A. any type of moderator can be used
B. graphite is used as the moderator
C. heavy water is used as the moderator
D. moderator may or may not be used
E. moderator is dispensed with
A. nucleus
B. electron
C. proton
D. meson
E. neutron
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. graphite, C02
B. graphite, air
C. heavy water, C02
D. lead, H2
E. concrete, N2
A. same
B. more
C. less
D. there is no such criterion
E. none of the above
A. protons and neutrons in an atom
B. protons and electrons in an atom
C. neutrons and electrons in an atom
D. protons and neutrons in a nucleus
E. protons and electrons in a nucleus
A. demineralised water
B. carbon dioxide
C. heavy water
D. graphite
E. no moderator is used
A. splitting
B. fission
C. fusion
D. disintegration
E. chain reaction
A. 20
B. 200
C. 2000
D. 20,000
E. 2 x 105
A. same
B. lower
C. higher
D. unity
E. higher/lower depending on the size of reactor