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MASS SPECTROSCOPY MCQs

Total Questions : 21 | Page 1 of 3 pages
Question 1. Which of the following type of electromagnetic radiation affects the bonds,vibrating ,stretching rocking
  1.    infrared
  2.    ultraviolet
  3.    microwaves
  4.    radiowaves
 Discuss Question
Answer: Option A. -> infrared
Question 2. Which of the following type of electromagnetic radiation has the most energy
  1.    infrared
  2.    ultraviolet
  3.    microwaves
  4.    radiowaves
 Discuss Question
Answer: Option B. -> ultraviolet
Question 3. What do the peaks on the mass spectrum represent?
  1.    anions
  2.    different isotopes
  3.    atoms with differing numbers of electrons
  4.    numbers of electrons
 Discuss Question
Answer: Option B. -> different isotopes
Question 4. Element X has 2 isotopes
  1.    125.3 amu
  2.    125.7 amu
  3.    126.3 amu
  4.    126.7 amu
 Discuss Question
Answer: Option B. -> 125.7 amu
Question 5. Mass of attached atoms affect the absorbance of the bond
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 6. Highest m/z peak in mass spectrum is called as
  1.    Base peak
  2.    Fragment peak
  3.    Molecular ion peak
  4.    Parent peak
 Discuss Question
Answer: Option A. -> Base peak
Question 7. What part of the atom or molecule does infrared radiation affect
  1.    the nucleus
  2.    the electrons
  3.    the  bonds
  4.    the charge
 Discuss Question
Answer: Option C. -> the  bonds
Question 8. The splitting pattern for the hydrogen bonded to the oxygen in CH3CH(OH)CH3
  1.    0
  2.    1
  3.    2
  4.    3
 Discuss Question
Answer: Option A. -> 0
Question 9. Which of the following would be different for 1-butanol and 2-butanol
  1.    The number of peaks on low res H NMR
  2.    the molar mas
  3.    the number of peaks in C NMR
  4.    the finger print region of the infrared spectrum
 Discuss Question
Answer: Option C. -> the number of peaks in C NMR
Question 10. The greater the polarity of a bond the_______________its IR absorption
  1.    weaker
  2.    stronger
  3.    more charged
  4.    smaller the wavenumber
 Discuss Question
Answer: Option B. -> stronger

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