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Luminescence Unveiled

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Questions and Answers

Which type of luminescence involves the emission of light without producing heat?

Fluorescence
Phosphorescence
Chemiluminescence (correct)
Bioluminescence

Which type of luminescence involves the emission of light when the excited energy returns to the ground after absorbing light?

Bioluminescence
Fluorescence (correct)
Chemiluminescence
Phosphorescence

Which type of luminescence involves the atom being excited at a triplet stage and returning to the ground state after absorbing light?

Fluorescence
Chemiluminescence
Phosphorescence (correct)
Bioluminescence

Which type of luminescence involves the excited atom emitting light after returning to the ground state and is caused by a chemical reaction?

Chemiluminescence (C) Signup and view all the answers

Which type of luminescence involves biomolecules and is similar to chemiluminescence?

Bioluminescence (D) Signup and view all the answers

What is the inner filter effect?

The nonlinear relationship between fluorescence intensity and concentration (C) Signup and view all the answers

What advantage does fluorometry have over spectrophotometry?

Higher sensitivity (D) Signup and view all the answers

What is the most commonly used excitation source in luminescence studies?

Xenon-Arc Lamp (D) Signup and view all the answers

What is arc wandering?

Movement of the attachment point of the arc on the cathode surface (D) Signup and view all the answers

What is arc fluttering?

Rapid lateral displacement of the arc (C) Signup and view all the answers

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