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Carbonyl Compounds

Total questions: 10

Worksheet time: 13mins

Name
Class
Date
1.

The functional group of aldehydes and ketones is

a)

carboxyl

b)

carbonyl

c)

hydroxyl

d)

carboalkoxy

2.

What is the IUPAC name of the compound given:

a)

2-pentanone

b)

5-pentanone

c)

hexanone

d)

2-hexanone

3.

Choose a FALSE statement about carbonyl compounds.

a)

Ketones can easily undegoes oxidation reaction

b)

Aldehydes are more reactive to undergoes nucleophilic addition compared to ketones

c)

Carbonyl is the functional group of aldehydes and ketones

d)

Structure of ketone consist of carbon carbonyl which attach to two alkyl/aryl groups

4.

Brady's test is used to

a)

Identify the presence of carbonyl functional group in compound

b)

Identify the presence of methyl carbonyl group in compound

c)

Identify the presence of carbon-carbon double bond in compound

d)

Identify the aliphatic aldehyde

5.

All the following pairs of compound can react to form carbonyl EXCEPT

a)

CH3CH2CH2CH2OH reacts with PCC in CH2Cl2

b)

C6H6 reacts with acyl chloride in the presence of catalyst

c)

CH3CH2CH2OH reacts with hot and acidified K2Cr2O7

d)

Ozonolysis of CH3CH=C(CH3)CH3

6.

Conversion of aldehyde to alcohol is

a)

Oxidation reaction

b)

Reduction reaction

c)

Esterification reaction

d)

Polymerisation reaction

7.

One of the nucleophilic addition of carbonyl compound is reaction with alcohol. The product form when ketone reacts by this reaction is

a)

acetal

b)

ketal

c)

hemiacetal

d)

hemiketal

8.

The reagent used in Brady's test is _________ and it is ________reaction.

a)

hydrazine, condensation

b)

hydroxylamine. condensation

c)

2,4-dinitrophenylhydrazine, condensation

d)

phenylhydrazine, condensation

9.

The followings is oxidation of aldehydes EXCEPT

a)

Fehling's test

b)

Schiff's test

c)

Tollens' test

d)

Brady's test

10.

An aliphatic aldehydes gives positive result in Fehlings' test. It shows the formation of

a)

Silver mirror on the wall of test tube

b)

Light Yellow precipitate

c)

Brick-red precipitate

d)

Orange precipitate