Q100. The Bhadla Solar Park, one of the largest in the world, is located in which Indian state?
[RRB NTPC (UG) CBT-I, 09 May 2026 Shift 1]
(A) Gujarat
(B) Madhya Pradesh
(C) Rajasthan
(D) Maharashtra
Answer: (C) Rajasthan
Explanation: Bhadla Solar Park is in the arid Phalodi region of Rajasthan. Its high solar irradiation and extensive land availability made it suitable for a large photovoltaic complex. The park is an important landmark in India’s utility-scale solar expansion.
Q99. Which is the largest solar park in India by installed capacity as of 2025?
[RRB NTPC (Graduate) CBT-I, 17 March 2026 Shift 2]
(A) Bhadla Solar Park
(B) Rewa Solar Park
(C) Pavagada Solar Park
(D) Kurnool Ultra Mega Solar Park
Answer: (A) Bhadla Solar Park
Explanation: Bhadla Solar Park in Rajasthan has about 2,245 MW of installed solar capacity. It was developed in multiple phases and is often identified in examination material as India’s largest operational solar park at the period specified.
Q98. The Vindhyachal Super Thermal Power Station is located in which state?
[RRB NTPC (UG) CBT-I, 07 May 2026 Shift 1]
(A) Chhattisgarh
(B) Madhya Pradesh
(C) Rajasthan
(D) Gujarat
Answer: (B) Madhya Pradesh
Explanation: The Vindhyachal Super Thermal Power Station is an NTPC coal-fired generating complex in Singrauli district, Madhya Pradesh. It is a major component of India’s thermal electricity network and has a large multi-unit installed generating capacity.
Q97. The Kudankulam Nuclear Power Plant is located in which state?
[RRB NTPC (Graduate) CBT-I, 19 March 2026 Shift 1]
(A) Andhra Pradesh
(B) Tamil Nadu
(C) Kerala
(D) Karnataka
Answer: (B) Tamil Nadu
Explanation: Kudankulam is situated in Tirunelveli district of Tamil Nadu. The station uses Russian-designed VVER pressurised-water reactors and forms a major part of India’s civilian nuclear energy programme, with additional units planned or under construction.
Q96. In which valley of Himachal Pradesh is an experimental geothermal project located?
[DSSSB PRT, 10 April 2026 Shift 1]
(A) Parvati Valley
(B) Kangra Valley
(C) Solang Valley
(D) Spiti Valley
Answer: (A) Parvati Valley
Explanation: Manikaran lies in the Parvati Valley of Kullu district, Himachal Pradesh. Hot springs reveal the region’s geothermal potential. Exploratory and experimental work here has investigated using naturally heated groundwater and subsurface heat for energy applications.
Q95. Where is India’s 500 MWe Prototype Fast Breeder Reactor located?
[DSSSB MTS, 25 July 2026 Shift 3]
(A) Tarapur
(B) Kalpakkam
(C) Rawatbhata
(D) Kudankulam
Answer: (B) Kalpakkam
Explanation: The Prototype Fast Breeder Reactor is located at Kalpakkam in Tamil Nadu. Fast breeder technology forms the second stage of India’s three-stage nuclear strategy, using fast neutrons to make better use of fissile and fertile nuclear materials.
Q94. Which BARC-developed reactor achieved first criticality with low-enriched uranium fuel?
[SSC GD Constable, 29 May 2026 Shift 1]
(A) PURNIMA
(B) APSARA-U
(C) DHRUVA
(D) KAMINI
Answer: (B) APSARA-U
Explanation: APSARA-U is an upgraded swimming-pool-type research reactor at BARC in Mumbai. It achieved criticality in September 2018 and uses indigenously developed low-enriched uranium fuel. Research reactors support neutron experiments, training and isotope-related applications.
Q93. Which Indian PSU is primarily responsible for large-scale electricity generation nationwide?
[DSSSB Assistant Superintendent, 06 July 2026 Shift 1]
(A) Steel Authority of India Limited
(B) Oil and Natural Gas Corporation
(C) Coal India Limited
(D) NTPC Limited
Answer: (D) NTPC Limited
Explanation: NTPC began as the National Thermal Power Corporation in 1975 and developed into a major integrated power utility. Alongside thermal generation, its portfolio has expanded into hydro and renewable projects and power-related services.
Q92. Why is the solar constant useful when designing a solar power plant?
[RRB Group D, 21 August 2026 Shift 1]
(A) It measures sunshine duration
(B) It states the highest attainable temperature
(C) It indicates incoming solar energy before atmospheric losses
(D) It measures only atmospheric absorption
Answer: (C) It indicates incoming solar energy before atmospheric losses
Explanation: The solar constant is solar irradiance measured outside Earth’s atmosphere at the mean Earth–Sun distance. Solar plant planners combine this reference with atmospheric effects, local weather, tilt and site conditions to estimate photovoltaic electricity production.
Q91. Which private company received an NPCIL order in April 2025 for two 700 MW nuclear reactors in Karnataka?
[DSSSB Assistant Superintendent, 03 July 2026 Shift 1]
(A) Adani Power
(B) Reliance Industries and Infrastructure
(C) Tata Power
(D) Megha Engineering and Infrastructures
Answer: (D) Megha Engineering and Infrastructures
Explanation: Megha Engineering and Infrastructures Limited was reported as the awardee of the project contract. The planned 700 MW units relate to expansion at Kaiga in Karnataka and illustrate the role of infrastructure contractors in civil nuclear construction.