrect Answer!

The correct answer is (B) 8,000 light-years

The V404 Cygni system, located approximately 8,000 light-years from Earth, consists of a black hole with two orbiting stars. Its study offers valuable insights into alternative black hole formation processes.

9. How does LiDAR contribute to environmental research?

(A) By enhancing satellite communications

(B) By measuring atmospheric carbon levels

(D) By providing high-resolution topographic data

Correct Answer!

Incorrect Answer!

The correct answer is (D) By providing high-resolution topographic data

LiDAR generates detailed, three-dimensional topographic maps, aiding environmental research by identifying terrain features, assessing erosion, and locating ancient structures hidden under dense vegetation.

10. What defines a black hole?

(A) A celestial body emitting intense light

(B) A massive star with strong outward radiation

(D) A rotating neutron star

Correct Answer!

Incorrect Answer!

The correct answer is (C) A region where gravity is so strong that nothing can escape

A black hole is a space region with intense gravitational pull, allowing no matter or light to escape. This phenomenon results from a massive star collapsing under its gravity when it exhausts its fuel.

11. ARIN-AP is part of which larger global network?

(A) INTERPOL Network

(B) Global CARIN Network

(D) Asia-Pacific Economic Cooperation (APEC)

Correct Answer!

Incorrect Answer!

The correct answer is (B) Global CARIN Network

ARIN-AP is a regional arm of the Global CARIN (Camden Asset Recovery Interagency Network), which focuses on tracing, freezing, and confiscating assets linked to criminal activities, enhancing international cooperation in combating financial crimes.

12. What is India’s role in ARIN-AP by 2026?

(A) Observer Member

(B) Steering Committee Member

(D) President

Correct Answer!

Incorrect Answer!

The correct answer is (D) President

India, through its Directorate of Enforcement, has joined ARIN-AP’s Steering Committee and is set to assume its presidency by 2026. This underscores India’s active engagement in combating financial crimes on a global scale.

13. What makes the V404 Cygni system unique among black hole systems?

(A) It has two orbiting black holes

(B) It has two orbiting stars with different distances

(D) It is the brightest black hole system

Correct Answer!

Incorrect Answer!

The correct answer is (B) It has two orbiting stars with different distances

V404 Cygni is unique because it features a black hole with two orbiting stars—one close, circling every 6.5 days, and another 100 times farther away. This unusual arrangement has provided insights into alternative black hole formation processes.

14. What is the significance of “direct collapse” in black hole formation?

(A) It avoids a supernova explosion

(B) It prevents the formation of neutron stars

(D) It eliminates the event horizon

Correct Answer!

Incorrect Answer!

The correct answer is (A) It avoids a supernova explosion

Direct collapse refers to the formation of a black hole without a supernova explosion. This process is significant in explaining the survival of distant stars in systems like V404 Cygni, which might otherwise be ejected by explosive forces.

15. What is the primary difference between intermediate and stellar black holes?

(A) Size and formation process

(B) Location in the galaxy

(D) Presence of an event horizon

Correct Answer!

Incorrect Answer!

The correct answer is (A) Size and formation process

Intermediate black holes are larger than stellar black holes but smaller than supermassive ones. They may form through mergers of smaller black holes, unlike stellar black holes, which result from collapsing stars.

16. Which of the following is an environmental application of LiDAR?

(A) Predicting volcanic eruptions

(B) Monitoring marine biodiversity

(D) Mapping forest density

Correct Answer!

Incorrect Answer!

The correct answer is (D) Mapping forest density

LiDAR is widely used for mapping forest density and canopy height. Its ability to create high-resolution 3D terrain models makes it valuable for monitoring deforestation, land use changes, and ecosystem conservation.

17. What does the GPS receiver in LiDAR instrumentation do?

(A) Calculates light intensity

(B) Measures object temperature

(D) Scans surrounding vegetation

Correct Answer!

Incorrect Answer!

The correct answer is (C) Records the precise location of laser pulses

The GPS receiver in LiDAR instruments helps determine the exact position of the emitted laser pulses, ensuring accurate mapping and measurement of terrain features.

18. According to Einstein’s theory, what triggers the formation of a black hole?

(A) High rotational speed

(B) Collision with another star

(D) Collapse of a massive star due to gravity

Correct Answer!

Incorrect Answer!

The correct answer is (D) Collapse of a massive star due to gravity

Black holes form when a massive star exhausts its nuclear fuel, leading to a collapse under its gravity. This creates a region of space with such intense gravity that not even light can escape.

19. How many member jurisdictions are part of ARIN-AP?

(A) 20

(B) 28

(D) 35

Correct Answer!

Incorrect Answer!

The correct answer is (B) 28

ARIN-AP includes 28 member jurisdictions and nine observers. This collaborative network facilitates cross-border efforts in asset recovery, supporting global financial integrity.

20. How was LiDAR used to discover the Mayan city in the Mexican jungle?

(A) By identifying vegetation types

(B) By analyzing soil composition

(D) By detecting ancient water systems

Correct Answer!

Incorrect Answer!

The correct answer is (C) By mapping ground elevation beneath dense forest cover

LiDAR technology was used to penetrate dense forest cover and create detailed 3D maps of ground elevation, revealing the hidden Mayan city. This demonstrates its importance in uncovering archaeological sites.

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Current Affairs Today MCQs (1 Nov 2024)

1. What is the primary purpose of the Asset Recovery Interagency Network-Asia Pacific (ARIN-AP)?

2. When will India host the ARIN-AP Annual General Meeting?

3. How was the black hole in the V404 Cygni system likely formed?

4. What is the event horizon of a black hole?

5. Which type of black hole is the largest?

6. What does LiDAR stand for?

7. Which of the following is NOT a primary component of LiDAR instrumentation?

8. How far is the V404 Cygni system from Earth?

9. How does LiDAR contribute to environmental research?

10. What defines a black hole?

11. ARIN-AP is part of which larger global network?

12. What is India’s role in ARIN-AP by 2026?

13. What makes the V404 Cygni system unique among black hole systems?

14. What is the significance of “direct collapse” in black hole formation?

15. What is the primary difference between intermediate and stellar black holes?

16. Which of the following is an environmental application of LiDAR?

17. What does the GPS receiver in LiDAR instrumentation do?

18. According to Einstein’s theory, what triggers the formation of a black hole?

19. How many member jurisdictions are part of ARIN-AP?

20. How was LiDAR used to discover the Mayan city in the Mexican jungle?