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Total Questions : 78 | Page 6 of 8 pages
Question 51. Which of the following does not make the X-ray tube nearly monochromatic?
  1.    Transmission-anode X-ray tube
  2.    Secondary fluorescence target
  3.    Slit
  4.    Filters
 Discuss Question
Answer: Option C. -> Slit
Answer: (c).Slit
Question 52. Which of the following components make use of a thin metal foil to isolate a nearly mono-energetic excitation beam?
  1.    Transmission-anode X-ray tube
  2.    Secondary fluorescence target
  3.    Slit
  4.    Filters
 Discuss Question
Answer: Option D. -> Filters
Answer: (d).Filters
Question 53. In Energy dispersive system, the energy level and the number of pulses is related to which of the following?
  1.    Amount of sample, element involved
  2.    Element involved, concentration of the element
  3.    Concentration of the element, element involved
  4.    Number of atoms, amount of sample
 Discuss Question
Answer: Option B. -> Element involved, concentration of the element
Answer: (b).Element involved, concentration of the element
Question 54. The analysis of X-ray beam by diffraction is similar to spectrum analysis carried out with a diffraction grating.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 55. Energy dispersive system uses which of the following detectors?
  1.    Optical detector
  2.    Semiconductor detector
  3.    Thermistor
  4.    Bolometer
 Discuss Question
Answer: Option B. -> Semiconductor detector
Answer: (b).Semiconductor detector
Question 56. Which of the following happens when a large solid angle is intercepted as the detector is placed close to the sample?
  1.    Maximum efficiency increases
  2.    Maximum efficiency decreases
  3.    Efficiency is not affected
  4.    Process response becomes fast
 Discuss Question
Answer: Option A. -> Maximum efficiency increases
Answer: (a).Maximum efficiency increases
Question 57. To monitor the primary beam, which of the following is used?
  1.    Scintillation counter
  2.    GM counter
  3.    Gamma counter
  4.    Proportional counter
 Discuss Question
Answer: Option B. -> GM counter
Answer: (b).GM counter
Question 58. The major problem associated with sample preparation is which of the following?
  1.    Preparing sample in the right quantity
  2.    Choosing sample holders
  3.    Matrix effects
  4.    Reflection by holders
 Discuss Question
Answer: Option C. -> Matrix effects
Answer: (c).Matrix effects
Question 59. In computer-controlled corrective iteration method, which of the following is used to estimate absorption corrections?
  1.    Initial raw intensity data
  2.    Elemental composition
  3.    Amount of sample
  4.    Amount of radiation
 Discuss Question
Answer: Option A. -> Initial raw intensity data
Answer: (a).Initial raw intensity data
Question 60. Computer-controlled corrective iteration is the only reliable method of matrix effects correction.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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