Question # 1

The carbon atom of a carbonyl group is

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sp hybridized

sp²hybridized

sp³hybridized

none of these

Which one has yellow or orange cyrstalline ppt

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Acetone hydrazone

2, 4 DNPH

Ethanal oxime

Bisulphite addition product

Acetaldehyde can be prepared by the oxidation of.

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Acetic acid

Ethanol

1- Proponal

Ethanonic acid

Which of the following has highest boiling point

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Methanal

Ethanal

Propanal

2-hexanone

Which one of the following compounds is not derivative of NH3.

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Aniline

Hydrazine

Phenyl hydrazine

Picric acid

Acetaldehyde react, with Grignard reagent to form

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Primary alcohol

Secondary alcohol

Ter alcohol

Carboxylic acids

A cyanohydrin is formed by the reaction of

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Alcohol and HCN

Ketone and NH3

Aldehyde and NH2OH

Aldehyde and HCN

Which one of the following compound does not react with NaOH and I2 and also does not form Iodoform.

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C2H5OH

CH3CHO

CH3-CO-CH3

C2H5-O-C2H5

Which substance reacts with sodium nitroprusside.

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Ethanol

Acetaldehyde

Dimethyl ketone

Methanol

Silver mirror test is given by

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Ethers

Ketones

Acids

Aldehydes

What product is formed by the dry distillation of calcium acetate.

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CH3CH2COOH

CH3COOH

CH3COCH3

CH3CH2CHO

Industrially ethanal is prepared by air oxidation of.

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Ethane

Ethene

Ethyne

Acetic acid

Acetaldehyde undergoes, aldol condensation in the presence of.

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dil HNO3

DIL NaOH

dil HCl

Conc. H2SO4

when aldehydes react with Tollen's reagent.

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A ketone is produced

An alcohol is produced

Ag ions are produced

Ag ions are reduced

On heating aldehydes with Fehling's solution we get a precipitate whose colour is

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Pink

Black

Yellow

Brick red

All of the following tests are used to identify aldehydes except.

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Tollen's test

Fehling test

Baeyer's test

Benedict test

Which of the following reagents will reacts with both aldehydes and ketones.

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Grignard reagent

Tollens's reagent

Fehling's reagent

Benedict 's reagent

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