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MCQ on NMR spectroscopy: Page-2

Select the nuclei that can produce NMR signal.
Nuclei that is NMR active

(A) P,S

(B) Q,S

(C) P,R

(D) Q,R

More the shielding effect

(A) Lower the chemical shift

(B) No change in chemical shift

(C) Higher the chemical shift

(D) More the peak splitting

Which of the following statement is FALSE

(A) Chemical shift of aromatic compounds is very low than alkenes

(B) Dioxane gives one NMR peak

(C) PMR is more sensitive than CMR

(D) Acids will have more chemical shift than alcohols

The gyro magnetic ratio for a nuclei with magnetic moment-can be expressed by

(A) 2ph/ ?I

(B) 2pI/ ?h

(C) 2p?/h I

(D) h?/2pI

The number of NMR signals possible for vinyl chloride in 1H NMR is

(A) 1

(B) 2

(C) 3

(D) 4