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Test: Method of preparation for Aldehydes & Ketones - JEE MCQ


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15 Questions MCQ Test - Test: Method of preparation for Aldehydes & Ketones

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Test: Method of preparation for Aldehydes & Ketones - Question 1

Rosenmund reduction is used for the preparation of

Detailed Solution for Test: Method of preparation for Aldehydes & Ketones - Question 1
Rosenmund reduction is used for the preparation of aldehydes. In this reaction, the aldehyde group is obtained by the reduction of an acid chloride using hydrogen in the presence of Lindlar's catalyst.
Test: Method of preparation for Aldehydes & Ketones - Question 2

Reduction of acetyl chloride with in presence of and gives:

Detailed Solution for Test: Method of preparation for Aldehydes & Ketones - Question 2

This reaction is known as Rosenmund reaction.
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Test: Method of preparation for Aldehydes & Ketones - Question 3

Catalyst is used in which of the following method of synthesis of aldehyde?

Detailed Solution for Test: Method of preparation for Aldehydes & Ketones - Question 3
Stephen aldehyde synthesis reaction involves the preparation of aldehydes from nitriles using chloride , hydrochloric acid and quenching the resulting iminium salt ([R) with water .
Test: Method of preparation for Aldehydes & Ketones - Question 4

The incorrect statement regarding oxo process for synthesis of an aldehyde is

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Oxo process involves formulation of alkene to form aldehyde only not ketone

Test: Method of preparation for Aldehydes & Ketones - Question 5
Which of the following compounds give a ketone with grignard reagent?
Detailed Solution for Test: Method of preparation for Aldehydes & Ketones - Question 5
Methyl cyanide gives a ketone with grignard reagent. For example, methylcyanide reacts with methyl magnesium bromide to form an adduct magnesium bromide propan-2-ylideneamide which on hydrolysis gives propan-2-one.
Test: Method of preparation for Aldehydes & Ketones - Question 6
Acetyl chloride reacts with ____ to give butan-2-one.
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Test: Method of preparation for Aldehydes & Ketones - Question 7

Dialkyl cadmium reacts with a compound to form a ketone. The compound is:

Detailed Solution for Test: Method of preparation for Aldehydes & Ketones - Question 7

Dialkyl cadmium reacts with an acid chloride to form a ketone.

So, the correct option is (B)

Test: Method of preparation for Aldehydes & Ketones - Question 8
An acetoacetic ester synthesis of a ketone proceeds by alkylation of the enolate of the acetoacetic ester followed by ester hydrolysis and decarboxylation of the -ketoacid. Which of the following methyl ketones is difficult to prepare by this method?
Detailed Solution for Test: Method of preparation for Aldehydes & Ketones - Question 8
The alkylation of the enolate is an reaction, and sterically hindered alkyl groups are difficult to introduce. However, even dialkylation is possible with reactive alkylating agents, as in (d).
Test: Method of preparation for Aldehydes & Ketones - Question 9

The compound is
Detailed Solution for Test: Method of preparation for Aldehydes & Ketones - Question 9
It is Stephen's reaction.
Test: Method of preparation for Aldehydes & Ketones - Question 10

The correct set of reagents to carry out the following conversion

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Test: Method of preparation for Aldehydes & Ketones - Question 11
What is in the following conversion?
Detailed Solution for Test: Method of preparation for Aldehydes & Ketones - Question 11
Pyridinium chloro chromate selectively oxidises a primary alcohol to an aldehyde e.g.
Test: Method of preparation for Aldehydes & Ketones - Question 12

Methyl ethyl ketone is prepared by the oxidation of

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Test: Method of preparation for Aldehydes & Ketones - Question 13

Which alkene on ozonolysis gives and ?

Detailed Solution for Test: Method of preparation for Aldehydes & Ketones - Question 13

Test: Method of preparation for Aldehydes & Ketones - Question 14
Pinacolone is
Detailed Solution for Test: Method of preparation for Aldehydes & Ketones - Question 14
Pinacolone is oxidation product of pinacol.
Test: Method of preparation for Aldehydes & Ketones - Question 15

5 - Methyl - 2 -hexanone can be synthesised from acetoacetic ester and RX. Which of the following RX is used?

Detailed Solution for Test: Method of preparation for Aldehydes & Ketones - Question 15

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