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MCQs

Total Questions : 136 | Page 6 of 14 pages
Question 51. Amino-acids are distinguishable from each other only by one or two atoms in their structure.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 52. In which of the following type of paper, chromatography does the mobile phase move horizontally over a circular sheet of paper?
  1.    Ascending paper chromatography
  2.    Descending paper chromatography
  3.    Radial paper chromatography
  4.    Ascending – descending chromatography
 Discuss Question
Answer: Option C. -> Radial paper chromatography
Answer: (c).Radial paper chromatography
Question 53. Gas chromatography can be performed in which of the following ways?
  1.    Only in columns
  2.    Only on plane surfaces
  3.    Either in columns or on plane surfaces
  4.    Neither in columns nor on plane surfaces
 Discuss Question
Answer: Option A. -> Only in columns
Answer: (a).Only in columns
Question 54. Which of the following types of chromatography involves the process, where the mobile phase moves through the stationary phase by the influence of gravity or capillary action?
  1.    Column Chromatography
  2.    High Pressure Liquid Chromatography
  3.    Gas Chromatography
  4.    Planar Chromatography
 Discuss Question
Answer: Option D. -> Planar Chromatography
Answer: (d).Planar Chromatography
Question 55. In Gas-liquid phase chromatography, the stationary phase is composed of _________ and the mobile phase is made of _________
  1.    Solid, liquid
  2.    Liquid, liquid
  3.    Liquid, gas
  4.    Solid, gas
 Discuss Question
Answer: Option C. -> Liquid, gas
Answer: (c).Liquid, gas
Question 56. Liquid chromatography can be performed in which of the following ways?
  1.    Only in columns
  2.    Only on plane surfaces
  3.    Either in columns or on plane surfaces
  4.    Neither in columns nor on plane surfaces
 Discuss Question
Answer: Option C. -> Either in columns or on plane surfaces
Answer: (c).Either in columns or on plane surfaces
Question 57. The stationary phase could be a viscous liquid coated over a surface of solid particles.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 58. In older analytical methods, which of the following methods were used to allow movement of the mobile phase?
  1.    Pumps
  2.    Pressure
  3.    Gravity
  4.    Blowing air into the column
 Discuss Question
Answer: Option C. -> Gravity
Answer: (c).Gravity
Question 59. How is the molar concentration of solute in stationary phase related to molar concentration of solute in the mobile phase?
  1.    Directly proportional
  2.    Inversely proportional
  3.    Equal
  4.    Not related
 Discuss Question
Answer: Option A. -> Directly proportional
Answer: (a).Directly proportional
Question 60. If the value of the distribution constant ‘k’ is one, then what could be inferred about the distribution of solute?
  1.    Its distribution in stationary phase is greater
  2.    Its distribution in mobile phase is greater
  3.    It is equally distributed in stationary and mobile phase
  4.    It is distributed in a random manner
 Discuss Question
Answer: Option C. -> It is equally distributed in stationary and mobile phase
Answer: (c).It is equally distributed in stationary and mobile phase

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