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Questions and Answers
What is the purpose of the iodine value test for oils?
What is the purpose of the iodine value test for oils?
- To detect the presence of glycerol
- To determine the degree of unsaturation of a fatty acid (correct)
- To test for emulsion formation of oil
- To observe the transparent area formed when oil is applied to paper
What does the oil spot test on paper detect?
What does the oil spot test on paper detect?
- The presence of glycerol
- The transparent area formed due to the ability of fatty substances to overcome the hydrogen bonds of cellulose (correct)
- The degree of unsaturation of a fatty acid
- The formation of a temporary emulsion
What is the outcome of the alkaline potassium permanganate test for a given organic compound?
What is the outcome of the alkaline potassium permanganate test for a given organic compound?
- The detection of a bad smell indicating the presence of acrolein
- The pink color disappears for a saturated compound and persists for an unsaturated compound
- The pink color persists for a saturated compound and disappears for an unsaturated compound (correct)
- The formation of a permanent emulsion for a saturated compound and a temporary emulsion for an unsaturated compound
What is the purpose of adding NaOH and water in the test for emulsion formation of oil?
What is the purpose of adding NaOH and water in the test for emulsion formation of oil?
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What is the purpose of the flame heating step in the detection of glycerol?
What is the purpose of the flame heating step in the detection of glycerol?
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