Rivers and Lakes of India

Ganga is considered the longest river of India. For exams remember Ganga with the Northern Plains.

The Yamuna is one of the most important tributaries of the Ganga river system. It rises in the Himalayan region, flows through northern India, and joins the Ganga at Prayagraj. Because a tributary is a river that flows into a larger river, the Yamuna is correctly matched with the Ganga in option B. The Brahmaputra, Narmada, and Godavari are separate major river systems and are not the main river receiving the Yamuna. The confluence at Prayagraj is a useful geographical memory aid.

The answer follows the drainage pattern of northern India. After travelling through areas including the Delhi region and the plains of Uttar Pradesh, the Yamuna meets the Ganga at Prayagraj. This meeting point is called a confluence, and it demonstrates the Yamuna’s role as a tributary. The question asks for the major river to which it belongs, not for a city through which it passes. Therefore, option B, Ganga, is the precise answer.

The direct answer is C: Assam. The Brahmaputra is a major river of northeastern India. In India, after entering from Tibet through the eastern Himalaya, it flows mainly through Assam, where it forms the broad Brahmaputra Valley, before continuing toward Bangladesh. Step by step: identify the river; place its Indian course in the northeast; connect the Brahmaputra Valley with Assam; choose C. Option C is correct. Option A, Rajasthan, is in the dry northwest and is associated with desert rivers and the Indus drainage region, not the main Brahmaputra course. Option B, Gujarat, is in western India and is associated with rivers such as the Narmada, Tapi and Sabarmati. Option D, Tamil Nadu, is in the far south and is associated with rivers such as the Kaveri. Thus the other states are geographically unrelated to the principal Indian course. Memory cue: Brahmaputra = Assam Valley; do not confuse it with the Ganga’s main plain.

Godavari is called the Ganga of the South. For exams remember Godavari as a major river of Peninsular India.

Narmada flows westward into the Arabian Sea. For exams remember Narmada and Tapi as west flowing rivers.

Krishna River drains into the Bay of Bengal. For exams remember Krishna as an east flowing peninsular river.

Kaveri is an important river of South India. For exams link Kaveri with Karnataka and Tamil Nadu.

Chenab is a major river of the Indus system. For exams remember Jhelum Chenab Ravi Beas and Sutlej as Indus tributaries.

The Sutlej is one of the important tributaries of the Indus River. It rises in the region of the Tibetan Plateau, enters India through Himachal Pradesh, and flows through the Punjab region before continuing toward Pakistan. There it joins the Chenab as part of the wider Indus drainage network. Its route and tributary relationships place it firmly within the Indus river system.

Option B is correct. The Sutlej is not a tributary of the Ganga, Krishna, or Kaveri systems. Although it is associated with Punjab and is one of the rivers of the Punjab region, the broader drainage classification is more important here: the Sutlej belongs to the Indus basin and ultimately contributes its water to the Indus system.

The main source area of the Ganga is considered the Gangotri Glacier. For exams remember the Bhagirathi and Gangotri link.

Bhagirathi and Alaknanda meet at Devprayag and are called Ganga downstream. For exams remember places related to the Prayags.

Direct answer: Option A, Hirakud Dam is in Odisha. The Mahanadi is a major east-flowing river of India, and Hirakud Dam was built across it near Sambalpur in Odisha. Step by step: identify the river named in the question—Mahanadi; recall the famous multipurpose dam associated with it—Hirakud; locate the dam—Odisha. Option A is correct because both the river and the state match. Option B, Punjab, is wrong because Hirakud is not on a Punjab river; Punjab is associated with other northern river systems and projects. Option C, Rajasthan, is wrong because the dam is not in that desert state. Option D, Kerala, is wrong because Hirakud is not a Kerala project and the Mahanadi does not flow there. The question tests a fixed river-project-state association, not a calculation. Memory cue: ‘Mahanadi–Hirakud–Odisha’; repeat the three together rather than memorising the dam name alone.

Luni River is associated with the dry region of western Rajasthan. For exams remember Luni near the Thar Desert.

Tapi flows westward into the Arabian Sea. For exams remember Tapi with Narmada as a west flowing river.

The direct answer is D: the Chambal is a tributary of the Yamuna. It rises in the Vindhyan region of central India, flows generally northeastward through the Chambal basin, and joins the Yamuna near the Yamuna’s course in Uttar Pradesh. The reasoning is a river-system relationship: Chambal is not an independent answer here; its water ultimately enters the Yamuna system. Option D is correct. Option A, Brahmaputra, is wrong because the Chambal does not belong to the Brahmaputra basin. Option B, Narmada, is wrong because the Chambal is not a tributary of the west-flowing Narmada. Option C, Godavari, is wrong because it belongs to the peninsular east-flowing river system. The Chambal is also known for ravines along parts of its valley, but that fact does not change its tributary relationship. Memory cue: Chambal joins Yamuna.

Son River is a major tributary of the Ganga. For exams remember Son as a river flowing from central India toward the Ganga plain.

Direct answer: Option B, the Kosi belongs to the Ganga river system. Kosi is a Himalayan tributary that flows through Nepal and Bihar and joins the Ganga near Kursela. Step by step: Himalayan rivers descend toward the northern plains; Kosi carries water and sediment southward; it joins the Ganga; therefore it is part of the Ganga system. Option A, Indus system, is wrong because Kosi does not drain into the Indus. Option B is correct because the Ganga is its main river system. Option C, Kaveri system, is wrong because Kaveri is a peninsular river of southern India and Kosi is a Himalayan river. Option D, Narmada system, is wrong because Narmada flows westward separately toward the Arabian Sea. Kosi is also famous for frequent channel shifting and floods in Bihar, which is a useful supporting clue, but the direct reason for the answer is its confluence with the Ganga. Memory cue: Kosi—Ganga—Bihar floods.

Ghaghara is a major tributary of the Ganga. For exams remember Ghaghara as a Himalayan tributary.

Direct answer: Option D, Gandak is a tributary of the Ganga river system. Gandak rises in the Himalayan region, flows through Nepal and northern Bihar, and joins the Ganga near Sonpur. Step by step: identify Gandak as a Himalayan river; trace its general flow into the northern plains; observe that it meets the Ganga; conclude that its drainage belongs to the Ganga system. Option A, Narmada system, is wrong because Narmada is a separate west-flowing peninsular river. Option B, Godavari system, is wrong because Godavari drains much of peninsular India and Gandak does not join it. Option C, Tapi system, is wrong for the same geographical reason: Tapi is a separate west-flowing river. Option D is correct because Gandak directly contributes water to the Ganga. Its association with northern Bihar is a useful location clue, but the decisive fact is its connection with the Ganga. Memory cue: Himalayan tributary in north Bihar—Gandak joins Ganga.

Wular Lake is located in Jammu and Kashmir. For exams remember it among India's large freshwater lakes.

The direct answer is B: Srinagar. Dal Lake is a famous Himalayan lake in Srinagar, in the Kashmir Valley of Jammu and Kashmir. It is known for its mountain setting, floating gardens, houseboats, shikaras, and tourism. The lake is connected with the Jhelum river system and is an important geographical and cultural landmark of the region. Option A, Bhopal, is wrong because Bhopal is associated especially with Upper Lake and Lower Lake, not Dal Lake. Option B is correct because Srinagar is the city most directly associated with Dal Lake. Option C, Jaipur, is wrong; Jaipur is a historic city of Rajasthan and is not the home of Dal Lake. Option D, Chennai, is wrong; Chennai is a coastal city in Tamil Nadu, far from the Kashmir Valley. The question asks for the associated city, not merely the state, so select Srinagar rather than a broad regional answer. Memory cue: shikara, houseboat, and Dal Lake together point to Srinagar.

Chilika Lake is a large brackish water lake in Odisha. For exams remember Chilika with Odisha.

Loktak Lake is located in Manipur, a north-eastern state of India. It is known for floating masses of vegetation, soil and organic matter called phumdis. Keibul Lamjao National Park is linked to the Loktak Lake system. Kerala is famous for its lakes and backwaters, but Loktak Lake is not in Kerala. Exam tip: Remember Loktak Lake with Manipur and phumdis.

The direct answer is A: Sambhar Lake is a saltwater, more precisely saline, lake. It is an inland saline lake in Rajasthan and is famous for salt production. Step by step: locate Sambhar in Rajasthan; note that water evaporates strongly in the dry climate; dissolved salts remain and make the lake saline; select A. Option A is correct because it states the lake’s defining type. Option B is wrong because freshwater contains very little dissolved salt and does not describe Sambhar. Option C is wrong because a glacial lake is formed by glacier action, usually in high mountain regions; Sambhar is not a glacial lake. Option D is wrong because a volcanic lake occupies a volcanic crater or depression, whereas Sambhar is a saline inland lake, not a volcanic one. “Salt water” in this school MCQ means saline water, not necessarily ocean water. Memory cue: Sambhar, Rajasthan = salt lake and salt production.

Vembanad Lake is in Kerala. It is the longest lake in India and an important part of Kerala’s backwater system. Hence, Kerala is the correct answer. Nainital Lake is associated with Uttarakhand, not Vembanad Lake. Exam tip: Remember Vembanad Lake with Kerala’s backwaters and the Kochi region.