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MCQs

Total Questions : 136 | Page 11 of 14 pages
Question 101. Chromatography cannot be used to separate delicate products.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 102. Which of the following is not true about solvent programming which is done in high performance liquid chromatography?
  1.    It provides unequal bandwidths
  2.    It provides fast overall separation
  3.    It provides maximum resolution
  4.    It provides maximum sensitivity
 Discuss Question
Answer: Option A. -> It provides unequal bandwidths
Answer: (a).It provides unequal bandwidths
Question 103. Which of the following pulse damper takes up some amount of the pulsation energy which is released to provide smooth pressure without pulsations?
  1.    Flexible bellows or compressible gas passed through tee columns
  2.    Flexible inert diaphragm
  3.    Electronic pulse damper
  4.    Electrical pulse damper
 Discuss Question
Answer: Option A. -> Flexible bellows or compressible gas passed through tee columns
Answer: (a).Flexible bellows or compressible gas passed through tee columns
Question 104. Syringe pumps used in High pressure liquid chromatography are most suitable for which of the following columns?
  1.    Capillary columns
  2.    Guard columns
  3.    Short-fast columns
  4.    Small bore columns
 Discuss Question
Answer: Option D. -> Small bore columns
Answer: (d).Small bore columns
Question 105. Which of the following is not a characteristic of the syringe pump used in high pressure liquid chromatography?
  1.    Pressure capability is high
  2.    Maintenance is frequent
  3.    Limited reservoir capability
  4.    Slight change of flow rate when extremely high pressure compresses the solvent
 Discuss Question
Answer: Option B. -> Maintenance is frequent
Answer: (b).Maintenance is frequent
Question 106. Gravity feed method for solvent delivery is not used with narrow bore columns packed with fine mesh 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 107. Which of the following cannot be done to reduce ripple in High pressure liquid chromatography?
  1.    Using bellows
  2.    Using restrictors
  3.    Using long nylon tube between pump and column
  4.    Avoiding the use of the solvent pump
 Discuss Question
Answer: Option D. -> Avoiding the use of the solvent pump
Answer: (d).Avoiding the use of the solvent pump
Question 108. Which of the following is not a property of a good detector used in liquid chromatography?
  1.    Good sensitivity
  2.    Ability to function in the presence of a large background signal
  3.    Short response time
  4.    Volume of detector must be large
 Discuss Question
Answer: Option D. -> Volume of detector must be large
Answer: (d).Volume of detector must be large
Question 109. Detector selectivity is more important in Liquid chromatography than in Gas 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 110. Which of the following is not true about Hydraulic capacitance flow control system used in HPLC?
  1.    It can be used only for liquids with low viscosity
  2.    It is irrespective of solvent compressibility
  3.    It maintains a constant flow
  4.    It smoothens high pressure pump pulsations
 Discuss Question
Answer: Option A. -> It can be used only for liquids with low viscosity
Answer: (a).It can be used only for liquids with low viscosity

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