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  • Question
  • A moderator __________ the neutrons.


  • Options
  • A. slows down
  • B. absorbs
  • C. accelerates
  • D. reflects

  • Correct Answer
  • slows down 


  • More questions

    • 1. 1 centistoke is equal to __________ Redwood I seconds.

    • Options
    • A. 1
    • B. 4.08
    • C. 0.408
    • D. 40.8
    • Discuss
    • 2. Addition of grog in fireclay brick during its manufacture is advantageous, because it results in

    • Options
    • A. less shrinkage in heating, decreased apparent porosity & increased specific gravity.
    • B. high strength & thermal spalling resistance.
    • C. less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production.
    • D. all (a), (b) and (c).
    • Discuss
    • 3. The maximum adiabatic flame temperature of fuels in air is __________ the maximum flame temperature in pure oxygen.

    • Options
    • A. lower than
    • B. higher than
    • C. same as
    • D. not related to
    • Discuss
    • 4. Which of the following is a desirable characteristic of an instrument?

    • Options
    • A. High drift
    • B. High fidelity
    • C. High measuring lag
    • D. Poor reproducibility
    • Discuss
    • 5. A pressure vessel is said to be made of 'thick' shell, if the ratio of its diameter to wall thickness is

    • Options
    • A. 10
    • B. 10
    • C. 20
    • D. 20
    • Discuss
    • 6. For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm.

    • Options
    • A. 10000
    • B. 5
    • C. 500
    • D. 1000
    • Discuss
    • 7. Test piece for determination of RUL of a refractory is heated in a/an

    • Options
    • A. oxidising atmosphere
    • B. reducing atmosphere
    • C. electric furnace
    • D. neutral atmosphere
    • Discuss
    • 8. __________ polymer is used for making unbreakable crockery.

    • Options
    • A. Thermoplastic
    • B. Melamine
    • C. Addition
    • D. none of these
    • Discuss
    • 9. __________ is a copolymer.

    • Options
    • A. Nylon-66
    • B. Polyrophylene
    • C. PVC
    • D. Poly tetra flouro ethylene
    • Discuss
    • 10. Petroleum deposits are detected by the.

    • Options
    • A. oil seepage at the surface of the earth.
    • B. measuremet of density, elasticity and magnetic & electric properties of the rock in the crust of the earth.
    • C. age & nature of rocks inside the crust of the earth.
    • D. all (a), (b) and (c)
    • Discuss


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