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Q.1: Average energy required to remove one nucleon from the nucleus is called———?

  1. Binding energy per nucleon
  2. Energy of decay
  3. Destruction energy
  4. All of above


Q.2: The fission chain reaction in a nuclear reactor can be controlled by introducing ——–?

  1. Iron rods
  2. Graphite rods
  3. Cadmium rods
  4. Platinum rods


Q.3: Which one of the following radiations possesses maximum velocity ?

  1. α-rays
  2. β-rays
  3. γ-rays
  4. All of above have the same speed


Q.4: The charge on an electron was determine by ——–?

  1. Ampere
  2. Maxwell
  3. Millikan
  4. Thomson


Q.5: The charge on neutron is——–?

  1. Plus 1.6 x 10-19C
  2. Zero
  3. Minus 1.6 x 10-19C
  4. No definite charge


Q.6: A particle having the mass of an electron and the charge of a proton is called a——-?

  1. Antiproton
  2. Positron
  3. Gamma rays
  4. Photon


Q.7: Mass of neutron is——–?

  1. 1.67 x 10-31 kg
  2. 1.67 x 10-27 kg
  3. 9.1 x 10-31 kg
  4. 1.67 x 10-19 kg


Q.8: Nuclei having the same mass number but different atomic number are——?

  1. Isotopes
  2. Isobars
  3. Isotones
  4. Isomers


Q.9: A mass spectrograph (spectrometer) sorts out——?

  1. Molecules
  2. Ions
  3. Elements
  4. Isotopes


Q.10: Sum of the masses of constituent nucleons as compared to the mass of the resultant nucleus is——-?

  1. Smaller
  2. Greater than 82
  3. Same
  4. Sometimes smaller some times greater