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MCQs

Total Questions : 148 | Page 7 of 15 pages
Question 61. The characterisation of auger spectroscopy can be achieved up to which of the following depths?
  1.    1 nm
  2.    2 nm
  3.    4 nm
  4.    8 nm
 Discuss Question
Answer: Option A. -> 1 nm
Answer: (a).1 nm
Question 62. Qualitative chemical analysis is very often performed using which of the following?
  1.    ESCA
  2.    SIMS
  3.    AES
  4.    Ion spectroscopy
 Discuss Question
Answer: Option C. -> AES
Answer: (c).AES
Question 63. AES is limited when it comes to very high resolution studies.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 64. Auger electron spectroscopy can be used for surface chemical analysis in a way similar to which of the following?
  1.    ESCA
  2.    SIMS
  3.    ISS
  4.    Ion spectroscopy
 Discuss Question
Answer: Option A. -> ESCA
Answer: (a).ESCA
Question 65. Electron ionization can produce which of the following?
  1.    ESCA electron
  2.    Auger electron
  3.    Ion
  4.    Photon
 Discuss Question
Answer: Option B. -> Auger electron
Answer: (b).Auger electron
Question 66. A basic X-ray source includes which of the following components?
  1.    Large target anode
  2.    Large target cathode
  3.    Small target anode
  4.    Small target cathode
 Discuss Question
Answer: Option A. -> Large target anode
Answer: (a).Large target anode
Question 67. Which is the most intense line in the X-ray spectrum?
  1.    Kα₁
  2.    Kα₂
  3.    Kα₁₂
  4.    Kα₂₂
 Discuss Question
Answer: Option C. -> Kα₁₂
Answer: (c).Kα₁₂
Question 68. Which of the following is one of the most commonly used anode material?
  1.    Carbon
  2.    Tungsten
  3.    Magnesium
  4.    Cesium
 Discuss Question
Answer: Option C. -> Magnesium
Answer: (c).Magnesium
Question 69. The anode is held at __________ positive potential and the filament is held at ____________ potential.
  1.    High, ground
  2.    Ground, high
  3.    Low, high
  4.    High, low
 Discuss Question
Answer: Option A. -> High, ground
Answer: (a).High, ground
Question 70. Which of the following must be used with the X-ray source to have high energy resolution?
  1.    Chopper
  2.    Vacuum chamber
  3.    Accelerator
  4.    Monochromator
 Discuss Question
Answer: Option D. -> Monochromator
Answer: (d).Monochromator

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