Part 1: The Himalayan River System (Questions 1–35)

​The Ganga River System

1. ​Question: What is the total length of the Ganga River in India? Answer: 2,525 km.
2. ​Question: Where does the Ganga River officially take its name? Answer: At Devprayag, after the confluence of Bhagirathi and Alaknanda.
3. ​Question: What is the origin of the Bhagirathi River? Answer: Gangotri Glacier (Gaumukh) in Uttarakhand.
4. ​Question: What is the origin of the Alaknanda River? Answer: Satopanth Glacier.
5. ​Question: At which place does the Ganga enter the plains? Answer: Haridwar.
6. ​Question: Which is the largest right-bank tributary of the Ganga? Answer: Yamuna River.
7. ​Question: Where do the Ganga and Yamuna rivers meet? Answer: Prayagraj (formerly Allahabad), Uttar Pradesh.
8. ​Question: Which tributary of the Ganga originates from the Amarkantak Plateau? Answer: Son River.
9. ​Question: Which river is known as the "Sorrow of Bihar" due to frequent flooding and course changes? Answer: Kosi River.
10. ​Question: Which river is known as the "Sorrow of Bengal"? Answer: Damodar River.
11. ​Question: Which distributary of the Ganga flows through West Bengal? Answer: Hooghly River.
12. ​Question: What name is given to the Ganga River when it enters Bangladesh? Answer: Padma.
13. ​Question: Which Ganga tributary is also known as the 'Sarda' or 'Chauka' in its upper reaches? Answer: Ghaghara River.
14. ​Question: Which river is called the "Kamla" after entering Bihar from Nepal? Answer: Kosi (system branch).
15. ​Question: Which left-bank tributary of the Ganga joins it last within Indian territory? Answer: Mahananda River.

​The Brahmaputra River System

16. ​Question: Where does the Brahmaputra River originate? Answer: Chemayungdung Glacier near Lake Mansarovar in Tibet.
17. ​Question: What is the Brahmaputra River called in Tibet? Answer: Yarlung Tsangpo.
18. ​Question: Near which mountain peak does the Brahmaputra take a sharp U-turn to enter India? Answer: Namcha Barwa.
19. ​Question: Through which gorge and Indian state does the Brahmaputra enter India? Answer: Dihang Gorge in Arunachal Pradesh.
20. ​Question: What name is given to the Brahmaputra River in Bangladesh? Answer: Jamuna.
21. ​Question: What is the combined stream of the Padma (Ganga) and Jamuna (Brahmaputra) called? Answer: Meghna.
22. ​Question: Which is the world’s largest inhabited river island, formed by the Brahmaputra in Assam? Answer: Majuli Island.
23. ​Question: Which famous tributary of the Brahmaputra is known as the "River of Blood"? Answer: Lohit River.
24. ​Question: Which tributary of the Brahmaputra flows through Bhutan before entering Assam? Answer: Manas River.
25. ​Question: Which river forms the boundary between West Bengal and Assam before joining the Brahmaputra? Answer: Sankosh River.
26. ​Question: Which tributary of the Brahmaputra is famous for its high flash floods in Arunachal Pradesh? Answer: Subansiri River.

​The Indus River System

27. ​Question: What is the total length of the Indus River? Answer: Around 3,180 km (approx. 1,114 km in India).
28. ​Question: Where does the Indus River originate? Answer: Bokhar Chu Glacier near Lake Mansarovar in Tibet.
29. ​Question: Between which two mountain ranges does the Indus River flow in Ladakh? Answer: Ladakh Range and Zanskar Range.
30. ​Question: Which is the largest tributary of the Indus River? Answer: Chenab River.
31. ​Question: What was the ancient Vedic name of the Jhelum River? Answer: Vitasta.
32. ​Question: What was the ancient Vedic name of the Ravi River? Answer: Purushni (or Iravati).
33. ​Question: Which Indus tributary originates from the Rohtang Pass in Himachal Pradesh? Answer: Ravi River.
34. ​Question: Which river flows through the famous Wular Lake in Jammu and Kashmir? Answer: Jhelum River.
35. ​Question: Which river originates from the Rakas Lake in Tibet and enters India through the Shipki La pass? Answer: Sutlej River.

​Part 2: The Peninsular River System (Questions 36–70)

​West-Flowing Rivers (Arabian Sea Drainage)

36. ​Question: Which is the longest west-flowing river in Peninsular India? Answer: Narmada River (1,312 km).
37. ​Question: Between which two mountain ranges does the Narmada River flow through a rift valley? Answer: Vindhya Range (North) and Satpura Range (South).
38. ​Question: Where does the Narmada River originate? Answer: Amarkantak Plateau in Madhya Pradesh.
39. ​Question: Where does the Tapi (Tapthi) River originate? Answer: Multai in the Betul district of Madhya Pradesh.
40. ​Question: Which river is considered the "Twin" or "Handmaid" of the Narmada? Answer: Tapi River.
41. ​Question: Which river crosses the Tropic of Cancer twice in India? Answer: Mahi River.
42. ​Question: Which unique river originates in the Aravallis and disappears into the marshy lands of the Rann of Kutch? Answer: Luni River.
43. ​Question: Which river is also known as the "Salt River" of India? Answer: Luni River.
44. ​Question: Which major river flows past Ahmedabad and drains into the Gulf of Khambhat? Answer: Sabarmati River.
45. ​Question: Which is the longest river of Kerala that flows west into the Arabian Sea? Answer: Periyar River.
46. ​Question: Which river is known as the lifeline of Goa? Answer: Mandovi River.
47. ​Question: Which river creates the famous Jog Falls (Gersoppa) in Karnataka? Answer: Sharavati River.
48. ​Question: Why do west-flowing peninsular rivers form estuaries instead of deltas? Answer: Because they flow through hard rock terrains with high velocity, leaving minimal silt.

​East-Flowing Rivers (Bay of Bengal Drainage)

49. ​Question: Which is the longest river of Peninsular India? Answer: Godavari River (1,465 km).
50. ​Question: Where does the Godavari River originate? Answer: Trimbakeshwar near Nashik in Maharashtra.
51. ​Question: Which river is widely known as 'Dakshin Ganga' or 'Vriddha Ganga'? Answer: Godavari River.
52. ​Question: Which are the major tributaries of the Godavari River? Answer: Penganga, Wainganga, Wardha, Indravati, Manjira, and Pranhita.
53. ​Question: Where does the Krishna River originate? Answer: Mahabaleshwar in Maharashtra.
54. ​Question: Which is the largest tributary of the Krishna River? Answer: Tungabhadra River.
55. ​Question: Koyna, Bhima, and Ghataprabha are tributaries of which river? Answer: Krishna River.
56. ​Question: Where does the Kaveri (Cauvery) River originate? Answer: Talakaveri in the Brahmagiri Hills of Kodagu, Karnataka.
57. ​Question: Which peninsular river maintains a perennial flow of water due to both Southwest and Northeast monsoons? Answer: Kaveri River.
58. ​Question: Where does the Mahanadi River originate? Answer: Sihawa in the Dhamtari district of Chhattisgarh.
59. ​Question: Tel, Ib, and Hasdeo are the prominent tributaries of which river? Answer: Mahanadi River.
60. ​Question: Which river flows between the Godavari and the Mahanadi deltas? Answer: Vamsadhara River.
61. ​Question: Where does the Subarnarekha River originate? Answer: Chota Nagpur Plateau in Jharkhand.
62. ​Question: Which river is known for the famous Hundru Falls? Answer: Subarnarekha River.
63. ​Question: Which river flows south of the Kaveri and passes through Madurai? Answer: Vaigai River.
64. ​Question: The Penneru (Pennar) River basin lies between which two major river systems? Answer: Krishna and Kaveri systems.

​Part 3: River Confluences, Cities, and Bridges (Questions 65–85)

​The Panch Prayag (Five Confluences)

65. ​Question: Which two rivers meet at Vishnuprayag? Answer: Alaknanda and Dhauliganga.
66. ​Question: Which two rivers meet at Nandaprayag? Answer: Alaknanda and Mandakini (Nandakini).
67. ​Question: Which two rivers meet at Karnaprayag? Answer: Alaknanda and Pindar.
68. ​Question: Which two rivers meet at Rudraprayag? Answer: Alaknanda and Mandakini.
69. ​Question: Which two rivers meet at Devprayag? Answer: Alaknanda and Bhagirathi.

​Important Cities on River Banks

70. ​Question: Delhi and Agra are located on the banks of which river? Answer: Yamuna River.
71. ​Question: Which city is located at the confluence of the Ganga and Gandak rivers? Answer: Hajipur (Bihar).
72. ​Question: On the banks of which river is Srinagar located? Answer: Jhelum River.
73. ​Question: On the banks of which river is Ayodhya located? Answer: Saryu River.
74. ​Question: Which major city of Madhya Pradesh is situated on the banks of the Khan River? Answer: Indore.
75. ​Question: On the banks of which river is Cuttack (Odisha) situated? Answer: Mahanadi River.
76. ​Question: Which city is located on the banks of the River Musi? Answer: Hyderabad.
77. ​Question: The textile hub Surat is situated along which river? Answer: Tapi River.
78. ​Question: On the banks of which river is Jabalpur situated? Answer: Narmada River.
79. ​Question: Which capital city is located on the banks of the Gomti River? Answer: Lucknow.
80. ​Question: Vijayawada is situated on the banks of which river? Answer: Krishna River.
81. ​Question: Tiruchirappalli is located on the banks of which south Indian river? Answer: Kaveri River.
82. ​Question: Which steel city is located on the banks of the Subarnarekha and Kharkai rivers? Answer: Jamshedpur.
83. ​Question: Guwahati and Dibrugarh are situated along which major river? Answer: Brahmaputra River.
84. ​Question: Kolkata is situated on the banks of which river? Answer: Hooghly River.
85. ​Question: Patna, the capital of Bihar, sits on the banks of which river? Answer: Ganga River.

​Part 4: Dams, Waterfalls, Lakes, and Special Trivia (Questions 86–100)

86. ​Question: Which is the longest dam in India and on which river is it built? Answer: Hirakud Dam on the Mahanadi River (Odisha).
87. ​Question: Which is the highest dam in India and on which river is it located? Answer: Tehri Dam on the Bhagirathi River (Uttarakhand).
88. ​Question: Bhakra Nangal Dam is constructed across which river? Answer: Sutlej River.
89. ​Question: Nagarjuna Sagar Dam is built across which river? Answer: Krishna River.
90. ​Question: The Sardar Sarovar Dam is constructed on which river? Answer: Narmada River.
91. ​Question: On which river is the Pong Dam (Beas Dam) built? Answer: Beas River.
92. ​Question: Where is the famous Dhuandhar Falls located? Answer: On the Narmada River in Bhedaghat, Jabalpur (Madhya Pradesh).
93. ​Question: Which waterfall in India is famously known as the "Niagara of India"? Answer: Chitrakote Falls on the Indravati River (Chhattisgarh).
94. ​Question: Shivanasamudra Falls is an island-waterfall system on which river? Answer: Kaveri River.
95. ​Question: Which lake in India is the largest freshwater lake, fed by the Jhelum River? Answer: Wular Lake (Jammu & Kashmir).
96. ​Question: Which lake is a famous brackish water lagoon located at the mouth of the Daya River? Answer: Chilika Lake (Odisha).
97. ​Question: What is India’s longest river bridge and over which river system is it built? Answer: Bhupen Hazarika Setu (Dhola-Sadiya Bridge) over the Lohit River (a tributary of the Brahmaputra).
98. ​Question: What was the first multipurpose river valley project in independent India? Answer: Damodar Valley Project (DVC), modeled on the Tennessee Valley Authority.
99. ​Question: Which river system forms the famous "Gersch" or dendritic drainage pattern across North India? Answer: The Ganga River System.
100. ​Question: Under the Indus Waters Treaty (1960), India has exclusive rights over which three rivers? Answer: Sutlej, Beas, and Ravi.