Chemistry: Azo Dyes and Two-Photon Photodynamic Therapy
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Questions and Answers

What is the toxic effect of Azo dyes a reason for?

  • Increasing use of Azo dyes in the pharmaceutical industry
  • Decreasing use of Azo dyes in the pharmaceutical industry (correct)
  • Using Azo dyes for the treatment of insomnia
  • Applying Azo dyes in thermal transfer printers

    • Which functional group does Benzoic Acid possess?

  • Carboxylic acid group (correct)
  • Amine group
  • Aldehyde group
  • Alcohol group

    • What is the primary source from which the name 'Benzoic Acid' is derived?

  • Gum benzoin (correct)
  • Salkowski
  • Castoreum
  • Nostradamus

    • Who discovered the antifungal abilities of Benzoic Acid?

    <p>Salkowski</p> Signup and view all the answers

    In which industry are Azo dyes widely used for dyeing purposes?

    <p>Textile industry</p> Signup and view all the answers

    Which application does NOT involve the use of Azo dyes?

    <p>Calibrating a bomb calorimeter</p> Signup and view all the answers

    How is benzoic acid part of Whitfield's ointment for fungal infections?

    <p>As a constituent</p> Signup and view all the answers

    Which metal can catalyze the partial oxidation process of toluene to produce benzoic acid industrially?

    <p>Cobalt</p> Signup and view all the answers

    How can benzoic acid be prepared from benzyl chloride?

    <p>Oxidation in the presence of alkaline KmnO4</p> Signup and view all the answers

    What reaction produces equal amounts of benzoate and benzyl alcohol?

    <p>Cannizzaro reaction</p> Signup and view all the answers

    What is the most common application of benzoic acid in industrial settings?

    <p>Food preservative</p> Signup and view all the answers

    Which compound can increase in human urine when exposed to Toluene or Benzoic Acid?

    <p>Hippuric acid</p> Signup and view all the answers

    What is the physical state of Para Red dye?

    <p>Solid</p> Signup and view all the answers

    Who discovered Para Red dye?

    <p>Von Gallois and Ullrich</p> Signup and view all the answers

    Why is Diazonium salt kept in an ice bath during the conversion process to para red dye?

    <p>To prevent decomposition</p> Signup and view all the answers

    Which group is removed in the second step of para red dye synthesis?

    <p>Ketone group</p> Signup and view all the answers

    What does the theoretical yield of Nitroacetanilide involve the addition of?

    <p>Nitric Acid</p> Signup and view all the answers

    What is the classification criteria for Azo dyes?

    <p>The number of azo groups present in the structure</p> Signup and view all the answers

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