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MCQs

Total Questions : 78 | Page 8 of 8 pages
Question 71. X-ray diffractometers provide ____________ information about the compounds present in a solid sample.
  1.    Quantitative
  2.    Qualitative
  3.    Quantitative and qualitative
  4.    Either quantitative or qualitative
 Discuss Question
Answer: Option C. -> Quantitative and qualitative
Answer: (c).Quantitative and qualitative
Question 72. In powder method, the powder sample is contained in which of the following?
  1.    Thin walled glass capillary tubes
  2.    Thin walled test tube
  3.    Thin walled curvettes
  4.    Thin walled flask
 Discuss Question
Answer: Option A. -> Thin walled glass capillary tubes
Answer: (a).Thin walled glass capillary tubes
Question 73. Using the powder method of diffractometers, which of the following can be determined?
  1.    Percentage of K⁺
  2.    Percentage of Na⁺ and Cl⁻
  3.    Percentage of KBr and NaCl
  4.    Percentage of Br⁻
 Discuss Question
Answer: Option C. -> Percentage of KBr and NaCl
Answer: (c).Percentage of KBr and NaCl
Question 74. The problem of spectral interference is not severe in X-ray spectroscopy.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 75. In X-ray fluorescence spectrometer, the relationship between the excitation intensity and the intensity of fluorescence does not depend on which of the following?
  1.    Spectrum of the incident radiation
  2.    Angle of radiance
  3.    Molecular weight
  4.    Incident angle
 Discuss Question
Answer: Option D. -> Incident angle
Answer: (d).Incident angle
Question 76. Fluorescent X-ray spectrometers would require only moderate-intensity X-ray tubes.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 77. Why is a mono-energetic radiation source required in X-ray fluorescent spectrometer?
  1.    To provide good sensitivity
  2.    To provide high accuracy
  3.    To provide a proper range
  4.    To reduce unwanted background
 Discuss Question
Answer: Option D. -> To reduce unwanted background
Answer: (d).To reduce unwanted background
Question 78. Which of the following components of the X-ray fluorescent spectrometer induces fluorescent radiation?
  1.    Excitation source
  2.    Energy analyser
  3.    X-ray spectrometer
  4.    Detection System
 Discuss Question
Answer: Option A. -> Excitation source
Answer: (a).Excitation source

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