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MCQs

Total Questions : 133 | Page 12 of 14 pages
Question 111. Which of the following is the least sensitive ion detector?
  1.    Faraday cup collector
  2.    Channeltron
  3.    Micro-channel plate
  4.    Electron multiplier transducer
 Discuss Question
Answer: Option A. -> Faraday cup collector
Answer: (a).Faraday cup collector
Question 112. In which of the following detectors, the collector is placed in an inclined manner?
  1.    Faraday cup collector
  2.    Channeltron
  3.    Micro-channel plate
  4.    Electron multiplier transducer
 Discuss Question
Answer: Option A. -> Faraday cup collector
Answer: (a).Faraday cup collector
Question 113. Which of the following are true about dynodes used in discrete dynode electron multiplier?
  1.    The dynodes are all kept at same voltage
  2.    Successive dynodes are held at lower potential
  3.    Successive dynodes are held at higher potential
  4.    All dynodes are held at very low potential
 Discuss Question
Answer: Option C. -> Successive dynodes are held at higher potential
Answer: (c).Successive dynodes are held at higher potential
Question 114. Which of the following is not the characteristic of ICP spectrometer?
  1.    Easy sample introduction
  2.    It can trace multiple elements
  3.    High detection limits
  4.    Accurate
 Discuss Question
Answer: Option C. -> High detection limits
Answer: (c).High detection limits
Question 115. Which of the following is the most accurate method of determination of elemental composition?
  1.    Spectroscopy
  2.    Isotope dilution
  3.    Isobar dilution
  4.    Chromatography
 Discuss Question
Answer: Option B. -> Isotope dilution
Answer: (b).Isotope dilution
Question 116. ICP spectrometer is a sequential multi-element analyser that has scan times less than ____ for one sweep.
  1.    10ms
  2.    20ms
  3.    50ms
  4.    100ms
 Discuss Question
Answer: Option B. -> 20ms
Answer: (b).20ms
Question 117. The most common type of ion detector found in ICP system is which of the following?
  1.    Faraday cup collector
  2.    Channeltron
  3.    Micro-channel plate
  4.    Flame ionization detector
 Discuss Question
Answer: Option B. -> Channeltron
Answer: (b).Channeltron
Question 118. Double focussing section analysers offer better resolution than ICP spectrometry system.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 119. Which of the following is the most commonly used interface?
  1.    Nebulizer
  2.    Chopper
  3.    Filter
  4.    Vapourising chamber
 Discuss Question
Answer: Option A. -> Nebulizer
Answer: (a).Nebulizer
Question 120. The ions are focussed and de-clustered through which of the following regions?
  1.    Dry helium region
  2.    Wet oxygen region
  3.    Wet chlorine region
  4.    Dry nitrogen region
 Discuss Question
Answer: Option D. -> Dry nitrogen region
Answer: (d).Dry nitrogen region

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