Science & Technology·Prelims Questions

Nuclear Reactors — Prelims Questions

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Version 1Updated 10 Mar 2026
Q1medium

Which of the following statements about Pressurized Heavy Water Reactors (PHWRs) in India is/are correct? 1. They use natural uranium as fuel. 2. They use light water as both moderator and coolant. 3. They can be refueled online without shutting down. Select the correct answer using the code given below:

Q2easy

Consider the following components of a nuclear reactor: 1. Moderator 2. Coolant 3. Control Rods 4. Fuel Rods Which of the above components are primarily responsible for regulating the rate of nuclear fission?

Q3medium

With reference to India's three-stage nuclear power program, which of the following statements is correct?

Q4easy

Which of the following coolants is typically used in Fast Breeder Reactors (FBRs) due to its excellent heat transfer properties and low neutron absorption?

Q5medium

Regarding Small Modular Reactors (SMRs), which of the following statements is/are correct? 1. They have a power capacity typically above 1000 MWe per unit. 2. They are designed for factory fabrication and ease of transport. 3. They often incorporate enhanced passive safety features. Select the correct answer using the code given below:

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