A fission chain reaction in uranium can be developed by________________?

Related Mcqs:

1. In nuclear fission each neutron that causes fission releases_______________?

   A. no new neutron
   B. at least one new neutron
   C. one new neutron
   D. more than one new neutrons
   E. many-fold neutrons

2. 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

3. The total energy released in fission of U is__________________?

   A. 5 MeV
   B. 10 MeV
   C. 199 MeV
   D. 168 MeV
   E. 11 MeV

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

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

5. A nuclear fission is initiated when the critical energy as compared to neutron binding energy of the atoms is_________________?

   A. same
   B. more
   C. less
   D. there is no such criterion
   E. none of the above

6. 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

7. U235 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

8. In triggering fission, the following types of neutrons are desirable_________________?

   A. fast moving
   B. slow moving
   C. critical neutrons
   D. neutrons at rest
   E. none of the above

9. In a fission process, maximum %age of energy is released as___________________?

   A. kinetic energy of neutrons
   B. kinetic energy of fission products
   C. instantaneous release of gamma rays
   D. gradual readioactive decay of fission products
   E. none of the above

10. Each fission of U235 produces following number of fast neutrons per fission________________?

    A. 1 neutron
    B. 1 — neutrons
    C. 1 – 2 neutrons
    D. 2 — neutrons
    E. infinite