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CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Class 12 MCQ


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20 Questions MCQ Test - CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives)

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CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 1

Only One Option Correct Type

Direction (Q. Nos. 1-8) This section contains 8 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY is correct.

Q. 

 What is the major product formed in the reaction ?

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 1

CF3COO- is better leaving group than CH3COO-.

CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 2

What is the major ester in the following reaction ?

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 2

Nucleophilic attack occur at less hindered carboxyl group.

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CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 3

Consider the following reaction,

Q. 

The major product (along with an acid) is

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 3

More stable acid derivative amide is formed by nucleophilic attack of amino group at less hindered carboxyl group.

CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 4

Which reagent can best bring about the following transformation?

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 4

R2CuLi is a poor source of nucleophile, bring about SNAc reaction at more reactive acid chloride but not at stable ester group.

CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 5

Which is the best reagent for the following transformation?

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 5

Given hydrid e is very bulky, bring about reduction at acid chloride and that too upto aldehyde level but not at olefinic triple bond.

CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 6

Which does not form cyclic anhydride on heating?

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 6

β-carbonyl or β-carboxylic acid on heating undergo decarboxylation.

CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 7

Which reaction is the best synthesis of benzoic-ethanoic anhydride?

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 7

CH3COCI is better substrate than C6H5COCI.C6H5COONa is better nucleophile.

CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 8

The major organic product formed in the reaction given below is

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 8

With complex aluminium hydride contain ing bulky alkyl groups, acid anhydrides are reduced to aldehydes.

*Multiple options can be correct
CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 9

One or More than One Options Correct Type

Direction (Q. Nos. 9-15) This section contains 6 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

Q. 

Which of the following reaction(s) fail to occur as written?

 

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 9

(a) Acid amide is more stable acid derivative than ester, cannot be converted into ester by nucleophilic acyl substitution.
(d) Acid anhydride is more stable than acid chloride, hence cannot be converted into later by nucleophilic acyl substitution.

*Multiple options can be correct
CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 10

If phthalic acid is heated with CH3COOH in the presence of P2O5, possible product(s) formed is/are

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 10

Anhydride form ation occur by intermolecular or intramolecular reaction.

*Multiple options can be correct
CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 11

Treatment of benzoyl chloride (C6H5COCI) with which reagent(s) given below can give 1 -phenyl butanone?

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 11





*Multiple options can be correct
CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 12

In the following reaction,

 

Q. 

Possible product(s) from the following is/are

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 12




*Multiple options can be correct
CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 13

In the reaction given below, possible product(s) is/are

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 13




*Multiple options can be correct
CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 14

Consider the reaction sequence in the following synthesis, 

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 14


CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 15

Comprehension Type

Direction (Q. Nos. 15-17) This section contains a paragraph, describing theory, experiments, data, etc. Three questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

Passage

P and Q are isomers of a compound whose empirical formula is CHO. Both P and Q decolourises Br2-H2O solution. On heating, P forms a cyclic anhydride. Compound P as well as Q, upon treatment with cold, dilute alkaline KMnO4 produces one or more than one of the followings S, T and U.

Q. 

Compounds formed from P and Q respectively are

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 15


There fore , Q is trans isomer (fumaric acid) of P.

P gives optically inactive meso diol S and 0 gives inactive (racemic) pair T and U.

CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 16

P and Q are isomers of a compound whose empirical formula is CHO. Both P and Q decolourises Br2-H2O solution. On heating, P forms a cyclic anhydride. Compound P as well as Q, upon treatment with cold, dilute alkaline KMnO4 produces one or more than one of the followings S, T and U.

Q. 

In the reaction given below, X and Y are


Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 16


There fore , Q is trans isomer (fumaric acid) of P.

CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 17

P and Q are isomers of a compound whose empirical formula is CHO. Both P and Q decolourises Br2-H2O solution. On heating, P forms a cyclic anhydride. Compound P as well as Q, upon treatment with cold, dilute alkaline KMnO4 produces one or more than one of the followings S, T and U.

Q. 

Treatment of either P or Q with Br2- H2O forms dibromides. The correct statement concerning product dibromides is

Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 17

There fore , Q is trans isomer (fumaric acid) of P.

Anti-dibromides are formed. Hence, cis isomer would give racemic mixture while trans isomer would give meso.

*Answer can only contain numeric values
CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 18

One integer Value Correct Type

Direction (Q. Nos. 18-20) This section contains 3 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

Q. 

The total number of carboxylic groups in product P is/are


Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 18


*Answer can only contain numeric values
CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 19

Consider the following reaction,

Q. 

How many different stereoisomers of X is/are formed?


Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 19


Syn hydrogenation occur giving —C2H5 and —CH3 on the same side of plane only .

*Answer can only contain numeric values
CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 20

How many different isomers (including stereoisomers) of cyclohexane dicarboxylic acid on heating with P2O5 gives cyclic anhydride ?


Detailed Solution for CPU 4 - Acid Chlorides And Anhydrides (Carboxylic Acids And Acid Derivatives) - Question 20

Only cis isomers can give cyclic anhydride.

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