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MCQs

Total Questions : 55 | Page 3 of 6 pages
Question 21. Variation in absorption spectrum with polarization direction can be used to investigate degree of
  1.    orientation of ions
  2.    orientation of atoms
  3.    orientation of molecules
  4.    orientation of compound
 Discuss Question
Answer: Option C. -> orientation of molecules
Answer: (c).orientation of molecules
Question 22. At higher wavenumbers and weaker absorptions material that can be studied should be
  1.    plastic
  2.    nylon
  3.    thick
  4.    thin
 Discuss Question
Answer: Option C. -> thick
Answer: (c).thick
Question 23. While plotting variation in absorption and wavelength, point where frequency of electromagnetic waves corresponds to natural frequency of vibration, is called as
  1.    peak
  2.    low point
  3.    center
  4.    variation
 Discuss Question
Answer: Option A. -> peak
Answer: (a).peak
Question 24. Reciprocal of wavelength is
  1.    wavenumber
  2.    wave
  3.    wavedensity
  4.    wavelength
 Discuss Question
Answer: Option A. -> wavenumber
Answer: (a).wavenumber
Question 25. Regions accessible to heavy water are
  1.    crystalline regions
  2.    non crystalline region
  3.    dark region
  4.    light region
 Discuss Question
Answer: Option B. -> non crystalline region
Answer: (b).non crystalline region
Question 26. With help of infrared absorption, important thing that can be determined is
  1.    chemical formula
  2.    chemical properties
  3.    physical properties
  4.    all of above
 Discuss Question
Answer: Option A. -> chemical formula
Answer: (a).chemical formula
Question 27. Effects of photon energy are manifestated in
  1.    dark region
  2.    light region
  3.    invisible region
  4.    visible region
 Discuss Question
Answer: Option D. -> visible region
Answer: (d).visible region
Question 28. Oscillations of atom vary from maximum to minimum at right angle if infrared radiation is
  1.    non polarized
  2.    polarized
  3.    zero
  4.    negligible
 Discuss Question
Answer: Option B. -> polarized
Answer: (b).polarized
Question 29. In infrared spectroscopy, radiation absorbed at certain frequencies yield structural information having wavelengths between
  1.    1 and 15 micrometer
  2.    5 and 15 micrometer
  3.    15 and 25 micrometer
  4.    15 and 35 micrometer
 Discuss Question
Answer: Option A. -> 1 and 15 micrometer
Answer: (a).1 and 15 micrometer
Question 30. Polyethene has a strong double peak at
  1.    725
  2.    625
  3.    825
  4.    713
 Discuss Question
Answer: Option A. -> 725
Answer: (a).725

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