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MCQ on Atomic spectroscopy: Page-4

Atomic emission spectroscopy is

(A) The measurement of intensity of emitted light at a particular wave length from the atoms that are exited thermally.

The measurement of absorbance of emitted light at a particular wave length from the atoms that are exited thermally.

The measurement of intensity of emitted light at a particular wave length from the atoms that are exited by monochromatic light.

The measurement of intensity of absorbed light at a particular wave length from the atoms that are exited thermally.

Ionization interference can be eliminated by addition of

(A) EDTA

(B) Cryolite

(C) Cesium salts

(D) Lanthanum chloride

In atomic emission spectroscopy the emission due to the electronic transition of

(A) Singlet ground state to singlet exited state

(B) singlet exited state to singlet ground state.

(C) Singlet ground state to triplet exited state

(D) Triplet exited state to singlet ground state.

In atomic absorption spectroscopy the most strongly absorbed light is called as

(A) Resonance line

(B) Base line

(C) stokes line

(D) anti stokes line

In atomic emission spectroscopy the flame acts as

(P) Source of excitation (Q) Source of light

(R) source of vaporization (S) Source of ionization

(A) P,Q

(B) R,S

(C) Q,S

(D) R,P