correspond to the molecular ion 21. Which of the mz values E. 103 D. 102 C. 100
ID: 1043984 • Letter: C
Question
correspond to the molecular ion 21. Which of the mz values E. 103 D. 102 C. 100 B. 82 A. 18 of the following compounds will have odd m'z value for the molecular ion? D. IV E. all of them A. I 23. Which molecular formula is consistent with the following mass spectral data? Mr. at nek-84, relative height-10.0% (M+D.. at m/z-85, relative height-0.56% B. CSHsO C.Clly D. C 112 E. Calco, 24. Which of the following will produce M and (M+2)' peaks of equal intensity? A. nitrogen B. chlorine C. bromine D, oxygen E, B and C 25. Which of the m/z values corresponds to the base peak in the following mass spectrum? A. 45 B. 44 C. 29 D. 15 E. 30 26. Which of the following is true about the number of signals in a 'H NMR spectrum? A. it indicates the number of neighboring protons B. it indicates the electronic environment of absorbing protons C. it indicates the number of different kinds of protons E. it indicates the electronic environment of neighboring protons D.it indicates the number of protons in the signal Which of the following is true about the area under each signal in a 'H NMR spectrum? A. it indicates the number of neighboring protons B. it indicates the electronic environment of neighboring protons C. it indicates the number of different protons D. it indicates the electronic environment of absorbing protons E. it indicates the relative number of protons in the signalExplanation / Answer
22-B(nitrogen rule)
23-D(Cyclohexane)
24-C bromine
25-C,29 most intense peak
26-C
27-E
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