150. Which dam is constructed across the Sutlej River?
[SSC GD Constable (7 May, Shift 1), 2026]
(A) Bhakra Dam
(B) Nagarjuna Sagar
(C) Hirakud Dam
(D) Tehri Dam
Answer: (A) Bhakra Dam
Explanation: Bhakra Dam is the principal structure of the Bhakra–Nangal system on the Sutlej in Himachal Pradesh. Its Gobind Sagar reservoir stores water for irrigation, while the associated powerhouses produce hydroelectricity for northwestern India.
149. Which is the highest dam in India?
[SSC GD Constable (8 May, Shift 2), 2026]
(A) Bhakra–Nangal
(B) Hirakud
(C) Tehri
(D) Sardar Sarovar
Answer: (C) Tehri
Explanation: Tehri rises approximately 260.5 metres above its foundation on the Bhagirathi in Uttarakhand. Unlike Hirakud, which is associated with overall dam length, Tehri holds the distinction for height and supports hydropower and water supply.
148. Which project transformed the flood-prone ‘Sorrow of Bengal’ river basin through multipurpose development?
[DSSSB Assistant Superintendent (3 July, Shift 1), 2026]
(A) Bhakra–Nangal
(B) Narmada Valley
(C) Nagarjuna Sagar
(D) Damodar Valley
Answer: (D) Damodar Valley
Explanation: The Damodar River was historically called the Sorrow of Bengal because of devastating floods. The Damodar Valley Corporation coordinated storage, power production, irrigation and flood moderation across what are now Jharkhand and West Bengal.
147. Which listed water-resource project is on the Krishna River?
[DSSSB Assistant Superintendent (12 July, Shift 3), 2026]
(A) Tehri
(B) Mettur
(C) Nagarjuna Sagar
(D) Gandak
Answer: (C) Nagarjuna Sagar
Explanation: Nagarjuna Sagar spans the Krishna near the Telangana–Andhra Pradesh boundary. It supplies irrigation through a major canal network and supports hydroelectric generation. The other options relate to the Bhagirathi, Cauvery and Gandak rivers respectively.
146. The Damodar Valley Corporation was established primarily for which purpose?
[SSC GD Constable (27 May, Shift 1), 2026]
(A) Trade promotion
(B) Steel manufacturing
(C) Multipurpose river-basin development
(D) Rural credit
Answer: (C) Multipurpose river-basin development
Explanation: Created in 1948, the DVC coordinates flood control, irrigation, electricity generation and industrial water supply in the Damodar basin. Its institutional model was influenced by the Tennessee Valley Authority, rather than a banking or trade agency.
145. Which river is associated with the Sardar Sarovar multipurpose dam?
[DSSSB Assistant Superintendent (3 July, Shift 2), 2026]
(A) Tapi
(B) Narmada
(C) Krishna
(D) Godavari
Answer: (B) Narmada
Explanation: Sardar Sarovar stands across the Narmada in Gujarat and is a major component of the Narmada Valley development programme. The project serves irrigation and drinking-water needs while producing hydropower for beneficiary states.
144. On which river is the Tehri Hydropower Complex built?
[DSSSB Court Attendant (12 June, Shift 2), 2026]
(A) Alaknanda
(B) Kosi
(C) Bhagirathi
(D) Kali
Answer: (C) Bhagirathi
Explanation: The principal Tehri Dam blocks the Bhagirathi near Tehri Garhwal, upstream of its meeting with the Alaknanda at Devprayag. The reservoir supports a large hydropower complex together with municipal water supply and irrigation.
143. Which of these is identified in the paper as India’s largest multipurpose river-valley project?
[RRB NTPC UG (18 June, Shift 2), 2026]
(A) Damodar Valley
(B) Bhakra–Nangal
(C) Sardar Sarovar
(D) Hirakud
Answer: (B) Bhakra–Nangal
Explanation: Bhakra–Nangal is a vast integrated irrigation-and-hydroelectric system on the Sutlej. Water delivered to Punjab, Haryana and Rajasthan helped expand irrigated agriculture, while the Bhakra and Nangal works regulate river flow.
142. Sardar Sarovar Dam is built on which river?
[MP Police Sub-Inspector (18 January, Shift 2), 2026]
(A) Godavari
(B) Mahi
(C) Narmada
(D) Tapi
Answer: (C) Narmada
Explanation: The project lies on the west-flowing Narmada near Kevadia in Gujarat. Beyond generating electricity, it stores and distributes water through extensive canals, especially for drought-prone districts of western India.
141. Hirakud, among India’s longest dam systems, is across which river?
[MP Police Sub-Inspector (17 January, Shift 2), 2026]
(A) Cauvery
(B) Krishna
(C) Mahanadi
(D) Godavari
Answer: (C) Mahanadi
Explanation: Hirakud is situated near Sambalpur in Odisha on the Mahanadi. The main dam together with its dykes stretches roughly 25.8 kilometres and was planned principally for flood moderation, irrigation and power generation.