Radiochemical Techniques(Analytical Instrumentation ) Questions and Answers

Question 1. Which of the following are highly effective in producing ion pairs when they pass through the matter?
  1.    Alpha particles
  2.    Beta particles
  3.    Gamma particles
  4.    X-ray particles
Explanation:-
Answer: Option A. -> Alpha particles
Answer: (a).Alpha particles
Question 2. Which of the following is not a mode by which beta particles lose energy on interaction with matter?
  1.    Photoelectric effect
  2.    Compton effect
  3.    Pair production
  4.    Collision effect
Explanation:-
Answer: Option D. -> Collision effect
Answer: (d).Collision effect
Question 3. Which of these particles are highly penetrating?
  1.    Alpha particles
  2.    Beta particles
  3.    Gamma particles
  4.    X-ray particles
Explanation:-
Answer: Option C. -> Gamma particles
Answer: (c).Gamma particles
Question 4. Which of the following can liberate photo electrons when they fall on certain metals?
  1.    Alpha particles
  2.    Beta particles
  3.    Gamma particles
  4.    X-ray particles
Explanation:-
Answer: Option D. -> X-ray particles
Answer: (d).X-ray particles
Question 5. Alpha emission is characteristic of heavier radioactive elements such as thorium, uranium, etc.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
Explanation:-
Answer: Option A. -> True
Answer: (a).True
Question 6. Given below is the block diagram of proportional counter. Identify the unmarked component.Given Below Is The Block Diagram Of Proportional Counter. Id...
  1.    Collimator
  2.    Detector crystal
  3.    Pre-amplifier
  4.    Position logic circuit
Explanation:-
Answer: Option C. -> Pre-amplifier
Answer: (c).Pre-amplifier
Question 7. Given below is a diagram of Scintillation detector. Identify the unmarked component.Given Below Is A Diagram Of Scintillation Detector. Identify...
  1.    Lens
  2.    Collimator
  3.    Dynodes
  4.    Focussing cup
Explanation:-
Answer: Option C. -> Dynodes
Answer: (c).Dynodes
Question 8. The stability of the nucleus can be predicted by which of the following?
  1.    Electron to neutron ratio
  2.    Neutron to proton ratio
  3.    Proton to electron ratio
  4.    Neutron to electron ratio
Explanation:-
Answer: Option B. -> Neutron to proton ratio
Answer: (b).Neutron to proton ratio
Question 9. Which of the following is true about radiochemical methods?
  1.    Eliminate the need for chemical preparation
  2.    Not sensitive
  3.    Not accurate
  4.    Not specific
Explanation:-
Answer: Option A. -> Eliminate the need for chemical preparation
Answer: (a).Eliminate the need for chemical preparation
Question 10. Which of the following effect occurs when a gamma ray and an electron make an elastic collision?
  1.    Photoelectric effect
  2.    Compton effect
  3.    Pair production
  4.    Collision effect
Explanation:-
Answer: Option D. -> Collision effect
Answer: (d).Collision effect
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