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CHEM2425. Test 1 (chapter 12, 13, 14, 15). Stafford. S18. Version B Multiple Choice Identify the choice that best completes the statement or answers the question. 1. How many signals appear in proton-decoupled 'C NMR spectrum of 3,4-dimethylh C NMR spectrum of 3,4-dimethylhexane? 2. What is the splitting of the signal in the 'H NMR spectrum for the methyl pr a. singlet b, doublet c.) triplet d. nonet 3. What is the hydrogen deficiency index for a compound with a molecular formula of C12Hi O? 4. What is the best choice of reagent to achieve the following reaction? OH a. H2SO LiAlH d. NaOH, HO 5. Which of the molecules gives rise to a molecular ion with an odd value of m/? b. CsHIgN 6. In mass spectrometry, which of the following phrases is shortened to the acronym "FAB"? a fast atom bombardment fragmented atom beam c. flying atom bashing d. flight averaged bumping pg. 1 CHEM2425. Test 1 (chapter 12, 13, 14, 15). Stafford. S18.. Version B