Physical Chemistry (1444 MCQS)

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LECTURESHIP, SUBJECT SPECIALIST COURSE's

Chapter No 4 :Nuclear Chemistry (220 MCQ`S)

  1. Velocity of α-particles is:
    1. 10 times greater than that of light
    2. one-tenth than that of light
    3. equal to that of light
    4. 100 times less than that of light
      5. Show Answer
      Answer: B
      Explanation:
      • N/A
  2. α-particles have:
    1. very little penetration power
    2. very high penetration power
    3. zero penetration power
    4. high penetration power
      5. Show Answer
      Answer: A
      Explanation:
      • It is because of their high charge and relatively large size.
  3. α-particles can be stopped by:
    1. 0.01 mm thick aluminium foil
    2. a sheet of paper
    3. a few centimeters of air
    4. all of these
      5. Show Answer
      Answer: D
      Explanation:
      • Due to its very low penetration power through matter.
  4. α-particles can cause -------- of gas through wich they pass:
    1. very low ionization
    2. no ionization
    3. intense ionization
    4. poor ionization
      5. Show Answer
      Answer: C
      Explanation:
      • it is because of their high velocity and attraction for electrons.
  5. Which one is the most damaging when ingested?
    1. α emitters
    2. β emitters
    3. γ emitters
    4. all of these
      5. Show Answer
      Answer: A
      Explanation:
      • N/A
  6. β-particles are identical with:
    1. protons
    2. electrons
    3. neutrons
    4. none of these
      5. Show Answer
      Answer: B
      Explanation:
      • N/A
  7. Velocity of β-particles is:
    1. 10 times greater than alpha particles
    2. about same as that of light
    3. both a & b
    4. 10 times greater than that of light
      5. Show Answer
      Answer: C
      Explanation:
      • N/A
  8. Penetration power of β-particles is:
    1. 100 times greater than alpha particles
    2. 10 times greater than alpha particles
    3. equal to that of alpha particles
    4. 10 times greater than gamma rays
      5. Show Answer
      Answer: A
      Explanation:
      • Because β-particles have higher velocity and negligible mass
  9. Mass of β-particle is:
    1. 1 a.m.u
    2. 1/1827 a.m.u
    3. 2 a.m.u
    4. 1836 a.m.u
      5. Show Answer
      Answer: B
      Explanation:
      • N/A
  10. The ionization produced by β-particles in a gas is about:
    1. 10 times greater than alpha particles
    2. 1/10th of that of alpha particles
    3. 1/100th of that of alpha particles
    4. 10 times greater than gamma rays
      5. Show Answer
      Answer: C
      Explanation:
      • Although β-particles have higher velocity but their mass is very small, thus their K.E is much less than α-particles

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