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MCQs

Total Questions : 91 | Page 8 of 10 pages
Question 71. Pharmaceutical industry employs _____________ in order to recycle flow or add value to later products.
  1.    plate and frame press
  2.    ultrafiltration
  3.    filtration
  4.    chromatography
 Discuss Question
Answer: Option B. -> ultrafiltration
Answer: (b).ultrafiltration
Question 72. What does the following equation represents?
ϕ=\(\frac{kPA_f}{ηD_f}\)
  1.    Ionic strength
  2.    Kinetic rate constant
  3.    Solubility of an enzyme
  4.    Volumetric throughput
 Discuss Question
Answer: Option D. -> Volumetric throughput
Answer: (d).Volumetric throughput
Question 73. Which chromatography technique consist of a stationary phase immobilized on a glass plate and an organic solvent acting as a mobile phase?
  1.    Ion exchange chromatography
  2.    Affinity chromatography
  3.    Thin layer chromatography (TLC)
  4.    Gel exclusion chromatography
 Discuss Question
Answer: Option C. -> Thin layer chromatography (TLC)
Answer: (c).Thin layer chromatography (TLC)
Question 74. The method which relies on differences in partitioning behavior between a flowing mobile phase and a stationary phase to separate the components in a mixture is referred to as _________________
  1.    homogenization
  2.    dialysis
  3.    chromatography
  4.    ultrafiltration
 Discuss Question
Answer: Option C. -> chromatography
Answer: (c).chromatography
Question 75. If the solvent phase in TLC was 80:20 mixture of hexane and ethyl acetate, the polar compounds will not move as much as non-polar compounds.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 76. The presence of enzyme in the sample can be detected by _________________
  1.    gel exclusion chromatography
  2.    affinity chromatography
  3.    ion exchange chromatography
  4.    thin layer chromatography (TLC)
 Discuss Question
Answer: Option D. -> thin layer chromatography (TLC)
Answer: (d).thin layer chromatography (TLC)
Question 77. Cation exchange resin is used to purify __________
  1.    alkaline protease
  2.    peroxidase
  3.    alpha amylase
  4.    cytochrome c
 Discuss Question
Answer: Option D. -> cytochrome c
Answer: (d).cytochrome c
Question 78. Which of this is not true while selecting a solid matrix or column during affinity chromatography?
  1.    The matrix should interact weakly with enzymes
  2.    The matrix should be based on inorganic compounds
  3.    The matrix should exhibit good flow property
  4.    The matrix should be highly porous
 Discuss Question
Answer: Option B. -> The matrix should be based on inorganic compounds
Answer: (b).The matrix should be based on inorganic compounds
Question 79. Which of the following is not a highly specific biological interaction to be used in affinity chromatography?
  1.    Cations-anions
  2.    Antigen-antibody
  3.    Enzyme-substrate
  4.    Receptor-ligand
 Discuss Question
Answer: Option A. -> Cations-anions
Answer: (a).Cations-anions
Question 80. Which of the functional groups are not present in cation exchangers?
  1.    SO₃⁻
  2.    OPO₃⁻
  3.    NR₃⁺
  4.    COO⁻
 Discuss Question
Answer: Option C. -> NR₃⁺
Answer: (c).NR₃⁺

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