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MCQs

Total Questions : 45 | Page 3 of 5 pages
Question 21. CO laser is operated at liquid nitrogen temperature.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 22. West-Gaeke colorimetric method is used to analyse oxides of nitrogen.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 23. In which of the following ways can chemiluminescence occur in compounds of nitrogen?
  1.    When NO₂ returns to ground state from excited state
  2.    When NO reacts with oxygen
  3.    When NO reacts with ozone
  4.    When NO₂ is reduced to NO
 Discuss Question
Answer: Option A. -> When NO₂ returns to ground state from excited state
Answer: (a).When NO₂ returns to ground state from excited state
Question 24. The chemiluminescence reactor with ozonator is specific to which of the following compounds?
  1.    N₂
  2.    NO
  3.    NO₂
  4.    N₂O
 Discuss Question
Answer: Option B. -> NO
Answer: (b).NO
Question 25. Which of the following is the full scale range of Infrared spectroscopy method used for measurement of carbon monoxide?
  1.    0-2 ppm
  2.    0-500 ppm
  3.    0-1 ppm
  4.    0-50 ppm
 Discuss Question
Answer: Option D. -> 0-50 ppm
Answer: (d).0-50 ppm
Question 26. Which of the following is the full scale range of Gas chromatography method used for measurement of carbon monoxide?
  1.    0-200 ppm
  2.    0-500 ppm
  3.    0-1 ppm
  4.    0-50 ppm
 Discuss Question
Answer: Option A. -> 0-200 ppm
Answer: (a).0-200 ppm
Question 27. The zero of the scale is calibrated using which of the following as the sample?
  1.    Air
  2.    Water
  3.    Inert gas
  4.    Pure nitrogen
 Discuss Question
Answer: Option D. -> Pure nitrogen
Answer: (d).Pure nitrogen
Question 28. Which of the following are not the characteristics of Non-dispersive infrared analyzer method?
  1.    Easy to maintain
  2.    High response speed
  3.    Effect of interfering components is high
  4.    High sensitivity
 Discuss Question
Answer: Option C. -> Effect of interfering components is high
Answer: (c).Effect of interfering components is high
Question 29. The disadvantage of Non-dispersive infrared analyzer is that the effect of flow rate is large.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 30. Non-dispersive infrared analyzer depends on the characteristic absorption of the CO molecule at a wavelength of __________
  1.    5.4 µm
  2.    4.6 µm
  3.    8.9 µm
  4.    10.8 µm
 Discuss Question
Answer: Option B. -> 4.6 µm
Answer: (b).4.6 µm

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