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MCQs

Total Questions : 61 | Page 6 of 7 pages
Question 51. Which of the following are considered to be the lowest form of Electromagnetic radiation?
  1.    IR radiation
  2.    Micro waves
  3.    UV radiation
  4.    Radio waves
 Discuss Question
Answer: Option D. -> Radio waves
Answer: (d).Radio waves
Question 52. Which of the following type of NMR spectrometer uses a frequency synthesizer to generate RF fields?
  1.    Minimal type
  2.    Maximal type
  3.    Multipurpose type
  4.    Wideline type
 Discuss Question
Answer: Option C. -> Multipurpose type
Answer: (c).Multipurpose type
Question 53. In wideline NMR spectrometers, which of the following has to be supplied to the electromagnet?
  1.    Slowly varying low voltage
  2.    Rapidly varying low voltage
  3.    Slowly varying scan voltage
  4.    Rapidly varying scan voltage
 Discuss Question
Answer: Option C. -> Slowly varying scan voltage
Answer: (c).Slowly varying scan voltage
Question 54. Which of the following NMR spectrometers have stressed reliability and ease of operation?
  1.    Minimal type
  2.    Maximal type
  3.    Multipurpose type
  4.    Wideline type
 Discuss Question
Answer: Option A. -> Minimal type
Answer: (a).Minimal type
Question 55. Permanent magnet cannot be used in wideline type NMR spectrometer.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 56. Which among the following NMR spectrometer is the more diverse spectrometer?
  1.    Minimal type
  2.    Maximal type
  3.    Multipurpose type
  4.    Wideline type
 Discuss Question
Answer: Option C. -> Multipurpose type
Answer: (c).Multipurpose type
Question 57. The sample is contained in which of the following components?
  1.    Flask
  2.    Capillary tube
  3.    Curvette
  4.    Bore glass tube
 Discuss Question
Answer: Option D. -> Bore glass tube
Answer: (d).Bore glass tube
Question 58. Which of the following must not be done to maintain the magnetic field over the sample uniform in space and time?
  1.    Large pole pieces need to be used
  2.    Pole faces must be polished
  3.    Wide pole gap must be present
  4.    Magnets can be permanent or electromagnet
 Discuss Question
Answer: Option C. -> Wide pole gap must be present
Answer: (c).Wide pole gap must be present
Question 59. Nuclear induction probes’ one coil is used for signal detection. What is the function of the other coil?
  1.    Sample irradiation
  2.    Magnet
  3.    Detector
  4.    Sweep generator
 Discuss Question
Answer: Option A. -> Sample irradiation
Answer: (a).Sample irradiation
Question 60. The voltage generated by the receiver coil is small and it must be amplified.
  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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