A. fast moving
B. slow moving
C. critical neutrons
D. neutrons at rest
E. none of the above
Related Mcqs:
- In triggering fission, which type of neutrons are more effective_________________?
A. fast
B. slow
C. in bulk
D. static
E. activated - 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 - 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 - 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 - A nuclear fission produces energy of following order in MeV___________________?
A. 20
B. 200
C. 2000
D. 20,000
E. 2 x 105 - When a reactor becomes critical, then the production of neutrons is_________________?
A. infinite
B. zero
C. exactly balanced by the loss of neutrons through leakage
D. initiated
E. stopped - 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 - The total energy released in fission of U is__________________?
A. 5 MeV
B. 10 MeV
C. 199 MeV
D. 168 MeV
E. 11 MeV - 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 - 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
