Organic Chemistry Aldehydes and Ketones Online Quiz Test MCQs

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Organic Chemistry Aldehydes and Ketones Online Quiz Test MCQs

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Chemistry

1. A substance having only sigma bond gives reaction:

Substitution

Reduction

Addition

Neutralization

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Question 1 of 15

2. Which of the following reagent will react with both aldehyde and ketones?

Fehling's reagent

Grignard's reagent

Tollen's reagent

Benedict's reagent

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Question 2 of 15

3. Common names of aldehydes are given by corresponding:

Carboxylic acid

Ester

Alcohol

Ketone

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Question 3 of 15

4. Aldehydes and methyl ketones reacts with saturated solution of sodium bisulphate forming precipitate:

Silver mirror

White ppt

Yellow or red ppt

Brick red

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Question 4 of 15

5. Cannizzaro's reaction is not given by:

Acetaldehyde

Trimethyl

Benzaldehyde

Formaldehyde

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Question 5 of 15

6. Which reaction is base catalysed?

Addition of HCN

All

Addition of Grignard's reagent

Addition of sodium bisulphate

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Question 6 of 15

7. Aldehydes are oxidized to give:

Primary alcohols

Sec-alcohol

Carboxylic acid

Ter-alcohol

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Question 7 of 15

8. Aldehydes react with tollen's reagent forming:

White red

Brick red

Silver mirror

Yellow or red ppt

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Question 8 of 15

9. A substance having sigma and pi bond in it gives:

Substitution

Reduction

Neutralization

Addition

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Question 9 of 15

10. Aliphatic aldehydes reacts with Fehling solution and Benedict solution forming precipitate:

Yellow or red ppt

White ppt

Brick red

Silver mirror

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Question 10 of 15

11. Carboxyl compounds have functional group:

R-CH=O

All

R-C-X

RCOR

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Question 11 of 15

12. Ketones react with sodium nitroprusside alkaline giving precipitate:

Silver ppt

Wine red or orange red

White ppt

Yellow or red ppt

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Question 12 of 15

13. Aldehydes & ketones react with 2, 4-DNPH forming precipitates of 2, 4-dinitro-phenyl hydrione of colour:

Silver mirror

Brick red

Yellow or red ppt

White ppt

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Question 13 of 15

14. A base catalysed nucleophilic addition reaction will take place with a nucleophilic reagent:

Weaker

Weak

Strong

Intermediate of aldehydes

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Question 14 of 15

15. The reaction of aldehydes which are (is) base catalysed addition:

Polymerization

All

Addition of hydrogen

Addition of ammonia

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Question 15 of 15

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