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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
butyric-acid

(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.
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(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