Enriched uranium may contain fissionable contents of the order of__________________?

Related Mcqs:

1. Enriched uranium is one in which__________________?

   A. %age of U235 has been artificially in-creased
   B. %age of U has been artificially increased
   C. %age of U234 has been artificially in-creased
   D. extra energy is pumped from outside
   E. all impurities have been removed

2. Amongst the following, the fissionable materials are________________?

   A. U233andPu239
   B. U23iandPu233
   C. U235andPu235
   D. U238andPu239
   E. U243andPu235

3. In the breeder reactors the generation of new fissionable atom is_________________?

   A. at the lower rate than the consumption
   B. at a higher rate than the constuption
   C. at an equal rate of the consumption
   D. depends on other considerations
   E. unpredictable

4. Natural uranium is made up of__________________?

   A. 99.282% U238, 0.712% U235, 0.006% U234
   B. 99.282% U235, 0.712% U238, 0.06%’ U234
   C. 99.282% U234, 0.712% U238, 0.006% U235
   D. 99.282% U235, 0.712% U234, 0.006% U238
   E. none of the above

5. One gram of uranium will produce energy equivalent to approximately____________________?

   A. 1 tonne of high grade coal
   B. 4.5 tonnes of high grade coal
   C. 10 tonnes of high grade coal
   D. 100 tonnes of high grade coal
   E. 1000 tonnes of high grade coal

6. Uranium-233 is produced__________________?

   A. as basic raw material
   B. by neutron irradiation of Uz
   C. by neutron irradiation of thorium
   D. artificially
   E. in high capacity furnaces

7. A fission chain reaction in uranium can be developed by________________?

   A. slowing down fast neutrons so that Uz fission continues by slow motion neutrons
   B. accelerating fast neutrons
   C. absorbing all neutrons
   D. using moderator
   E. enriching U235

8. A nuclear fission produces energy of following order in MeV___________________?

   A. 20
   B. 200
   C. 2000
   D. 20,000
   E. 2 x 105

9. In order to have constant clain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be________________?

   A. greater than 1.0
   B. less than 1.0
   C. equal to zero
   D. equal to 1.0
   E. equal to infinity

10. The fuel needed, with reflector in nuclear power plant, in order to generate sufficient neutrons to sustain a chain reaction, would be________________?

    A. more
    B. less
    C. same
    D. zero
    E. negative, i.e. fuel would be generated