Question # 1

Aldehydes is distinguished from ketones by using

Choose an answer

Tollen's reagent

Benedict reagent

Fehling solution

All of the above

A nucleophilic reagent will readily Attack

Choose an answer

Ethylene

Ethanal

Ethanol

Ethylamine

The carbon atom of a carbonyl group is

Choose an answer

Sp hybridized

Sp²hybridized

Sp³hybridized

None of these

Which compound on reaction with hydrogen cyanide produces a compound with a chiral centre

Choose an answer

Ch₃CHO

CH₃CH₂COCH₂CH₃

CH₃CO₂CH₃

HCHO

Aromatic aldehydes undergo disproportionation in presence of sodium or potassium hydroxide to give corresponding alcohol and acid. The reaction is known as

Choose an answer

Wurtz reaction

Cannizzaro reaction

Friedel Craft reaction

Claisen reaction

Clemensen's reduction of ketones is carried out in

Choose an answer

H₂with Pd catalyst

Glycol with KOH

LiAIH₄in water

Zn-Hg with conc. HCl

Ketones are prepared by the oxidation of:

Choose an answer

Primary alcohol

Secondary alcohol

Tertiary alcohol

None of these

Which reaction yields Bakelite?

Choose an answer

Urea with HCHO

Tetramethyl glycol with Hezamethylene diisocyanate

Phenol and HCHO

Ethylene glycol and Dimethylterephthalate

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

Choose an answer

Pri-alcohol

Sec-Alcohol

Ter-alcohol

Carboxylic

Cannizzaro reaction is not given by

Choose an answer

Trimethyl acetaldehyde

Acetaldehyde

Benzaldehyde

Formaldehyde

Ketones are reduced to

Choose an answer

Primary alcohol

Secondary alcohol

Tertiary alcohol

All of these

Hydrogenation of bezoyl chloride in presence of Pd on BaSO₄gives

Choose an answer

Benzyl alcohol

Benzaldehyde

Benzoic acid

Phenol

Choose an answer

Q and R Q and R

R only Q and R

Q and R R only

Q only R only

Ketones are prepared by the oxidation of

Choose an answer

Primary alcohol

Secondary alcohol

Tertiary alcohol

None of these

The addition of HCN to carbonyl compounds is an example of

Choose an answer

Nucleopihlic substituion

Electrophilic addition

Nueleophilic addition

Electrophilic substitution

C₂H₅CHO and (CH₃)₂CO can be distunguished by testing with

Choose an answer

Phenyl hydrazine

Hydroxylamine

Fehling solution

Sodium bisulphate

The colour of ppts formed by Fehling's test is

Choose an answer

Brick red

Red

Yellow

Orange

Which is used for the reduction of aldehydes and ketones

Choose an answer

NaBH₄

Pt/Pd

Ni

All of these

Which of the following is hypnotic?

Choose an answer

Acetaldehyde

Metaldehyde

Paraldehyde

None

In formadaldehyde and KOH are heated then we get

Choose an answer

Acetylene

Methane

Methyl alcohol

Ethyl formate

Ethanal may be converted into a three-carbon acid in a two-step process.

Which compound is the intermediate

Choose an answer

CH₃CO₂H

CH₃CN

CH₃CH₂CN

CH₃CH(OH)CN

In Tolten's best, the end product is ______ formed

Choose an answer

White ppts

Red ppts

Yellow ppts

Silver mirror

Aldelydes are the oxidation product of

Choose an answer

P-alcohols

s-alcohols

ter-alcohols

carboxylic acids

Which one of the following statement is wrong regarding differences between aldehydes and ketones

Choose an answer

Aldehydes undergo reduction to form primary alcohols while ketones undergo reduction to form secondary alcohols

Aldehydes undergo oxidation to form acids having less number of carbon atoms while ketones undergo oxidation to form acids having same number of carbon atoms

Aldehydes give positive silver mirror test while ketones give negative -mirror test

Aldehydes can undergo polymerization while ketones cannot undergo polymerizarion

Condensation of aldeydes withα-hydrogen gives:

Choose an answer

Acetal

Ketal

Aldol

Cannizzaro product

Give IUPAC name fo Acetone

Choose an answer

Ethanal

Propanone

Butanone

Propanal

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH₄or LiAIH₄?

Choose an answer

1-propanol

2-propanol

2-Methyl-2-propanol

Ethanol

A compound possessingα-hydrogen atom, in the presence of dilute alkali formsβ-hydroxy aldehyde. This product on heating with dilute acid forms an unsaturated crotonaldehyde. The compound is

Choose an answer

CH₃CHO

CH₃CH₂CHO

CH₂= CH - CHO

HC = C - CHO

Aldehydes and ketones are carbonyl compounds. Which of them react both with NaBH₄and with Tollen's reagent

Choose an answer

Both aldehydes and ketones

Aldehydes only

Ketones only

Neither aldehydes nor ketones

More Classes

Other Links

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

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer