Rivers and Lakes of India

Narmada flows westward through a rift valley. For exams link Narmada with Vindhya Satpura and Arabian Sea.

Tapi and Narmada both flow westward into the Arabian Sea. For exams remember them as exceptions among east flowing Peninsular rivers.

Luni is an example of inland drainage in dry Rajasthan. For exams link Luni with Aravalli and Thar region.

Godavari is considered the largest Peninsular river of South India. For exams link it with Trimbak source and Bay of Bengal.

Pranhita Indravati and Manjira are linked with the Godavari system. For exams remember Godavari tributaries in groups.

These are important tributaries of the Krishna river system. For exams study the Krishna system separately from Godavari and Kaveri.

Kabini Hemavati Bhavani and Amaravati are linked with the Kaveri system. For exams link Kaveri with Karnataka and Tamil Nadu.

Tungabhadra is formed from Tunga and Bhadra and is a tributary of Krishna. For exams remember name based confluences.

Yamuna Son and Damodar are counted among major right bank tributaries of Ganga. For exams separate right and left bank tributaries.

Ghaghara Gandak and Kosi are Himalayan left bank tributaries of Ganga. For exams remember their Nepal Himalaya link.

Kosi is known for channel shifting due to heavy silt and low gradient. For exams connect Kosi with floods in Bihar.

Bhagirathi and Alaknanda meet at Devprayag and are called Ganga. For exams remember the order of Panch Prayag.

Nandakini meets Alaknanda at Nandprayag. For exams use the name similarity to remember Nandakini and Nandprayag.

The direct answer is D, Vishnuprayag. In the Alaknanda river system, Dhauliganga joins the Alaknanda at Vishnuprayag. The reasoning is a river-confluence match: identify the tributary, Dhauliganga; identify the main river, Alaknanda; then recall the Prayag where they meet—Vishnuprayag. Option A, Rudraprayag, is wrong because Mandakini joins the Alaknanda there. Option B, Karnaprayag, is wrong because Pindar joins the Alaknanda there. Option C, Devprayag, is wrong for this pairing because Bhagirathi joins Alaknanda at Devprayag, and their meeting forms the Ganga. Option D, Vishnuprayag, is correct because it is the confluence of Dhauliganga and Alaknanda. These Prayags are important Uttarakhand geography facts, so memorising the tributary–Prayag pairs prevents confusion. Memory chain: Vishnuprayag–Dhauliganga, Nandprayag–Nandakini, Karnaprayag–Pindar, Rudraprayag–Mandakini, Devprayag–Bhagirathi.

Brahmaputra is known as Tsangpo in Tibet and Dihang in Arunachal. For exams remember the name sequence.

After the confluence of Dihang Lohit and Dibang the river is called Brahmaputra in Assam. For exams remember northeastern confluences.

Majuli is a river island linked with the Brahmaputra River in Assam. For exams connect Majuli with Assam and river island.

All these are important tributaries of the Brahmaputra system. For exams study rivers of Northeast India separately.

Teesta is linked with Sikkim and North Bengal and is studied in the Brahmaputra system. For exams remember the Eastern Himalaya context.

The direct answer is C: Chandra and Bhaga. The Chenab is a major river of the Indus river system. In the Himalayan region of Himachal Pradesh, the Chandra and Bhaga streams meet at Tandi, and after this confluence the combined river is called the Chenab. The reasoning is therefore: Chandra stream plus Bhaga stream equals Chenab. Option C gives exactly this pair. Option A, Tunga and Bhadra, is wrong because their confluence forms the Tungabhadra in southern India. Option B, Ghaghara and Gandak, is wrong because these are separate tributaries of the Ganga system and do not form the Chenab. Option D, Narmada and Tapi, is wrong because both are important west-flowing peninsular rivers; they do not join to form Chenab. A careful student should not confuse similarly named Himalayan rivers or unrelated river systems. Memory cue: “Chandra + Bhaga = Chenab”; the first part of the name can help you recall the pair.

Floating cultivation in Dal Lake is locally called Rad. For exams link Dal Lake with Srinagar.

Phumdi are floating masses of vegetation and soil in Loktak Lake. For exams remember Loktak Manipur and Keibul Lamjao.

Keibul Lamjao is considered a floating national park linked with the phumdi ecology of Loktak Lake. For exams link it with Manipur.

Chilika is a brackish coastal lagoon of Odisha. For exams remember Chilika Odisha and Bay of Bengal.

Sriharikota is a barrier island area between Pulicat Lake and the Bay of Bengal. For exams study Pulicat and Sriharikota together.