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MCQ on NMR spectroscopy: Page-14
The chemical shift region in PMR for vinylic protons is
(A) 0-1.5
(B) 1.5-2.5
(C) 4.5-6.5
(D) 9.0-12.0
Approximate chemical shift value of acidic proton in the following compound will fall within the range of
(A) 2.5-4.5
(B) 1.5-2.5
(C) 4.5-6.5
(D) 9.0-12.0
Given below are few of the aromatic compounds. Select the compound(s) in which all aromatic protons are almost equivalent in their chemical shifts.
img (A) Q and R
(B) P and S
(C) S only
(D) P only
The a-hydrogen of alcohols, amines and alkyl halides fall in the NMR region of
(A) 2.5-4.5
(B) 1.5-2.5
(C) 4.5-6.5
(D) 9.0-12.0
Which of the following proton exists more down filed in NMR
(A) Saturated
(B) Aromatic
(C) Vinylic
(C) Allylic