Q.1
In a nuclear reactor what absorbs fast moving neutrons?
  • generator
  • moderator
  • control rods
  • sheilding
Q.2
The name for protons and neutrons in nuclear chemistry is____
  • beta particles
  • positrons
  • nucleons
  • nuclides
Q.3
In a nuclear reactor what slows down neutrons?
  • Control Rods
  • Moderator
  • Sheilding
  • The brakes
Q.4
Energetic electron from decomposed neutron
  • positron
  • radioactivity
  • alpha particle
  • gamma radiation
  • beta particle
Q.5
Spontaneous emission from the nucleus of an atom
  • positron
  • radioactivity
  • alpha particle
  • gamma radiation
  • beta particle
Q.6
Emitted helium nucleus
  • positron
  • radioactivity
  • alpha particle
  • gamma radiation
  • beta particle
Q.7
High-energy photons emitted by a radioisotope
  • positron
  • radioactivity
  • alpha particle
  • gamma radiation
  • beta particle
Q.8
Particle of charge +1 and mass equal to that of an electron
  • positron
  • radioactivity
  • alpha particle
  • gamma radiation
  • beta particle
Q.9
Radiation detector that makes use of a gas-filled metal tube
  • scintillation counter
  • Geiger counter
  • neutron moderation
  • neutron absorption
  • film badge
Q.10
In ___ _____reactions, small nuclei combine, producing a large nucleus and releasing large amounts of energy.
  • nuclear fission
  • nuclear fusion
Q.11
In a(n) ___________, particles released from one nuclear reaction collide with other particles and cause more nuclear reactions.
  • nuclear fission reaction
  • nuclear fusion reaction
Q.12
The conversion of an atom of one element to an atom of another element is called ___________.
  • transmutation
  • Nuclear transmutation
  • Both A & B
  • None of these
Q.13
After one ____________ of a radioactive element, half of the original radioactive material remains.
  • half-life
  • cycle
  • decay
Q.14
The three types of nuclear radiation are _______ radiation, _________radiation, and _____________ radiation.
  • alpha, beta, and gamma
  • theta, beta, and kappa
  • alpha, beta, positron
0 h : 0 m : 1 s