Rivers and Lakes of India

The governing concept is river confluence and the change of a river’s name after two streams unite. Chandra and Bhaga are separate Himalayan streams of the Lahaul region in Himachal Pradesh. They meet at Tandi near Keylong. The combined stream is called the Chandrabhaga, a name formed from Chandra and Bhaga. Farther downstream, after the river enters the Jammu region, it is commonly known as the Chenab. Thus option B is correct for the name immediately after the confluence. Sutlej, Beas, and Ravi are separate rivers of the Indus drainage system and are not the name formed by joining Chandra and Bhaga. The wording asks specifically for the post-confluence name, not the later name Chenab.

The governing concept is the identification of a river’s source. The Beas is a Himalayan river whose traditional source is associated with Beas Kund, a high-altitude glacial source near Rohtang Pass in Himachal Pradesh. From there it flows through Himachal Pradesh and later joins the Sutlej, making it part of the Indus drainage system. Option A is therefore correct. Rakshastal and Mansarovar belong to the source region of other major Himalayan rivers, especially the Sutlej and the Indus system, and are not the recognised source of the Beas. Talakaveri is in Karnataka and is associated with the origin of the Kaveri in the Western Ghats. The locations and river associations clearly eliminate the other three choices.

The correct answer is the Chamba region. The Ravi is a major western Himalayan river associated with Himachal Pradesh, particularly the Chamba area, where its upper course and source region are located. It subsequently flows towards Jammu and Kashmir and enters Pakistan before joining the Chenab system. Rohtang is more closely associated with the source region of the Beas, while the Sikkim Himalaya is linked with rivers such as the Teesta. Garo Hills are low hills in Meghalaya and are not the source region of a major Indus-system river. Thus, Chamba is the best geographical association for the Ravi.

The correct answer is the Jammu region. Chenab is formed by the meeting of the Chandra and Bhaga streams and is one of the major rivers of the Indus system. Within India, its important course lies through the Jammu region, where it cuts through mountainous terrain before continuing into Pakistan. Kachchh is a dry region of Gujarat, Malwa is a plateau region of central India, and the Coromandel Coast lies along southeastern India; none of these belongs to the principal Indian course of the Chenab. The river-region association therefore makes Jammu the only suitable answer.

The correct answer is Uttarakhand. The Bhagirathi, one of the principal headstreams of the Ganga, descends from the Himalayas and reaches the plains near Haridwar. Haridwar is therefore commonly described as the point where the Ganga leaves its mountainous course and enters the northern plains. It later flows through Uttar Pradesh, Bihar and West Bengal, but those states are encountered farther downstream. The question asks for the first state in which this transition occurs, not the state containing the longest course or the delta. Hence Uttarakhand, especially the Haridwar area, is the correct choice.

The governing concept is the geographical source of a major Himalayan river. The Yamuna is traditionally considered to originate from the Yamunotri Glacier near Yamunotri in Uttarakhand. Glacier melt and snow-fed streams collect in this high Himalayan region and begin the river’s course. The Yamuna then flows through the northern plains and joins the Ganga at Prayagraj. Therefore, option B is correct. Gangotri Glacier is associated with the Bhagirathi, one of the principal source streams of the Ganga, not with the Yamuna. Siachen Glacier lies in the Karakoram and is unrelated to the accepted source of the Yamuna. Milam Glacier is associated with the Goriganga system in Uttarakhand. These geographical associations distinguish the correct answer from the distractors.

The governing concept is the source of the principal headstream of the Ganga. The Bhagirathi is traditionally treated as the main headstream, and it emerges from the Gaumukh area associated with the Gangotri Glacier in Uttarakhand. At Devprayag, the Bhagirathi meets the Alaknanda; after this confluence, the combined river is called the Ganga. Hence option A is correct. Pindari Glacier is linked with a different Himalayan drainage system. Zemu Glacier is located in Sikkim and is not the accepted source of the Ganga’s main headstream. Bara Shigri Glacier lies in Himachal Pradesh and also has no direct source association with the Ganga. The question asks about the main headstream, so the Gangotri–Bhagirathi association is the decisive clue.

The governing concept is the identification of river confluences in the Alaknanda system. A prayag is a recognised confluence, and Uttarakhand’s Panch Prayag are named according to the rivers that meet there. Alaknanda and Dhauliganga meet at Vishnuprayag in the Chamoli region, so option B is correct. The other choices refer to different confluences: at Devprayag, Alaknanda meets Bhagirathi; at Rudraprayag, it meets Mandakini; and at Karnaprayag, it meets Pindar. Nandakini joins Alaknanda at Nandprayag, which is not listed. The pair named in the question therefore uniquely identifies Vishnuprayag. Confusing the names of the five prayags is the main likely error, so matching each place with its river pair is the correct method.

The governing concept is the matching of rivers with the correct confluence, or prayag, in Uttarakhand. Alaknanda and Mandakini meet at Rudraprayag, one of the five important confluences known as Panch Prayag. Mandakini descends from the Kedarnath region, while Alaknanda is a major stream of the Ganga drainage system. Thus option A is correct. The distractors represent different locations: at Devprayag, Alaknanda meets Bhagirathi; at Nandprayag, it meets Nandakini; and Prayagraj is the major confluence in Uttar Pradesh associated with the Ganga and Yamuna, not the Alaknanda–Mandakini meeting. Remembering the river pair for each prayag prevents confusion and confirms Rudraprayag as the only suitable answer.

The correct answer is Karnaprayag. In the Alaknanda river system, the Pindar River joins the Alaknanda at Karnaprayag in Uttarakhand. This is one of the traditionally recognised Panch Prayag, or five major confluences, of the Alaknanda. The names of the Prayags are often remembered through the joining rivers: Vishnuprayag is associated with the Dhauliganga, Nandprayag with the Nandakini, Karnaprayag with the Pindar, Rudraprayag with the Mandakini, and Devprayag with the Bhagirathi. Therefore, Nandprayag and Devprayag are plausible distractors, but the Pindar connection identifies option B.

Alaknanda and Nandakini meet at Nandprayag, so option C is correct. Nandprayag is one of the five important confluences known as the Panch Prayag in the Himalayan state of Uttarakhand. A useful river-based sequence is: Dhauliganga joins Alaknanda at Vishnuprayag, Nandakini at Nandprayag, Pindar at Karnaprayag, Mandakini at Rudraprayag, and Bhagirathi at Devprayag. The question asks specifically for the meeting point of Nandakini and Alaknanda, not for any other famous confluence. Thus Devprayag, Rudraprayag and Karnaprayag are genuine Prayag names but are linked with different tributaries.

Bhagirathi and Alaknanda meet at Devprayag, making option B correct. This confluence is especially important because the river formed after their meeting is conventionally called the Ganga. Both rivers rise in the Himalayan region, but the Bhagirathi is traditionally regarded as the main headstream, beginning near Gaumukh, while the Alaknanda receives several major tributaries on its way downstream. The other choices are also Panch Prayag locations, but they involve different tributaries: Pindar meets Alaknanda at Karnaprayag, Dhauliganga at Vishnuprayag, and Nandakini at Nandprayag. The defining clue is therefore the Bhagirathi–Alaknanda meeting, which identifies Devprayag.

Option A, Ganga, is correct. Gaumukh is the snout, or lower end, of the Gangotri Glacier in Uttarakhand. The stream emerging from this glacial source is the Bhagirathi, one of the principal headstreams of the Ganga. Farther downstream, the Bhagirathi joins the Alaknanda at Devprayag, after which the combined river is conventionally called the Ganga. The Brahmaputra has a different Tibetan source region and drainage course, while Narmada and Krishna are mainly peninsular rivers with non-glacial source settings. Thus the precise local stream is Bhagirathi, but among the options its major river system is the Ganga, making A the best answer.

Girna is a tributary of the Tapi, also called the Tapti, so option A is correct. The Girna rises in the western part of Maharashtra and flows through the Khandesh region before joining the Tapi river system. This is a useful example of how tributaries help identify a river basin: Girna belongs to the Tapi basin, not to the Godavari or Krishna basins, even though all are associated with peninsular India. The Mahi is another west-flowing river but has its own independent basin and does not receive the Girna. Therefore, the geographical relationship asked in the question is Girna–Tapi, making A the unambiguous answer.

The correct answer is the Godavari system, option B. Pranhita is a major tributary of the Godavari in the Deccan Plateau region. It is formed mainly by the combined waters of the Wardha and Wainganga river systems and joins the Godavari near the boundary region of Maharashtra and Telangana. Because of its substantial water contribution, Pranhita is regarded as one of the most important tributaries of the Godavari. Narmada and Kaveri are separate peninsular river systems, while the Indus belongs to a different northern drainage system. The question asks for the larger river system rather than a state, so Godavari is the precise choice.

Manjira is a tributary of the Godavari, so option A is correct. The river rises in Maharashtra and flows generally through the Deccan region, forming an important part of the Godavari drainage network before joining the Godavari. It is associated especially with Maharashtra, Karnataka and Telangana, which can help in recalling its basin. Ganga, Yamuna and Kaveri belong to separate river systems with different geographic courses and drainage areas. The question is asking for the larger river to which Manjira contributes its flow, not for a nearby state or a place on its bank. Thus the Manjira–Godavari relationship makes option A unambiguous.

Indravati is a major tributary of the Godavari, making option B correct. It rises in the Eastern Ghats region of Odisha and flows westward through parts of Chhattisgarh, especially the Bastar area, before joining the Godavari in the border region. Its course and large drainage contribution make it an important river of the Godavari basin. Krishna and Narmada are major peninsular rivers with separate basins, while Sabarmati drains toward the Arabian Sea through western India and is unrelated to the Indravati system. The key reasoning is to identify the parent basin of Indravati; that relationship is with Godavari, not with the other listed rivers.

Periyar Lake is associated with the Periyar Wildlife Sanctuary, now commonly referred to within the Periyar Tiger Reserve landscape, in Kerala. Therefore option A is correct. The lake is a well-known artificial water body formed by the construction of the Mullaperiyar Dam, and it lies within the protected forest landscape famous for elephants, tigers and other wildlife. Gir is in Gujarat and is noted especially for the Asiatic lion; Kaziranga is in Assam and is famous for the one-horned rhinoceros; Sundarbans is a mangrove ecosystem in the Ganga–Brahmaputra delta. These locations are important protected areas, but none is associated with Periyar Lake.

The correct answer is Bhopal, because Bhojtal, also called the Upper Lake, is located in Bhopal, the capital of Madhya Pradesh. It is an important artificial lake and forms part of Bhopal’s well-known lake system; the Lower Lake is another important water body in the same city. The question tests the geographical association between a notable Indian lake and its urban location. Indore is a major city of Madhya Pradesh but is not the city identified with Bhojtal. Jaipur is associated with Rajasthan’s lakes and historic water structures, while Ahmedabad is associated with lakes such as Kankaria. Therefore, option A is the only suitable answer.

The correct answer is Rajasthan. Balsamand Lake is associated with Jodhpur, and Ranital is also listed among the lakes connected with Rajasthan’s towns and cities. The governing idea is the regional distribution of important Indian lakes: arid and semi-arid Rajasthan contains many natural, artificial and historic lakes created or preserved for water supply, recreation and royal settlements. Kerala is better known for its extensive backwaters and lagoons, Assam for riverine wetlands and beels, and Jharkhand for reservoirs and other inland water bodies. Those associations do not identify the pair in the question. Thus option A correctly places Ranital and Balsamand within Rajasthan’s lake geography.