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BARC OCES DGFS Practice Questions - BARC Scientific Officer (OCES DGFS) Online Screening Examination Exam

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About this Exam

Prepare with the BARC OCES DGFS Practice Questions - BARC Scientific Officer (OCES DGFS) Online Screening Examination Exam practice quiz. This question bank includes 100 questions covering nuclear, number, unit, reactor, and radiation. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

Sample Questions

Question 1
Which particle has the highest ionising power per unit path length among the common types of nuclear radiation?
Gamma photon
Beta particle
Alpha particle
Neutron (thermal)
Question 2
In a nuclear fission chain reaction in a thermal reactor, which material most commonly serves as the moderator?
Boron
Heavy water or light water
Cadmium
Lead
Question 3
The SI unit of radioactivity (activity) is:
Gray (Gy)
Sievert (Sv)
Becquerel (Bq)
Curie (Ci)
Question 4
India's indigenous Pressurised Heavy Water Reactors (PHWRs) use which combination of fuel and moderator/coolant?
Enriched U-235 fuel with light water moderator
Natural uranium fuel with heavy water moderator and coolant
MOX fuel with graphite moderator
Thorium fuel with sodium coolant
Question 5
What is the primary purpose of control rods in a thermal nuclear reactor?
Increase neutron flux to raise power
Absorb excess neutrons to regulate or shut down the chain reaction
Convert thermal neutrons to fast neutrons
Shield operators from gamma radiation

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Additional Information

BARC OCES DGFS Practice Questions - BARC Scientific Officer (OCES DGFS) Online Screening Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on nuclear, number, unit, reactor, and radiation. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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Frequently Asked Questions

This quiz contains a total of 100 practice questions carefully selected to test your knowledge on this subject.
Yes, you will have exactly 0 minutes to complete the exam. A countdown timer will be visible once you start.
Yes, you can retake this practice test as many times as you need. The questions and options may be randomized on subsequent attempts to ensure comprehensive learning.

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