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MCQ on Fluorescence spectroscopy: Page-3

Which of the following two emissions is very rapid
fluorescence and phosphorescence

(A) P

(B) Q

(C) Both P and Q are fast

(D) Both P and Q are slow

The above phenomenon is due to

(A) The states of multiplicity vary with energy of excitation

(B) Transition between the states of different multiplicity is a faster process.

(C) Transition between the states of different multiplicity is as fast as that between states of similar multiplicity

(D) Transition between the states of different multiplicity is a slower process

Self absorption of the fluorescence radiation can be decreased by

(A) Filtration

(B) Dilution

(C) Monochromatic radiation

(D) Complexation

Resonant broadening is the broadening of the spectral line due to

(A) Movement of gaseous atoms

(B) Collisions between atoms and other gas molecules

(C) Collision between analyte atoms

(D) Formation of diatoms

Which of the following source is continuous source for fluorometry

(A) Deuterium discharge lamp

(B) Xenon arc lamp

(C) Mercury vapor lamp

(D) Hollow cathode lamp