15 Questions
Which of the following can contribute to the contamination of a solution?
Raw materials used in the manufacture of solutions
What are some factors that may cause product contamination?
Raw materials, equipment, and personnel
How can consumer use contribute to the contamination of a solution?
By introducing microorganisms
Which of the following is a characteristic of ethanol as a preservative?
It needs a relatively high concentration (> 10%) to be effective
Which of the following is true about benzoic acid and sorbic acid as preservatives?
Their use is restricted to preparations with a pH below 4.5
Which of the following is true about parabens as preservatives?
They are esters of p-hydroxybenzoic acid
Which of the following can initiate the oxidation reaction of vitamins, essential oils, and fats and oils?
Heat
How can the effect of trace metals, such as Fe and Cu, be minimized in the oxidation process?
Using citric acid or EDTA
Which of the following can be used as antioxidants in the oxidation process?
Propyl esters of gallic acid
Which of the following is a method used to prepare solutions of this type?
Dissolving the solute in a suitable solvent by stirring or heating
What is the purpose of adding other ingredients to the solvent in these solutions?
To stabilize the active ingredient
How are plant or animal products typically prepared in this context?
By suitable extraction process
Which method is used to prepare solutions by dissolving the solute in a suitable solvent?
Simple solutions
What is the purpose of adding other ingredients to the solvent in simple solutions?
To solubilize the active ingredient
Which solute-solvent combination results in the formation of more soluble polyiodides?
Iodine in presence of KI
Test your knowledge on solution contamination with this quiz! Learn about the various factors that can contribute to contamination, including raw materials, equipment, environment, personnel, and consumer use.
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