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UPSC Assistant Commandant Rivers — practice questions

Explore 141 free Rivers questions in UPSC Assistant Commandant Geography. Open each question or exercise to read its content, reference answers and available explanation.

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Rivers questions and exercises with answers

Showing questions 1–30 of 141.

Which of the following countries are well known as the two largest cocoa producers in the world?Read the answer and worked solution →The longest border between any two countries in the world is between :Read the answer and worked solution →Which one of the following is the best example of repeated falls in sea level, giving rise to present-day extensive marshland?Read the answer and worked solution →Ilmenite and rutile, abundantly available in certain coastal tracts of India, are rich sources of which one of the following?Read the answer and worked solution →About three-fourths of world's cobalt, a metal required for the manufacture of batteries for electric motor vehicles, is produced byRead the answer and worked solution →Which one of the following is a part of the Congo Basin?Read the answer and worked solution →Which one of the following countries has been suffering from decades of civil strife and food shortages and was in news in the recent past for its very severe famine?Read the answer and worked solution →Which one of the following lakes of West Africa has become dry and turned into a desert?Read the answer and worked solution →Gandikota canyon of South India was created by which one of the following rivers?Read the answer and worked solution →In the northern hemisphere, the longest day of the year normally occurs in the:Read the answer and worked solution →Which one of the following statements is correct?Read the answer and worked solution →The black cotton soil of India has been formed due to the weathering ofRead the answer and worked solution →Siachen Glacier is situated to theRead the answer and worked solution →On 21st June, the SunRead the answer and worked solution →What is common to the places known as Aliyar, Isapur and Kangsabati?Read the answer and worked solution →Why are dewdrops not formed on a cloudy night?Read the answer and worked solution →Among the following cities, which one lies on a longitude closest to that of Delhi?Read the answer and worked solution →Which one of the following is an artificial lake?Read the answer and worked solution →Which of the following is not a member of 'Gulf Cooperation Council'?Read the answer and worked solution →Recently, linking of which of the following rivers was undertaken?Read the answer and worked solution →What explains the eastward flow of the equatorial counter-current?Read the answer and worked solution →The area known as 'Golan Heights' sometimes appears in the news in the context of the events related toRead the answer and worked solution →Which one of the following countries of South-West Asia does not open out to the Mediterranean Sea?Read the answer and worked solution →In India, in which one of the following types of forests is teak a dominant tree species?Read the answer and worked solution →Turkey is located betweenRead the answer and worked solution →Variations in the length of daytime and nighttime from season to season are due toRead the answer and worked solution →On the planet earth, most of the freshwater exists as ice caps and glaciers. Out of the remaining freshwater, the largest proportionRead the answer and worked solution →The most important fishing grounds of the world are found in the regions whereRead the answer and worked solution →Which one among the following industries is the maximum consumer of water in India?Read the answer and worked solution →Which one of the following is the characteristic climate of the Tropical Savannah Region?Read the answer and worked solution →

Worked practice questions

Which of the following countries are well known as the two largest cocoa producers in the world?

  1. Algeria and Morocco
  2. Botswana and Namibia
  3. Côte d'Ivoire and Ghana
  4. Madagascar and Mozambique
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Correct answer: C. Côte d'Ivoire and Ghana

Answer: C. Côte d'Ivoire and Ghana are the world's two largest cocoa producers. Côte d'Ivoire alone produces about 40% of global cocoa, and Ghana about 20% — together over 60% of world output. The cocoa belt lies in West Africa within ~10° of the equator, where high humidity and steady temperatures suit Theobroma cacao. The other options name regions that produce little or no cocoa: Algeria/Morocco (Mediterranean climate), Botswana/Namibia (semi-arid), Madagascar/Mozambique (modest cocoa production but not top-two). Source: ICCO (International Cocoa Organisation) production statistics.

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The longest border between any two countries in the world is between :

  1. Canada and the United States of America
  2. Chile and Argentina
  3. China and India
  4. Kazakhstan and Russian Federation
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Correct answer: A. Canada and the United States of America

Answer: A. The longest border between any two countries is between CANADA and the USA. The Canada-United States border is approximately 8,891 km long (including the Alaska-Canada border of about 2,475 km). It is the longest international land border in the world. Distractors: (B) Chile-Argentina border is about 5,300 km long (the second longest in the Americas) but shorter than Canada-USA. (C) China-India border (LAC) is about 3,488 km long. (D) Kazakhstan-Russia border is about 7,644 km, the second longest international border in the world but still less than Canada-USA. Source: syllabus Fundamentals of Physical Geography / CIA World Factbook border statistics.

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Which one of the following is the best example of repeated falls in sea level, giving rise to present-day extensive marshland?

  1. Bhitarkanika Mangroves
  2. Marakkanam Salt Pans
  3. Naupada Swamp
  4. Rann of Kutch
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Correct answer: D. Rann of Kutch

Answer: D. The Rann of Kutch is the best example of repeated sea-level falls forming present-day marshland. The Great Rann of Kutch and Little Rann are salt marshes (about 30,000 sq km combined) in Gujarat, formed by REPEATED MARINE TRANSGRESSIONS AND REGRESSIONS over geological time. The area was a shallow sea/gulf, was uplifted with eustatic sea-level falls, and now stands as low-elevation saline marshland flooded annually during monsoon. The Rann is the world's largest salt desert. Distractors fail: (A) Bhitarkanika Mangroves (Odisha) are deltaic mangrove forests in active Brahmani-Baitarani delta, not the result of repeated sea-level falls. (B) Marakkanam Salt Pans (Tamil Nadu) are anthropogenic — man-made salt pans, not natural marshland. (C) Naupada Swamp (Andhra Pradesh) is a deltaic swamp from sediment deposition, not eustatic regression. Source: syllabus India: Physical Environment / Geological Survey of India.

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