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MCQs

Total Questions : 116 | Page 10 of 12 pages
Question 91. In SEM, the image is formed by the electrons that _________________
  1.    reflect back
  2.    ionize
  3.    undergo inversion
  4.    pass through
 Discuss Question
Answer: Option A. -> reflect back
Answer: (a).reflect back
Question 92. Isotopes have the same number of protons.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 93. Which of the following is radioactive?
  1.    hydrogen sulfide
  2.    vimentin
  3.    tritium
  4.    deuterium
 Discuss Question
Answer: Option C. -> tritium
Answer: (c).tritium
Question 94. The AFM uses a _______________ to scan the surface of a molecule.
  1.    X-ray film
  2.    Nanosized tip
  3.    Non-metal tip
  4.    Nanodrop
 Discuss Question
Answer: Option B. -> Nanosized tip
Answer: (b).Nanosized tip
Question 95. The identity and chemical properties of an atom are determined by ____________
  1.    critical temperature
  2.    critical freezing point
  3.    melting temperature
  4.    number of protons
 Discuss Question
Answer: Option D. -> number of protons
Answer: (d).number of protons
Question 96. In gel electrophoresis, the globular proteins move slower than the fibrous proteins.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 97. Proteins with greater charge density move faster in the PAGE.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 98. For a mass spectrometric analysis, the compounds are converted into ___________________
  1.    gaseous ions
  2.    soluble form
  3.    matrix
  4.    antibody
 Discuss Question
Answer: Option A. -> gaseous ions
Answer: (a).gaseous ions
Question 99. When was the technique of two-dimensional gel electrophoresis developed?
  1.    1955
  2.    1965
  3.    1975
  4.    1985
 Discuss Question
Answer: Option C. -> 1975
Answer: (c).1975
Question 100. Which of the following amino acid absorbs the light of 280 nm?
  1.    tyrosine
  2.    cysteine
  3.    leucine
  4.    valine
 Discuss Question
Answer: Option A. -> tyrosine
Answer: (a).tyrosine

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