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?

<p>Chemiluminescence (C)</p> Signup and view all the answers

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

<p>Bioluminescence (D)</p> Signup and view all the answers

What is the inner filter effect?

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

What advantage does fluorometry have over spectrophotometry?

<p>Higher sensitivity (D)</p> Signup and view all the answers

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

<p>Xenon-Arc Lamp (D)</p> Signup and view all the answers

What is arc wandering?

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

What is arc fluttering?

<p>Rapid lateral displacement of the arc (C)</p> Signup and view all the answers

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