MCQ on Indian River System Set -3
Q21. Which of the following is the largest river in the Himalayan drainage system by length?
A. Ganga
B. Indus
C. Brahmaputra
D. Narmada
Answer –B. Indus
Explanation-The Indus River is the largest river in the Himalayan drainage system by length, with a length of over 2,900 kilometers.
Q22. Which one of the following rivers flows in a rift valley?
A. The Son
B. The Yamuna
C. The Narmada
D. The Luni
Answer –C. The Narmada
Explanation-The Narmada River, also called the Reva and previously also known as Narbada or anglicised as Nerbudda, is the 5th longest river and overall longest west-flowing river in India. It is also the largest flowing river in the state of Madhya Pradesh.
Q23. Which of the following is the most common type of feature found in the Himalayan drainage system?
A. Gorges
B. V-shaped valleys
C. Rapids
D. Waterfalls
Answer –A. Gorges
Explanation-Gorges are the most common type of feature found in the Himalayan drainage system. These are deep, narrow valleys that are carved out by the erosional activity of rivers.
Q24. Which of the following is the most common type of feature found in the plains of the Himalayan drainage system?
A. Flat valleys
B. Ox-bow lakes
C. Flood plains
D. Braided channels
Answer –C. Flood plains
Explanation-Flood plains are the most common type of feature found in the plains of the Himalayan drainage system. These are flat, low-lying areas that are prone to flooding.
Q25. Which of the following is the most common type of feature found near the river mouths of the Himalayan drainage system?
A. Deltas
B. Estuaries
C. Lagoons
D. Barrier islands
Answer –A. Deltas
Explanation-Deltas are the most common type of feature found near the river mouths of the Himalayan drainage system. These are fan-shaped deposits of sediment that are formed where a river meets the sea.
Q26. Which of the following rivers is known as the “sorrow of Bihar”?
A. Ganga
B. Indus
C. Brahmaputra
D. Kosi
Answer –D. Kosi
Explanation-The Kosi River is known as the “sorrow of Bihar” because it has a tendency to change its course frequently. This has caused widespread flooding and devastation in the region.
Q27. Which river is believed to have traversed the entire longitudinal extent of the Himalayas during the Miocene period?
A. Indus
B. Ganga
C. Brahmaputra
D. Shiwalik
Answer –D. Shiwalik
Explanation- According to geologists, a mighty river called Shiwalik or Indo-Brahma is believed to have traversed the entire longitudinal extent of the Himalayas during the Miocene period.
Q28. The dismemberment of the Indo-Brahma River resulted in the formation of how many main drainage systems?
A. 1
B. 2
C. 3
D. 4
Answer –C. 3
Explanation-The Indo-Brahma river was dismembered into three main drainage systems: the Indus and its five tributaries in the western part, the Ganga and its Himalayan tributaries in the central part, and the stretch of the Brahmaputra in Assam and its Himalayan tributaries in the eastern part.
Q29. The diversion of the Ganga and Brahmaputra systems towards the Bay of Bengal was caused by:
A. Uplift of the Potwar Plateau
B. Pleistocene upheaval in the western Himalayas
C. Down thrusting of the Malda gap area
D. All of the above
Answer –D. All of the above
Explanation-The down thrusting of the Malda gap area between the Rajmahal hills and the Meghalaya plateau, along with the Pleistocene upheaval in the western Himalayas and the uplift of the Potwar Plateau, caused the diversion of the Ganga and Brahmaputra systems to flow towards the Bay of Bengal.
Q30. What evidence supports the viewpoint of the existence of the Shiwalik River and its dismemberment?
A. Fossil remains found in the Shiwalik region
B. Presence of lacustrine origin and alluvial deposits
C. Geological surveys conducted in the Himalayas
D. Historical records of ancient river courses
Answer –B. Presence of lacustrine origin and alluvial deposits
Explanation-The remarkable continuity of the Shiwalik and its lacustrine origin, as well as the presence of alluvial deposits consisting of sands, silt, clay, boulders, and conglomerates, support the viewpoint of the existence of the Shiwalik River and its subsequent dismemberment.
