Q230. The five Punjab rivers merge ultimately into which main system near Mithankot?
[RRB NTPC Graduate CBT-I (24 March 2026, Shift 3)]
(A) Godavari
(B) Ganga
(C) Brahmaputra
(D) Indus
Answer: (D) Indus
Explanation: Jhelum, Chenab, Ravi, Beas and Sutlej constitute the well-known Punjab tributaries of the Indus. Their waters combine through the Panjnad system before meeting the Indus. Regional relief, river outlets and tributary connections help distinguish the surrounding drainage basin geographically.
Q229. Which three river systems chiefly built the Northern Plains through alluvial deposition?
[RRB NTPC Graduate CBT-I (25 March 2026, Shift 3)]
(A) Mahanadi, Ganga and Brahmaputra
(B) Krishna, Godavari and Yamuna
(C) Indus, Ganga and Brahmaputra
(D) Narmada, Tapi and Kaveri
Answer: (C) Indus, Ganga and Brahmaputra
Explanation: The Indus, Ganga and Brahmaputra systems carry immense loads of Himalayan sediment. Their prolonged deposition created the fertile alluvial plains of northern India. Regional relief, river outlets and tributary connections help distinguish the surrounding drainage basin geographically.
Q228. Which is not a peninsular river?
[RRB NTPC Graduate CBT-I (27 March 2026, Shift 1)]
(A) Ganga
(B) Narmada
(C) Krishna
(D) Godavari
Answer: (A) Ganga
Explanation: Ganga belongs to the Himalayan drainage system, although it receives tributaries from the peninsular plateau. The other three named rivers originate in peninsular India. Plateau slopes and underlying geological structures are especially important in determining peninsular drainage patterns.
Q227. Which of these rivers deposits a delta on India’s eastern coast?
[RRB NTPC Graduate CBT-I (27 March 2026, Shift 2)]
(A) Narmada
(B) Mahi
(C) Godavari
(D) Tapi
Answer: (C) Godavari
Explanation: Godavari flows towards the Bay of Bengal and builds a distributary-rich delta in Andhra Pradesh. Narmada, Mahi and Tapi instead drain towards the west. Regional relief, river outlets and tributary connections help distinguish the surrounding drainage basin geographically.
Q226. Which river is not associated with an eastern-coastal delta?
[RRB NTPC Graduate CBT-I (27 March 2026, Shift 3)]
(A) Godavari
(B) Tapti
(C) Krishna
(D) Mahanadi
Answer: (B) Tapti
Explanation: Tapi is a west-flowing river reaching the Arabian Sea near the Gulf of Khambhat. Godavari, Krishna and Mahanadi are east-flowing rivers with deltas. Regional relief, river outlets and tributary connections help distinguish the surrounding drainage basin geographically.
Q225. Which is the largest freshwater lake in India in the listed options?
[RRB NTPC UG CBT-I (14 June 2026, Shift 2)]
(A) Wular Lake
(B) Loktak Lake
(C) Chilika Lake
(D) Dal Lake
Answer: (A) Wular Lake
Explanation: Wular Lake in Jammu and Kashmir is a large freshwater lake fed by the Jhelum. Chilika is brackish, while Loktak is noted for its floating phumdis. The balance of rainfall, inflowing streams, evaporation and coastal connections determines the waterbody’s character.
Q224. On which river is Nagarjuna Sagar Dam constructed?
[RRB NTPC UG CBT-I (16 June 2026, Shift 2)]
(A) Krishna
(B) Godavari
(C) Tungabhadra
(D) Bhima
Answer: (A) Krishna
Explanation: The Nagarjuna Sagar project spans the Krishna River between Telangana and Andhra Pradesh. It provides irrigation storage and hydropower and is renowned for its large masonry dam. Reservoir location, river discharge and terrain affect the supply of water for irrigation and electricity.
Q223. Which river’s basin has the greatest catchment area in India?
[RRB NTPC Graduate CBT-II (10 July 2026, Shift 1)]
(A) Krishna
(B) Ganga
(C) Narmada
(D) Godavari
Answer: (B) Ganga
Explanation: India’s Ganga basin extends across the densely settled Northern Plains and adjoining uplands. Tributaries from the Himalayas and peninsular areas make it much larger than the named peninsular basins. Regional relief, river outlets and tributary connections help distinguish the surrounding drainage basin geographically.
Q222. Which Himalayan river-based hydroelectric project is listed?
[RRB NTPC Graduate CBT-II (10 July 2026, Shift 1)]
(A) Srisailam project
(B) Krishnarajasagar project
(C) Mettur project
(D) Tehri hydroelectric project
Answer: (D) Tehri hydroelectric project
Explanation: The Tehri scheme is on the Bhagirathi, one of the headstreams of the Ganga. Srisailam is on Krishna; Krishnarajasagar and Mettur are connected with Kaveri. Reservoir location, river discharge and terrain affect the supply of water for irrigation and electricity.
Q221. The Sardar Sarovar Project stands on which river?
[RRB NTPC Graduate CBT-II (10 July 2026, Shift 1)]
(A) Mahi
(B) Narmada
(C) Tapi
(D) Sabarmati
Answer: (B) Narmada
Explanation: Sardar Sarovar Dam is on the Narmada in Gujarat and is part of the Narmada Valley development programme. It provides irrigation, drinking water and electricity. Regional relief, river outlets and tributary connections help distinguish the surrounding drainage basin geographically.
