12 Questions
Match the following with their characteristics:
Fehling's solution = Negative for ketone Tollens' test = Positive for ketone having alpha hydroxy group
Match the following with their reactions:
Aldehyde = Positive in Tollens' test Ketone = No reaction with Fehling's solution Ketone with alpha hydroxy group = Positive in Tollens' test
Match the following with their test results:
Fehling's solution test = Shows no reaction with ketones Tollens' test = Negative result with ketones
Fehling solution A is aqueous copper sulphate and Fehling solution B is alkaline sodium potassium tartarate. These two solutions are mixed in equal amounts before ______.
test
Ketones are not easily oxidized, thus they do not reduce Fehling’s solution or Tollen’s reagent. But a-hydroxy ketones readily ______.
reduce
Sodium nitroprusside test is positive for ______ compounds.
carbonyl
Treat some organic compound with few drops of freshly prepared solution of sodium nitroprusside followed by excess of NaOH solution. A wine-red color is ______.
obtained
Jones (Chromic Acid) Oxidation Test for Aldehydes is positive for ______.
aldehyde
A positive test for aldehydes with Jones (Chromic Acid) Oxidation Test is marked by the formation of a ______ color.
green
Primary and secondary alcohols give a positive test with Jones (Chromic Acid) Oxidation Test, but ______ alcohols do not.
tertiary
Schiff test for aldehydes involves treating the compound with ______ followed by excess of NaOH solution.
sodium nitroprusside
A positive Schiff test for aldehydes results in the formation of a ______-red color.
wine
Learn about Fehling's test and how it is used to differentiate between different types of carbonyl compounds like ketones and aldehydes. Understand why ketones do not easily react with Fehling's solution, except for alpha-hydroxy ketones. Explore the chemical reactions involved in Fehling's test.
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