logo

CuriousTab

CuriousTab

Discussion


Home Chemical Engineering Nuclear Power Engineering Comments

  • Question
  • The disintegration rate of a radioactive element


  • Options
  • A. progressively increases.
  • B. progressively decreases.
  • C. remains constant throughout.
  • D. may increase or decrease depending on the material.

  • Correct Answer
  • progressively decreases. 


  • Nuclear Power Engineering problems


    Search Results


    • 1. The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is

    • Options
    • A. 1
    • B. 0.5
    • C. 2
    • D. 4
    • Discuss
    • 2. Candu reactor is a __________ nuclcear reactor.

    • Options
    • A. natural uranium fuelled heavy water cooled & moderated
    • B. highly enriched uranium (85% U-235) fuelled
    • C. homogeneous
    • D. fast breeder
    • Discuss
    • 3. Unit of radioactivity is

    • Options
    • A. barn
    • B. fermi
    • C. angstrom
    • D. curie
    • Discuss
    • 4. Pick out the wrong statement.

    • Options
    • A. The ratio of the density of the 'nucleus' to that of the 'atom' is 1012 .
    • B. ?-particle is identical with a doubly charged helium ion.
    • C. The mass of deuterium atom is half that of helium atom.
    • D. Gamma rays are high energy electrons.
    • Discuss
    • 5. Which of the following nuclear materials is fissile?

    • Options
    • A. Uranium-238
    • B. Thorium-232
    • C. Plutonium-239
    • D. None of these
    • Discuss
    • 6. What is the average life of a radioactive atom having a 'half life period' of T?

    • Options
    • A. 1.44 T
    • B. 0.144 T
    • C. 14.4 T
    • D. 2T
    • Discuss
    • 7. "Critical mass" is the minimum mass of nuclear fissile material required for the

    • Options
    • A. sustainment of chain reaction.
    • B. power generation on commercial scale.
    • C. economic power generation.
    • D. none of these.
    • Discuss
    • 8. Heavy water is preferred over ordinary water as a coolant, because it.

    • Options
    • A. acts both as an efficient coolant as well as a moderator.
    • B. can be heated to a higher temperature without pressurizing.
    • C. is less prone to radiation damage.
    • D. all (a), (b) and (c).
    • Discuss
    • 9. Neutrons have mass approximately equal to that of __________ atoms.

    • Options
    • A. hydrogen
    • B. helium
    • C. deuterium
    • D. none of these
    • Discuss
    • 10. The main ore of thorium is

    • Options
    • A. pitchblende
    • B. monazite sand
    • C. limonite
    • D. galena
    • Discuss


    Comments

    There are no comments.

Enter a new Comment