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
Related Mcqs:
- Enriched uranium may contain fissionable contents of the order of__________________?
A. 1-99%
B. 1-25%
C. 1-50%
D. 1-75%
E. 1-90%. - 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 - 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 - 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 - 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 - The total energy released in fission of U is__________________?
A. 5 MeV
B. 10 MeV
C. 199 MeV
D. 168 MeV
E. 11 MeV - The main interest of shielding in nuclear reactor is protection against_______________?
A. X-rays
B. infra-red rays
C. a, P, and y rays
D. neutrons and gamma rays
E. electrons - U238 will undergo fission by_________________?
A. high energy (fast) neutrons alone
B. low energy (slow) neutrons alone
C. either fast or slow neutrons
D. medium energy neutrons
E. none of the above - The unit of radio-activity is_____________?
A. electron-volt
B. electron-ampere
C. curie
D. MeV
E. AMU - Which of the following is more appropriate for a moderator. One which_________________?
A. does not absorb neutrons
B. absorbs neutrons
C. accelerates neutrons
D. eats up neutrons
E. regenerates neutrons
