ALDEHYDES AND KETONES

10
Created on By buzzerkings

ALDEHYDES AND KETONES

1 / 39

Iodoform can be prepared from all except:

2 / 39

Which is the major product formed when acetone is heated with iodine and potassium hydroxide?

3 / 39

Which of the following reagents can distinguish between acetaldehyde and benzaldehyde?

4 / 39

Which of the following does not react with Fehling's solution?

5 / 39

Reaction of acetaldehyde with HCN followed by hydrolysis gives a compound which shows:

6 / 39

The increasing order of the rate of HCN addition to compounds I-IV is:

(I) HCHO (II) CH3COCH3

(III) PhCOCH3 (IV) PhCOPh 

7 / 39

An alkene, C7H14, on reductive ozonolysis gave propanal and a ketone. The probable ketone is: 

8 / 39

Which reactive intermediate is formed during the condensation reaction between acetaldehyde and formaldehyde?

9 / 39

The most suitable reagent for the conversion of

RCH2OH →RCHO is:

10 / 39

Which of the following aldehydes contains α-carbon atom but does not have any α-H atom?

11 / 39

A new carbon-carbon bond is not formed in

12 / 39

The least reactive compound towards nucleophilic addition reactions is:

13 / 39

Which is a mixed ketone? 

14 / 39

The C=O bond and C=C bond are similar in which of the following ways?

15 / 39

An aqueous solution containing about 40% of formaldehyde and a little alcohol is sold under the name of: 

16 / 39

Ketones produced a wine red or orange red color on adding:

17 / 39

Which compound gives brick red precipitate of cuprous oxide with Benedict's solution:

18 / 39

The nucleophilic addition reaction of carbonyl group are catalysed by:

19 / 39

Which one of the following reactions is not given by formaldehyde? 

20 / 39

Calcium acetate on dry distillation gives:

21 / 39

Formaldehyde when reacted with methyl magnesium bromide gives:

22 / 39

At room temperature, formaldehyde is a:

23 / 39

Which of the following carbonyl compounds undergo haloform reaction? 

24 / 39

Aldol condensation cannot occur between:

25 / 39

A compound containing aldehydic group and alcoholic group is known as:

26 / 39

Aldehydes are oxidized to carboxylic acid by oxidizing agent like Fehling solution while the cupric ions (Cu^2+) of Cu(OH) (Fehling solution) are reduced to:

27 / 39

It is an alkaline solution of tartarate complex of Cu (II):

28 / 39

Formalin is an aqueous solution of:

29 / 39

In aldehydes, one of the two available valencies of the carbonyl group is always attached to:

30 / 39

Which one is not the general formula of aldehydes?

31 / 39

The compound used in the processing of anti-polio vaccine is: 

32 / 39

Methyl ketones are characterized by:

33 / 39

Which of the following reagent will react with both aldehydes and ketones:

34 / 39

Aldehydes and Ketones react with dinitrophenyl 2, 4 hydrazine hydrazine solution to give precipitate of the colour: 

35 / 39

Addition of alcohol in carbonyl compounds gives acetal, the geometry of acetal is: 

36 / 39

Which compound will not give iodoform test on treatment with I2 / NaOH?

37 / 39

Aldol product on heating undergoes:

38 / 39

Acetone reacts with HCN to form cyanohydrin. It is an example of:

39 / 39

Formation of acetaldehyde from ethanol is known as:

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