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  • Question
  • Indian monazite sand contains __________ percent thorium.


  • Options
  • A. 10
  • B. 25
  • C. 60
  • D. 90

  • Correct Answer
  • 10 


  • Nuclear Power Engineering problems


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    • 1. Which of the following radiations is the least penetrating?

    • Options
    • A. ?-rays
    • B. ?-rays
    • C. ?-rays
    • D. X-rays
    • Discuss
    • 2. Uranium ore is mined & concentrated in India at

    • Options
    • A. Jadugoda(Jharkhand)
    • B. Kota (Rajasthan)
    • C. Tuticorin (Tamilnadu)
    • D. Talchar (Orissa)
    • Discuss
    • 3. Pick out the wrong statement.

    • Options
    • A. ?-particle emission from a radioactive element makes it electrically negative.
    • B. ?-particle emission from a radioactive element makes it electrically positive.
    • C. A radioactive element having a half life period of 20 years will completely disintegrated in 40 years.
    • D. The disintegration constant of a radioactive isotope is independent of pressure, temperature or concentration.
    • Discuss
    • 4. Artificially produced radioactive isotopes are used for

    • Options
    • A. power generation.
    • B. treatment of certain diseases.
    • C. initiating nuclear fission and fusion.
    • D. all (a), (b) and (c).
    • Discuss
    • 5. Mass of a positron is same as that of a/an

    • Options
    • A. electron
    • B. ?-particle
    • C. proton
    • D. neutron
    • Discuss
    • 6. Hydrogen differs from deuterium in __________ properties.

    • Options
    • A. radioactive
    • B. physical
    • C. chemical
    • D. all (a), (b) and (c)
    • Discuss
    • 7. Enriched uranium means that, it contains

    • Options
    • A. more than 0.71% of U-235.
    • B. only fertile material.
    • C. only fissile material.
    • D. no impurities.
    • Discuss
    • 8. Ceramic nuclear metals compared to solid nuclear metals have

    • Options
    • A. higher melting points.
    • B. low strength at high temperature.
    • C. more chances of radiation damage.
    • D. poorer corrosion resistance.
    • Discuss
    • 9. Fuel for a fast breeder reactor is

    • Options
    • A. plutonium
    • B. uranium
    • C. radium
    • D. neptunium
    • Discuss
    • 10. Safety rods provided in nuclear reactors to guard against accidents, in case of earthquake are made of

    • Options
    • A. high carbon steel.
    • B. molybdenum.
    • C. zircalloy.
    • D. boron or cadmium.
    • Discuss


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