Hydrosphere - Study Mode

[#66] Which among these Islands has coral reef?
Correct Answer

(B) Hawaiian

Explanation

Solution: The state of Hawaii consists of eight larger islands (seven of which are populated), also called the Main Hawaiian Islands, and 124 small, uninhabited islands, reefs and shoals, the Northwestern Hawaiian Islands, where the majority of the Hawaiian coral reef, about 70% of it, is located.

[#67] Which river has the largest drainage basin?
Correct Answer

(D) Amazon

Explanation

Solution: The Amazon basin is the largest drainage basin in the world, with an area of approximately 7,050,000 square kilometres (2,720,000 sq mi).

[#68] Which of the following is the deepest lake?
Correct Answer

(D) Lake Baikal

Explanation

Solution: Lake Baikal in southern Russia is the world's deepest lake. It is an estimated 5,387 feet deep (1,642 meters), and its bottom is approximately 3,893 feet (1,187 meters) below sea level. Lake Baikal is also the world's largest freshwater lake in terms of volume.

[#69] The smallest amongst the following islands is ________.
Correct Answer

(C) Sumatra

Explanation

Solution: The smallest amongst the following islands is Sumatra. Sumatra, a large Indonesian island west of Java and south of the Malay Peninsula, is known for its rugged tropical terrain, wildlife and smoldering volcanoes.

[#70] An ox-bow lake is a ________
Correct Answer

(C) Lake formed due to cut off meander

Explanation

Solution: An oxbow lake is a special kind of lake that only forms next to meandering rivers. It is shaped like a crescent or a horseshoe and presents a unique ecosystem separate from the river.