Test For Aldehydes

IMPORTANT

Test For Aldehydes: Overview

This Topic covers sub-topics such as Identification of Aldehydes and Ketones by Benedict's Solution, Identification of Aldehydes and Ketones by Fehling's Solution and, Schiffs’ Reagent Test for Aldehydes and Ketones

Important Questions on Test For Aldehydes

EASY
IMPORTANT

What happens when Schiff's Reagent reacts with aldehyde?

EASY
IMPORTANT

Write the reaction of an aldehyde with Schiff's Reagent.

EASY
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The pink colour product obtained by the reaction of acetaldehyde with Schiff's Reagent.

EASY
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The colour of the product obtained by the reaction of acetaldehyde with Schiff's Reagent is 

EASY
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What is the colour of the product obtained by the reaction of acetaldehyde with Schiff's Reagent.

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Write the chemical reaction for the reduction of Benedict's solution by aldehyde.

EASY
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When ethanal is heated with Fehling's solution, then the precipitate obtained is of:

HARD
IMPORTANT

Predict the major product in the following reaction.

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HARD
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A carbonyl compound 'A' having molecular formula C5H10O forms crystalline precipitate with sodium bisulphite and gives positive iodoform test but does not reduce Fehling solution. Write the structure of the carbonyl compound. 

MEDIUM
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Explain the reduction of Tollen's reagent reaction and give equation also.

HARD
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"Aldehydes are good reducing agents". Explain it by giving two reactions.

MEDIUM
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What is Tollen's reagent and Fehling's solution.

EASY
IMPORTANT

C3H6O did not give a silver mirror with Tollen's reagent, but gave an oxime with hydroxylamine. It can give positive