Q5901. What is the expected cause-and-effect outcome of the successful privatization and commercialization of the SSLV program?
RAS Prelims MCQ Practice
9,654 RAS Prelims practice MCQs with the correct answer and a clear explanation for each. Filter by subject and chapter.
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Q5902. Consider the following statements regarding India’s Space Economy:
I. Foreign Direct Investment (FDI) up to 100% is now allowed under the automatic route for manufacturing satellite components and systems.
II. The space economy reforms aim to increase India’s share in the global space economy from the current ~2% to around 9-10% in the future.
III. NITI Aayog strictly prohibits private startups from using ISRO’s testing facilities.
Which of the above statement(s) is/are correct?
I. Foreign Direct Investment (FDI) up to 100% is now allowed under the automatic route for manufacturing satellite components and systems.
II. The space economy reforms aim to increase India’s share in the global space economy from the current ~2% to around 9-10% in the future.
III. NITI Aayog strictly prohibits private startups from using ISRO’s testing facilities.
Which of the above statement(s) is/are correct?
Explanation
Recent reforms have opened the space sector to significant foreign investment, with 100% FDI allowed for manufacturing satellite components. This policy aims to boost India’s global market share in the space economy. To support this growth, the government actively encourages private startups to utilize ISRO’s world-class testing and launch facilities, providing them with the necessary tools to validate their technologies without building expensive infrastructure from scratch.
Q5903. The 500 MWe Prototype Fast Breeder Reactor (PFBR), a critical component of India’s nuclear power programme, is located at which site?
Explanation
The Prototype Fast Breeder Reactor (PFBR) is located at the Madras Atomic Power Station site in Kalpakkam, Tamil Nadu. This 500 MWe reactor is a key milestone in India’s nuclear energy strategy, as it marks the transition to the second stage of the three-stage power programme. It is designed to produce more fuel than it consumes, ensuring long-term sustainability and efficient utilization of India’s nuclear resources.
Q5904. In the context of India’s nuclear energy, what defines a "closed fuel cycle"?
Explanation
A "closed fuel cycle" is a strategy where spent nuclear fuel is not treated as waste but as a valuable resource. The used fuel is chemically reprocessed to recover fissile materials like plutonium, which are then used to manufacture new fuel for different types of reactors, such as fast breeders. this approach maximizes energy extraction from uranium and minimizes the volume of long-lived radioactive waste that requires permanent disposal.
Q5905. India possesses vast reserves of Thorium, critical for the third stage of its nuclear program. These reserves are primarily found in monazite sands located in:
Explanation
India’s vast thorium reserves are found within monazite, a reddish-brown phosphate mineral. These monazite-rich sands are primarily concentrated along the coastal stretches of Kerala, Tamil Nadu, and Odisha. The easy accessibility and abundance of these coastal deposits are what make thorium a central pillar of India’s long-term energy security strategy, as it provides a nearly inexhaustible source of domestic fuel for future nuclear reactors.
Q5906. Identify the correct pair matching the nuclear power station with its location state.
Explanation
The Kakrapar Atomic Power Station is a major nuclear facility located in Gujarat. It recently achieved a significant milestone with the commercial operation of its 700 MWe indigenous reactors. Other plants like Kudankulam are in Tamil Nadu, and Narora is in Uttar Pradesh. These stations are strategically distributed to provide stable, base-load power to different regional grids across the country, supporting industrial and domestic energy needs.
Q5907. Which of the following statements regarding Pressurized Heavy Water Reactors (PHWRs) in India is incorrect?
Explanation
Pressurised Heavy Water Reactors (PHWRs) are the mainstay of India’s first stage of nuclear power. A major technical advantage of these reactors is that they use natural uranium as fuel, eliminating the need for expensive and complex uranium enrichment facilities. They utilize heavy water as both a moderator and a coolant. Modern Indian-designed 700 MWe PHWRs represent a significant achievement in domestic engineering and safety standards.
Q5908. What is the most appropriate reason for India developing Advanced Heavy Water Reactors (AHWRs)?
Explanation
The Advanced Heavy Water Reactor (AHWR) is a unique Indian design specifically developed to expedite the utilization of thorium for power generation. It serves as a technological bridge that demonstrates the feasibility of the thorium fuel cycle. By using a mix of thorium and other fissile materials, the AHWR provides a platform to refine the systems and safety protocols needed for large-scale thorium-based energy production.
Q5909. Which of the following Indian states is an exception and currently DOES NOT have an operational commercial nuclear power plant?
Explanation
Commercial nuclear power plants in India are currently operational in states like Tamil Nadu (Kudankulam, Kalpakkam), Rajasthan (Rawatbhata), Karnataka (Kaiga), and Gujarat (Kakrapar). Other facilities exist in Maharashtra and Uttar Pradesh. As of now, Bihar does not have an operational commercial nuclear power plant, although the government continues to evaluate potential sites across the country for the future expansion of the nuclear energy program.
Q5910. Consider the following statements regarding India’s 3-stage nuclear program:
I. Stage 1 utilizes Pressurized Heavy Water Reactors fueled by natural Uranium.
II. Stage 2 utilizes Fast Breeder Reactors fueled by a mixed oxide of Plutonium and Uranium.
III. Stage 3 utilizes Advanced Heavy Water Reactors fueled by Thorium-232 and Uranium-233.
IV. Fast Breeder Reactors produce more fissile material than they consume.
Which of the above statement(s) is/are correct?
I. Stage 1 utilizes Pressurized Heavy Water Reactors fueled by natural Uranium.
II. Stage 2 utilizes Fast Breeder Reactors fueled by a mixed oxide of Plutonium and Uranium.
III. Stage 3 utilizes Advanced Heavy Water Reactors fueled by Thorium-232 and Uranium-233.
IV. Fast Breeder Reactors produce more fissile material than they consume.
Which of the above statement(s) is/are correct?
Explanation
Rajasthan has implemented several digital initiatives, including e-Mitra for service delivery, RajKaj for government workflow, and Rajasthan Sampark for grievance redressal. The Single Sign-On system provides a unified identity for accessing these services. Together, these programs are designed to improve governance transparency, enhance the efficiency of citizen service delivery, and make the government more accessible to people through modern technology.Answer key for these questions
| Q | Correct answer |
|---|---|
| 5901 | (c) Transferring manufacturing to private sectors lowers costs via mass production. |
| 5902 | (a) I and II only |
| 5903 | (d) Kalpakkam, Tamil Nadu |
| 5904 | (b) Reprocessing spent fuel to extract materials for subsequent reactor stages |
| 5905 | (c) The coastal beaches of Kerala and Odisha |
| 5906 | (d) Kakrapar Atomic Power Station - Gujarat |
| 5907 | (a) They require highly enriched uranium (over 90%) to sustain a chain reaction |
| 5908 | (b) To serve as a bridge to the Thorium-based third stage nuclear program |
| 5909 | (a) Bihar |
| 5910 | (d) I, II, III, and IV |
Frequently asked questions
How many RAS Prelims practice MCQs are there on RAS Prelims?
This page has 9654 practice MCQs on the RAS Prelims syllabus. Each has the correct answer, and most have an explanation.
How should I practise MCQs for RAS Prelims?
Attempt each question first, then open the answer and read the explanation. Practise one chapter at a time, note the facts you got wrong and revise them. Repeat the chapter after a few days.
Are these actual RAS Prelims past-paper questions?
No. These are practice questions written for the RAS Prelims syllabus. They follow the pattern the exam uses: factual questions, statement-based questions, match-the-list and assertion-reason.