Question # 1

The carbon of a carbonyl group is:

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sp hybridized

sp²hybridized

sp³Hybidized

None of these

Reaction of Grignard's reagent with ketones gives: Reaction of Grignard's reagent with formaldehyde gives:

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Pri-alcohol

Sec-Alcohol

Ter-alcohol

Carboxylic

Which of the following compounds will react with reagent ?

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CH₃ CO H

CH₃ CO CH₃

CH_{3 COOH}

CH₃CO CH₂CH₃

Which compound would undergo nucleophilic addition

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Ethene, C₂H₄

Bromoethane, C₂H₅Br

Ethanal, CH₃CHO

Ethane, C₂H₆

Isopropyl alcohol on oxidation forms

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Acetone

Ether

Ethylene

Acetaldehyde

Which of the following compounds does not react with NaHSO₃?

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C₆H₅CHO

Acetophenone

Acetone

Acetaldehyde

Acetone is prepared by

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Oxidation of n-propyl alcohol

Oxidation of acetaldehyde

Pyrolysis of calcium acetate

Pyrolysis of calcium acetate as well as acetic acid

Clemensen's reduction of ketones is carried out in

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H₂with Pd catalyst

Glycol with KOH

LiAIH₄in water

Zn-Hg with conc. HCl

At room temperature formaldehyde is

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Gas

Liquid

Solid

None of the above

During the mechanism of aldol condensation a/an ______ is formed

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Oxide

Alkali

Alkoxide ion

None of these

Aldehydes are produce in atmosphere by

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Oxidation of secondary alcohols

Reduction of alkenes

Reaction of oxygen atoms with hydrocarbons

Reaction of oxygen atoms with ozone

Reduction with aluminium isopropoxide in excess of Isopropyl alcohol is called Meerwein Ponndroff-Verley reduction (MPV). What will be the final product when cyclohex-2-enone is selectively reduces in MPV reaction?

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Cyclohexanol

Cyclohex-2-enol

Cyclohexanone

Benzene

Silver mirror test is applied for

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Aldehydes

Alcohols

Acids

Esters

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2-chlorobutanal

alfa-chlorobutanal

2-chlorobutyraldehyde

alfa- chlorobutyraldehyde

Which of these reactions is shown by buranone, CH₃COCH₂CH₃

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On warming with acidified potassium dichromative (IV) the solution turns green

On heating with Fehling's reagent a red precipitate is formed

With 2,4-dinitrophenlhydrazine reagent an orange precipitate is formed

With hydrogen cyanide an aldehyde is formed

Chromic acid used to oxidize

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Aldehyde

Ketone

Both a and b

None of these

On heating acetaldehyde with ammonical silver nitrate solution, we get

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CH₃OH

Silver acetate

HCHO

Silver mirror

Self condensation of acetaldehyde in the presence of dilute alkalies gives

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An acetal

An aldol

Mesitylene

Propionaldehyde

Which of the following reactions is used for detecting presence of carbonyl group?

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Reaction with hydroxylamine

Reaction with hydrazine

Reaction with phenyl hydrazine

All

Hydrogenation of bezoyl chloride in presence of Pd on BaSO₄gives

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Benzyl alcohol

Benzaldehyde

Benzoic acid

Phenol

Which isomer of C₅H₁₁OH gives, one dehydration, the greastest number of different alkenes

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ECAT Chemistry Chapter 23 Aldehydes and Ketones Online Test MCQs With Answers

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