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MCQs

Total Questions : 55 | Page 5 of 6 pages
Question 41. Variation in absorption against wavelength can be plotted on
  1.    wave spectrometer
  2.    infrared spectrometer
  3.    wavelength spectrometer
  4.    wavenumber spectrometer
 Discuss Question
Answer: Option B. -> infrared spectrometer
Answer: (b).infrared spectrometer
Question 42. Fundamental oscillations giving strong absorptions can be studied in
  1.    thin films or fibers
  2.    thick films or fibers
  3.    plastic
  4.    nylon
 Discuss Question
Answer: Option A. -> thin films or fibers
Answer: (a).thin films or fibers
Question 43. Absorption frequency for example of carbon-hydrogen bond in a terminal group as compared to chain is
  1.    same
  2.    different
  3.    variable
  4.    strong
 Discuss Question
Answer: Option B. -> different
Answer: (b).different
Question 44. Because of influence of surroundings, absorption may occur in
  1.    crystalline regions
  2.    non crystalline region
  3.    central region
  4.    different regions
 Discuss Question
Answer: Option A. -> crystalline regions
Answer: (a).crystalline regions
Question 45. Advantage of infrared absorption is that it is influenced by all the
  1.    molecules
  2.    atoms
  3.    ions
  4.    forces
 Discuss Question
Answer: Option A. -> molecules
Answer: (a).molecules
Question 46. Characteristic spectrum helps in determining presence of
  1.    water in fibers
  2.    particle in fibre
  3.    chemical in fibre
  4.    mineral in fibre
 Discuss Question
Answer: Option A. -> water in fibers
Answer: (a).water in fibers
Question 47. At higher wavenumbers, near optical frequency, absorptions occur due to the
  1.    harmonics of fundamental frequency
  2.    optical frequency
  3.    wave frequency
  4.    high frequency
 Discuss Question
Answer: Option A. -> harmonics of fundamental frequency
Answer: (a).harmonics of fundamental frequency
Question 48. Use of Raman spectroscopy in study of aramid, polyester and carbon fibre is provided by
  1.    John
  2.    David
  3.    Young
  4.    Nathan
 Discuss Question
Answer: Option C. -> Young
Answer: (c).Young
Question 49. Photons that are in elastically scattered gives results to
  1.    moderate scattering
  2.    elastic scattering
  3.    Raman spectroscopy
  4.    moderate spectroscopy
 Discuss Question
Answer: Option C. -> Raman spectroscopy
Answer: (c).Raman spectroscopy
Question 50. Wavenumber at which absorption normally occurs depends on the
  1.    nature of atoms
  2.    bond between atoms
  3.    both a and b
  4.    frequency
 Discuss Question
Answer: Option C. -> both a and b
Answer: (c).both a and b

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