Solution Contamination
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Questions and Answers

Which of the following can contribute to the contamination of a solution?

  • Raw materials used in the manufacture of solutions (correct)
  • The presence of bacteria in the environment
  • The use of dispersing agents
  • The introduction of microorganisms by consumers

    • What are some factors that may cause product contamination?

  • Raw materials and consumer use
  • Equipment and consumer use
  • Raw materials, equipment, and personnel (correct)
  • Equipment and environment

    • How can consumer use contribute to the contamination of a solution?

  • By introducing microorganisms (correct)
  • By contaminating the environment
  • By using dispersing agents
  • By using raw materials

    • Which of the following is a characteristic of ethanol as a preservative?

    <p>It needs a relatively high concentration (&gt; 10%) to be effective</p> Signup and view all the answers

    Which of the following is true about benzoic acid and sorbic acid as preservatives?

    <p>Their use is restricted to preparations with a pH below 4.5</p> Signup and view all the answers

    Which of the following is true about parabens as preservatives?

    <p>They are esters of p-hydroxybenzoic acid</p> Signup and view all the answers

    Which of the following can initiate the oxidation reaction of vitamins, essential oils, and fats and oils?

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

    How can the effect of trace metals, such as Fe and Cu, be minimized in the oxidation process?

    <p>Using citric acid or EDTA</p> Signup and view all the answers

    Which of the following can be used as antioxidants in the oxidation process?

    <p>Propyl esters of gallic acid</p> Signup and view all the answers

    Which of the following is a method used to prepare solutions of this type?

    <p>Dissolving the solute in a suitable solvent by stirring or heating</p> Signup and view all the answers

    What is the purpose of adding other ingredients to the solvent in these solutions?

    <p>To stabilize the active ingredient</p> Signup and view all the answers

    How are plant or animal products typically prepared in this context?

    <p>By suitable extraction process</p> Signup and view all the answers

    Which method is used to prepare solutions by dissolving the solute in a suitable solvent?

    <p>Simple solutions</p> Signup and view all the answers

    What is the purpose of adding other ingredients to the solvent in simple solutions?

    <p>To solubilize the active ingredient</p> Signup and view all the answers

    Which solute-solvent combination results in the formation of more soluble polyiodides?

    <p>Iodine in presence of KI</p> Signup and view all the answers

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