Organic Chemistry: Aldehydes, Ketones, and Carboxylic Acids - SS3 Chemistry Past Questions and Answers - page 1
Which of the following functional groups is present in both aldehydes and ketones?
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Alcohol
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Carboxylic acid
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Carbonyl
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Which of the following compounds is an aldehyde?
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Acetone
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Ethanol
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Propanal
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Which of the following reagents can be used to distinguish between an aldehyde and a ketone?
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Tollen's reagent
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Fehling's solution
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Sodium hydroxide
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What is the general formula of aldehydes?
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R-OH
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R-CO-R
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R-CO-R'
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Which of the following reactions is a characteristic test for aldehydes?
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Addition of ammonia
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Formation of a silver mirror with Tollens's reagent
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Esterification reaction
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Which of the following compounds is a ketone?
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Methanal
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Ethanal
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Propanone
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Which of the following aldehydes is used as a preservative in the food industry?
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Formaldehyde
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Benzaldehyde
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Acetaldehyde
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Aldehydes and ketones can be reduced to form:
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Alcohols
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Carboxylic acids
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Esters
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Which of the following reactions is used to distinguish between an aldehyde and a ketone?
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Formation of a silver mirror with Tollens's reagent
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Formation of a precipitate with Fehling's solution
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Formation of a carboxylic acid with a primary alcohol
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Which of the following aldehydes is commonly found in cinnamon oil?
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Formaldehyde
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Benzaldehyde
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Acetaldehyde
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