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MCQs

Total Questions : 78 | Page 7 of 8 pages
Question 61. Electron probe microanalyser is a method of destructive elemental analysis.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 62. Which of the following is the limit of detectability of electron microprobe analyser?
  1.    10-14 g
  2.    10-140 g
  3.    10-7 g
  4.    10-70 g
 Discuss Question
Answer: Option A. -> 10-14 g
Answer: (a).10-14 g
Question 63. Micro probe analyser cannot be used on inhomogeneous material.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 64. Which of the following is the effective resolution limit in electron probe microanalyser?
  1.    1mm
  2.    10mm
  3.    100mm
  4.    1000mm
 Discuss Question
Answer: Option A. -> 1mm
Answer: (a).1mm
Question 65. X-ray emission must be analysed against a background of _______ radiation.
  1.    Blue
  2.    Yellow
  3.    White
  4.    Green
 Discuss Question
Answer: Option C. -> White
Answer: (c).White
Question 66. The alternative method using laser does not analyse vapours by which of the following methods?
  1.    Mass spectrometer
  2.    Optical emission
  3.    Absorption photometry
  4.    X-ray photometry
 Discuss Question
Answer: Option D. -> X-ray photometry
Answer: (d).X-ray photometry
Question 67. Given below is the diagram of energy dispersive system. Identify the unmarked component.Given Below Is The Diagram Of Energy Dispersive System. Iden...
  1.    Lens
  2.    Specimen
  3.    Sample holder
  4.    Energy analyser
 Discuss Question
Answer: Option B. -> Specimen
Answer: (b).Specimen
Question 68. Given below is the block diagram of X-ray spectrometer. Identify the unmarked component.Given Below Is The Block Diagram Of X-ray Spectrometer. Iden...
  1.    Filter
  2.    Monochromator
  3.    Specimen
  4.    Amplifier
 Discuss Question
Answer: Option C. -> Specimen
Answer: (c).Specimen
Question 69. The x-rays generated come out of the Coolidge tube through which of the following?
  1.    Beryllium window
  2.    Tungsten window
  3.    Collimator
  4.    Target material
 Discuss Question
Answer: Option A. -> Beryllium window
Answer: (a).Beryllium window
Question 70. X-ray diffractometers are not used to identify the physical properties of which of the following?
  1.    Metals
  2.    Liquids
  3.    Polymeric materials
  4.    Solids
 Discuss Question
Answer: Option B. -> Liquids
Answer: (b).Liquids

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