The Oceanic Trenches

Total Questions: 7

1. Match List I with List II and select the correct answer using the code given below in the lists. [I.A.S. (Pre) 2000]

List - I (Oceanic Trench)	List - II (Location)
A. Aleutian	1. Indian Ocean
B. Kermadec	2. North Pacific
C. Sunda	3. South Pacific
D. S. Sandwich	4. South Atlantic Ocean

Code	A	B	C	D
(a)	2	4	1	3
(b)	2	3	1	4
(c)	1	3	2	4
(d)	1	4	2	3

Correct Answer: (b)

Solution:Trenches and Deeps found in the Oceans asked in the question are as follows –

Indian Ocean: Sunda / Java Trench and Diamantina Trench.

North Pacific Ocean: Mariana Trench, Kuril Trench, Aleutian Trench and Japan Trench.

South Pacific Ocean: Tonga trench, Kermadec trench, Atacama trench.

North Atlantic Ocean: Puerto - Rico trench.

South Atlantic Ocean: South Sandwich trench.

Therefore, option (b) is the correct answer.

2. Which is the world's deepest trench? [U.P.P.C.S. (Pre) 1991]

(a) Northern
(b) Challenger
(c) Manhattan
(d) Richards

Correct Answer: (b) Challenger

Solution:Challenger trench is located in the Pacific Ocean, east of the Mariana Islands in the shape of an crescent. It has the deepest part of the Earth's Oceans known as Challenger-Deep in Marina Trench, named after the British exploration vessel HMS challenger.

3. Which one of the following is the deepest oceanic trench? [U.P.P.C.S. (Mains) 2015]

(a) Tonga
(b) Mariana
(c) Puerto Rico
(d) Izu Bonin

Correct Answer: (b) Mariana

Solution:Mariana Trench is located in the western Pacific Ocean, the Marina Trench is considered to be the deepest part of the Earth's surface. In fact, it is the Challenger Deep in the Mariana Trench that is known as the deepest point. Appears as a crescent-shaped scar, the trench measures around 2,550 km long, 69 km wide on average and has a maximum depth of 10.91 km at the Challenger Deep. At the same time, some other efforts measured the deepest portion at 11.034 km. The deep holes in the Mariana trench were formed due to the collision of converging plates of the oceanic lithosphere.

4. In which one of the following oceans Diamantina Trench is situated? [I.A.S. (Pre) 2006]

(a) Pacific Ocean
(b) Atlantic Ocean
(c) Indian Ocean
(d) Arctic Ocean

Correct Answer: (c) Indian Ocean

Solution:Diamantina Trench is in the Indian Ocean. It is located about
1125 km south-west from the Perth Basin. It is also known
as diamantina fracture zone.

5. Match List-I with List-II and select the correct answer from the codes given below : [U.P.P.C.S. (Mains) 2017]

List - I (Ocean)	List - II ( Deepest Point)
A. Pacific Ocean	1. Java Trench
B. Atlantic Ocean	2. Eurasian Basin
C. Indian Ocean	3. Mariana Trench
D. Arctic Ocean	4. Puerto Rico Trench

Code	A	B	C	D
(a)	4	3	1	2
(b)	3	4	1	2
(c)	3	4	2	1
(d)	2	4	3	1

Correct Answer: (b)

Solution:

(Ocean)	(Deepest Point )
Pacific Ocean	Mariana Trench
Atlantic Ocean	Puerto Rico Trench
Indian Ocean	Java (Sunda) Trench
Arctic Ocean	Eurasian Basin

6. Sunda trench lies parallel to the island of - [67ᵗʰ B.P.S.C. (Pre) 2022]

Correct Answer: (e) None of the above / More than one of the above.

Solution:Sunda Trench is a deep submarine depression in the eastern Indian Ocean that extends some 2,000 miles (3,200 km) in a northwest-southeast arc along the southwestern and southern Indonesian archipelago. It is located about 190 miles (305 km) off the southwestern coasts of the islands of Sumatra and Java, stretching eastward south of the western Lesser Sunda Islands.

7. Match List - I with List - II and select the correct answer from the code given below the lists. [U.P.P.C.S. (Pre) 2022]

List - I (Ocean)	List - II (Maximum Deepest Point)
A. Pacific	1. Sunda Trench
B. Atlantic	2. Puerto Rico Trench
C. Indian	3. Mariana Trench
D. Arctic	4. Molloy deep

Code	A	B	C	D
(a)	2	3	4	3
(b)	3	4	1	2
(c)	3	1	2	4
(d)	1	2	3	4

Correct Answer: (b)

Solution:

Ocean	Maximum Deepest Point
Pacific	Mariana Trench
Arctic	Molloy deep
Indian	Sunda Trench
Atlantic	Puerto Rico Trench

The Oceanic Trenches

1. Match List I with List II and select the correct answer using the code given below in the lists. [I.A.S. (Pre) 2000]

2. Which is the world's deepest trench? [U.P.P.C.S. (Pre) 1991]

3. Which one of the following is the deepest oceanic trench? [U.P.P.C.S. (Mains) 2015]

4. In which one of the following oceans Diamantina Trench is situated? [I.A.S. (Pre) 2006]

5. Match List-I with List-II and select the correct answer from the codes given below : [U.P.P.C.S. (Mains) 2017]

6. Sunda trench lies parallel to the island of - [67ᵗʰ B.P.S.C. (Pre) 2022]

7. Match List - I with List - II and select the correct answer from the code given below the lists. [U.P.P.C.S. (Pre) 2022]

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