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The product obtained when propanamide is distilled with phosphorus pentoxide is

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Important Questions on Aldehydes, Ketones and Carboxylic Acids

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Alpha Question Bank for Engineering: Chemistry>Chapter 27 - Aldehydes, Ketones and Carboxylic Acids>Exercise-4>Q 58

What is the major product obtained from the following reaction?

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Alpha Question Bank for Engineering: Chemistry>Chapter 27 - Aldehydes, Ketones and Carboxylic Acids>Exercise-4>Q 59

What is the major product obtained from the following reaction? ?

CH3COCH2COOH→heat Product

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Alpha Question Bank for Engineering: Chemistry>Chapter 27 - Aldehydes, Ketones and Carboxylic Acids>Exercise-4>Q 60
CH3CH2CHOHCHCH32+CH3COCl→baseCH3CH2CHOCOCH3CHCH32+HCl
In the above reaction, if the reactant alcohol is pure R-isomers, the product would.
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Alpha Question Bank for Engineering: Chemistry>Chapter 27 - Aldehydes, Ketones and Carboxylic Acids>Exercise-4>Q 61

The major product (Y) of the following reaction is -

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Alpha Question Bank for Engineering: Chemistry>Chapter 27 - Aldehydes, Ketones and Carboxylic Acids>Exercise-4>Q 62
4-amino-3-methylbutanoic acid is treated with thionyl chloride followed by ammonia to obtain compound "X". "X" on reaction with bromine in an alkaline medium gave the compound "Y". For estimation "Y", was titrated with perchloric acid. The volume of 0.1 M perchloric acid needed to react with 0.22 g of "Y" is
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Alpha Question Bank for Engineering: Chemistry>Chapter 27 - Aldehydes, Ketones and Carboxylic Acids>Exercise-4>Q 63
When semicarbazide reacts with a ketone (or aldehyde) to form semicarbazone. Only one nitrogen atom of semicarbazide acts as a nucleophile and attacks the carbonyl carbon of the ketone. The product of the reaction, consequently, is R2C=N-NH-CONH2 rather than R2C=NCONH-NH2. What factor account for the fact that two nitrogen atoms of semicarbazide are relatively non-nucleophilic?
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Alpha Question Bank for Engineering: Chemistry>Chapter 27 - Aldehydes, Ketones and Carboxylic Acids>Exercise-4>Q 64

Arrange the following compounds in decreasing orders of Keq  for hydrate formation.

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Alpha Question Bank for Engineering: Chemistry>Chapter 27 - Aldehydes, Ketones and Carboxylic Acids>Exercise-4>Q 65
Which acetone when treated with excess of benzaldehyde in the presence of base results in the crossed condensation which adds two equivalents of benzaldehyde and expels two equivalents of water and forms [X]. Identify the structures of [X] when [X] reacts with NH2OH. How many stereo isomers are formed?