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GeographyEasyAsked in: CDS · CDS-II 2020, GK

Which one of the following is considered as the deepest point of the oceans?

  1. A.Tonga Trench
  2. B.Mariana Trench
  3. C.Philippine Trench
  4. D.Kermadec Trench

Correct answer

B. Mariana Trench

Explanation

The correct answer is B, Mariana Trench. Its Challenger Deep, about 10,900 metres (nearly 11 km) below sea level, is the deepest known point of the oceans.

The Mariana Trench lies in the western Pacific Ocean, east of the Mariana Islands near Guam. It is a subduction trench where the old, heavy Pacific plate sinks beneath the smaller Mariana plate. The Challenger Deep is named after the British survey ship HMS Challenger, whose 1875 expedition first sounded the area. Jacques Piccard and Don Walsh reached the bottom in the bathyscaphe Trieste in 1960. Mount Everest placed in the Challenger Deep would still be covered by over two kilometres of water.

A is wrong because the Tonga Trench, at about 10,800 metres, is the second deepest but not the deepest. C is wrong because the Philippine Trench, about 10,500 metres deep, is shallower than the Mariana. D is wrong because the Kermadec Trench, north of New Zealand, is about 10,000 metres deep.

Exam tip: Deepest point = Challenger Deep, Mariana Trench, Pacific; deepest in the Atlantic = Puerto Rico Trench; in the Indian Ocean = Java (Sunda) Trench.

Practice Questions

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Q1.GeographyAsked in: CDS · CDS-II 2024, GKHard

Which of the following pairs of Himalayan Glaciers and their location is/are correctly matched?

1. Siachen - Nubra Valley Region

2. Chungphar - Kumaon-Garhwal Region

3. Zemu - Central Nepal Region

4. Gasherbrum - Pir Panjal Range

Select the answer using the code given below :

  1. A.1 only
  2. B.1 and 2
  3. C.2 and 3
  4. D.3 and 4
Show answer
Correct answer: A. 1 only

Only the Siachen pair is correct. The Siachen Glacier, about 76 km long, lies in the eastern Karakoram, and its meltwater gives rise to the Nubra river, which joins the Shyok; the Nubra Valley of Ladakh lies below its snout, so the glacier belongs to the Nubra Valley region.

Q2.GeographyAsked in: CDS · CDS-II 2025, GKEasy

Indore city in Madhya Pradesh is situated in which one of the following regions ?

  1. A.Bundelkhand
  2. B.Mahakoshal
  3. C.Malwa Plateau
  4. D.Nimar Region
Show answer
Correct answer: C. Malwa Plateau

Indore stands on the Malwa Plateau in western Madhya Pradesh. Malwa is a volcanic upland of basalt rock, part of the Deccan Traps, lying north of the Vindhya Range; its black soil supports soybean, wheat and cotton, and the region also takes in Ujjain, Dewas, Ratlam and Mandsaur.

Q3.GeographyAsked in: CDS · CDS-II 2016, GKHard

With regard to water transportation in India, which of the following statements are correct?

1. Headquarters of Central Inland Water Transport Corporation is located at Delhi.

2. Headquarters of Inland Waterways Authority of India is located at Noida.

3. National Inland Navigation Institute is located at Kolkata.

4. First National Inland Waterway was between Haldia and Allahabad.

Select the correct answer using the code given below.

  1. A.1 and 2 only
  2. B.2 and 3
  3. C.2 and 4 only
  4. D.1, 2 and 4
Show answer
Correct answer: C. 2 and 4 only

Statements 2 and 4 are correct, while statements 1 and 3 name the wrong city. The Inland Waterways Authority of India (IWAI), set up in 1986, has its headquarters at Noida in Uttar Pradesh and develops and regulates the national waterways.

Q4.GeographyAsked in: CDS · CDS-I 2017, GKEasy

Which one of the following statements with regard to the Indian Railways is not correct?

  1. A.The Indian rail networks have been developed throughout the Konkan coast.
  2. B.There is very low density of railway lines in the Himalayan region.
  3. C.The north Indian plain has a dense network of railway.
  4. D.At present, India has the largest railway network in the world.
Show answer
Correct answer: D. At present, India has the largest railway network in the world.

India does not have the largest railway network in the world; the United States has the longest, followed by China and Russia, with India in fourth place.

Q5.GeographyAsked in: CDS · CDS-II 2017, GKMedium

Statement I : The interior part of Maharashtra does not receive adequate rain in the summer season.

Statement II : The interior part of Maharashtra lies in the rain shadow of the Western Ghats.

  1. A.Both the statements are individually true and Statement II is the correct explanation of Statement I
  2. B.Both the statements are individually true but Statement II is not the correct explanation of Statement I
  3. C.Statement I is true but Statement II is false
  4. D.Statement I is false but Statement II is true
Show answer
Correct answer: A. Both the statements are individually true and Statement II is the correct explanation of Statement I

Both statements are true, and the rain shadow of the Western Ghats is exactly why interior Maharashtra gets little rain.