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. Common names of aldehydes are given by corresponding:

Carboxylic acid

Ester

Alcohol

Ketone

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Question 1 of 15

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

Grignard's reagent

Tollen's reagent

Benedict's reagent

Fehling's reagent

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Question 2 of 15

3. Carboxyl compounds have functional group:

RCOR

All

R-C-X

R-CH=O

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Question 3 of 15

4. Cannizzaro's reaction is not given by:

Acetaldehyde

Formaldehyde

Benzaldehyde

Trimethyl

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Question 4 of 15

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

Brick red

Yellow or red ppt

White ppt

Silver mirror

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Question 5 of 15

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

Weak

Intermediate of aldehydes

Weaker

Strong

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Question 6 of 15

7. Ketones react with sodium nitroprusside alkaline giving precipitate:

Yellow or red ppt

White ppt

Wine red or orange red

Silver ppt

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Question 7 of 15

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

Silver mirror

Yellow or red ppt

Brick red

White ppt

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Question 8 of 15

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

Addition

Reduction

Neutralization

Substitution

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Question 9 of 15

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

Polymerization

Addition of hydrogen

Addition of ammonia

All

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Question 10 of 15

11. Which reaction is base catalysed?

Addition of HCN

Addition of sodium bisulphate

Addition of Grignard's reagent

All

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Question 11 of 15

12. Aldehydes react with tollen's reagent forming:

White red

Silver mirror

Yellow or red ppt

Brick red

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Question 12 of 15

13. A substance having only sigma bond gives reaction:

Neutralization

Substitution

Addition

Reduction

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Question 13 of 15

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

Silver mirror

Brick red

Yellow or red ppt

White ppt

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Question 14 of 15

15. Aldehydes are oxidized to give:

Sec-alcohol

Ter-alcohol

Carboxylic acid

Primary alcohols

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Question 15 of 15

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