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MCQ on NMR spectroscopy: Page-13

A decrease in the longitudinal relaxation results in

(A) Narrow band width

(B) Broad band width

(C) No effect on band width

(D) Fluorescence

Under an applied magnetic field, a nuclei with spin quantum number as one can exist

(A) 2

(B) 3

(C) 5

(D) 0

Gyromagnetic ratio is the ratio of

(A) Magnetic moment to angular momentum

(B) angular momentum to Magnetic moment

(C) Potential energy to angular momentum

(D) Potential energy to Magnetic moment

Calculate the operating frequency or Larmor frequency of rf radiation required at

(A) 300 MHz

(B) 200 MHz

(C) 600 MHz

(D) 900 MHz

The chemical shift for a peak 300 Hz downfield from TMS peak measured at operating

(A) 2 ppm

(B) 0.3 ppm

(C) 1.5 ppm

(D) 0.5 ppm