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MCQs

Total Questions : 136 | Page 4 of 14 pages
Question 31. The distribution coefficients of Gas-solid chromatography are greater than that of Gas-liquid chromatography.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 32. Which of the following is not true about narrow bore column when compared to standard columns?
  1.    Internal diameter decreases
  2.    Volumetric flow decreases
  3.    Solvent cost is saved
  4.    Detector response time increases
 Discuss Question
Answer: Option D. -> Detector response time increases
Answer: (d).Detector response time increases
Question 33. Which of the following types of liquid chromatography uses immobilized biochemical as a stationary phase?
  1.    Ion exchange chromatography
  2.    Exclusion chromatography
  3.    Affinity chromatography
  4.    Gel permeation chromatography
 Discuss Question
Answer: Option C. -> Affinity chromatography
Answer: (c).Affinity chromatography
Question 34. High pressure liquid chromatography can be performed only in columns.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 35. Which of the following is not true about High pressure liquid chromatography (HPLC)?
  1.    It requires high pressure for the separation of the specious
  2.    There is no need to vaporise the samples
  3.    It is performed in columns
  4.    It has high sensitivity
 Discuss Question
Answer: Option B. -> There is no need to vaporise the samples
Answer: (b).There is no need to vaporise the samples
Question 36. Which of the following is not an advantage of Syringe type pumps used in High pressure liquid chromatography?
  1.    Independent of viscosity
  2.    Pulse-less flow
  3.    High pressure capability
  4.    Unlimited solvent capacity
 Discuss Question
Answer: Option D. -> Unlimited solvent capacity
Answer: (d).Unlimited solvent capacity
Question 37. Which of the following UV absorbance detectors provide a real time spectrum of the component of interest?
  1.    Continuous wavelength detector
  2.    Variable wavelength detector
  3.    Scanning wavelength detector
  4.    Fixed wavelength detector
 Discuss Question
Answer: Option C. -> Scanning wavelength detector
Answer: (c).Scanning wavelength detector
Question 38. Which of the following detectors depend on Snell’s law at the interface between the cell wall and the flowing liquid to deflect the light beam?
  1.    Electrochemical detectors
  2.    Fluorescence detectors
  3.    Refractive index detectors
  4.    Thermal conductivity detectors
 Discuss Question
Answer: Option C. -> Refractive index detectors
Answer: (c).Refractive index detectors
Question 39. Fluorescence detection is less selective than absorption detection.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 40. Refractive index detectors used in liquid chromatography are not based on which of the following processes?
  1.    Interference
  2.    Refraction
  3.    Reflection
  4.    Absorption
 Discuss Question
Answer: Option D. -> Absorption
Answer: (d).Absorption

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