Question # 1

Aldehyde react with hydroxyl amine in acidic solution to give

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An oxime

Aldol

Polymer

Acetic acid

Which reagent will react with both aldehyde and ketones

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Grignard reagent

Tollen's reagent

Fehling's reagent

Benedict's reagent

Which substance is used for silvering of mirror.

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Acetaldehyde

Ethanol

Ethylene glycol

Acetone

All of the followings react with Fehling solution except

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CH2CH2CHO

CH3-CH2COCH3

HCHO

CH3-CHO

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

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CH3CH2COOH

CH3COOH

CH3COCH3

CH3CH2CHO

Paraldehyde is polymer of.

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HCHO

CH3CHO

CH3COCH3

CH3CH2-CH2OH

Paraldehyde is used as a

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Medicine

Poison

Polymer

Dye

Oxime is an addition product obtained when aldehydes react with.

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HCN

NH2OH

Phenyl hydrazine

H2O

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

Which of the following compounds will not give iodoform test on treatment with I2/NaOH

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Acetaldehyde

Acetone

Butanone

3-Pentaneone

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

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Pink

Black

Yellow

Brick red

A snake was preserved in a solution and was placed in biology laboratory. The solution is.

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De ionized water

Fehling solution

Formalin

Chloroform

Formalin is a 40% solution of

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CH₃CHO

CH₃OH

HCHO

CH₃OCH

Acetaldehyde react, with Grignard reagent to form

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Primary alcohol

Secondary alcohol

Ter alcohol

Carboxylic acids

When benzaldehyde is converted to benzyl alcohol by reading with NaOH the reaction is known as.

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Cannizzaro reaction

Wurtz reaction

Wol;ficisthner reaction

Aldol reaction

Acetone reacts with HCN to form a cyanohydrin. It is an example of.

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Electrophilic addition

Electrophilic substitution

Nucleophilic addition

Nucleophilic substitution

Formalin is

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10% solution of formaldehyde in water

20% solution of formaldehyde in water

40% solution of formaldehyde in water

60% solution of formaldehyde in water

Which of the following will have the highest boiling point.

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Methanal

Ethanal

Propanal

2-Hexanone

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