The Island

11. Which of the following statements regarding barrier islands is/are cor

Which of the following statements regarding barrier islands is/are correct?

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  • 1. These are small chain of sand islands that form offshore, far from the coast.
  • 2. Lagoons or shallower marshes separate the barrier islands from the mainland.
  • 3. Such locations are hazardous for settlements because they are easily swept away by storms and hurricanes.

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1 only
1 and 2 only
2 and 3 only
1, 2 and 3
This question was previously asked in
UPSC CDS-1 – 2024
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C
Statement 1 is incorrect. Barrier islands are indeed small chains of sand islands offshore, but they are located *near* the coast, not far from it. They are separated from the mainland by a body of water or wetland.
Statement 2 is correct. Barrier islands are typically separated from the mainland by a lagoon, bay, or shallower marsh area.
Statement 3 is correct. Due to their low elevation, sandy composition, and location exposed to the open ocean, barrier islands are highly vulnerable to erosion and flooding from storms, hurricanes, and rising sea levels, making them hazardous locations for permanent settlements.
Barrier islands are dynamic landforms that constantly change shape and size due to erosion and deposition processes driven by waves, currents, and tides. They provide a natural buffer that protects the mainland coast from the full force of ocean storms.

12. Where are the Bermuda Islands located ?

Where are the Bermuda Islands located ?

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Caribbean Sea
North Atlantic Ocean
Gulf of Mexico
Mediterranean Sea
This question was previously asked in
UPSC CDS-1 – 2022
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The Bermuda Islands are located in the North Atlantic Ocean.
Bermuda is a British Overseas Territory in the North Atlantic Ocean. It is located off the east coast of the United States, roughly east-southeast of Cape Hatteras, North Carolina.
The Caribbean Sea is located further south, separating the Caribbean islands from Central and South America. The Gulf of Mexico is west of the Caribbean and south of the US. The Mediterranean Sea is located between Europe, Africa, and Asia.

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13. Which one of the following islands is of volcanic origin ?

Which one of the following islands is of volcanic origin ?

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Reunion island
Andaman & Nicobar islands
Lakshadweep islands
Maldives
This question was previously asked in
UPSC CDS-1 – 2016
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Reunion island is of volcanic origin.
– Reunion Island is an active volcanic island located in the Indian Ocean, east of Madagascar. It was formed by a volcanic hotspot.
– The Andaman & Nicobar Islands are primarily island arcs formed by the collision of the Indian and Burmese tectonic plates (part of the Sunda Arc). While volcanic activity exists in the region (e.g., Barren Island, Narcondam Island), the archipelago as a whole is not solely of volcanic origin in the same way as a hotspot island like Reunion.
– Lakshadweep Islands and Maldives are coral atolls, formed on submerged volcanic foundations but the visible landmass is due to coral growth.
Mount Piton de la Fournaise on Reunion Island is one of the world’s most active volcanoes.

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