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CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Class 12 MCQ


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21 Questions MCQ Test - CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives)

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CPU 1 - Preparation And General Properties (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 (cl), out of which ONLY ONE is correct.

Q. 

Which is the most suitable reagent for the reaction?

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 1

Tollen's reagent is a mild oxidising agent, oxidises aldehyde to carboxylic acid but does not oxidise alcohols. All other oxidising agents mentioned here oxidises both aldehyde and alcohol groups.

CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 2

What is the cdfrect about the following reaction? 

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 2


Racemic Grignard reagent is formed which gives racemic product.

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CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 3

Predict the major organic product in the following reaction,

Note Star represent carbon labelled C14

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 3

CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 4

Which reaction given below gives hexanedioic acid in good yield?

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 4

CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 5

Which reaction sequence given below gives 5-methyl hexanoic acid?

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 5

CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 6

What is the major organic product in the reaction given below?

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 6


CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 7

A hydrocarbon X has molar mass of 106. X on vigorous oxidation with hot, alkaline KMnO4 followed by acid hydrolysis gives an organic compound whose neutralisation equivalent is 83. Also X on treatment with Br2/FeCI3 in principal produces three monobromination products. Hence, X could be

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 7


CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 8

In the following synthesis, the major organic product formed is

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 8



*Multiple options can be correct
CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 9

One or More than One Options Correct Type

Direction (Q. Nos. 9-14) 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 is/are the correct set of reagents that can bring about the following transformation?

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 9





(b) is giving butanoic acid, all other gives pentanoic acid.

*Multiple options can be correct
CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 10

Which reagent(s) given below can be used to separate a mixture of butanol and butanoic acid from its ethereal solution?

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 10

Both NaOH and NaHCO3 form salt with butanoic acid but not with butanol.

*Multiple options can be correct
CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 11

Which reaction(s) given below gives phthalic acid as the major organic product?

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 11

All these have alkyl or partially oxidised alkyl groups present at ortho positions of benzene, oxidised to phthalic acid with alkaline KMnO4.

*Multiple options can be correct
CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 12

Which reaction sequence given below can convert pentanoic acid into butanoic acid ?

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 12



*Multiple options can be correct
CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 13

If cis-2-butenedioic acid is treated with Br2(l), the product formed is/are

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 13


*Multiple options can be correct
CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 14

Which compound (s) given below gives effervescence with NaHCO3?

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 14

Carboxylic or stronger acids give effervescence with NaHCO3 but weaker acid like phenol does not. However if a strong election withdrawing group is present at para position of phenol (nitro in the present case) it is neutrialised by NaHCO3.

CPU 1 - Preparation And General Properties (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

An organic compound A(C9H10O3) is optically active. A changes orange colour of CrO3- H2SO4 solution to blue-green. A on vigorous oxidation with hot, concentrated , alkaline KMnO4 gives benzoic acid. Also A on treatment with HBr gives B (C9H9O2Br) with same configuration as that of A.

Q. 

What is the structure of A?

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 15

Since, A on vigorous oxidation gives benzoic acid, it indicates that there is only one substituent on phenyl ring. Also A on reaction with HBr giving B (substition of --OH by-Br) without change of configuration indicates the --OH group is not directly present on chiral carbon.

From the above discussion, struction of A satisfying all the criteria is c.

CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 16

An organic compound A(C9H10O3) is optically active. A changes orange colour of CrO3- H2SO4 solution to blue-green. A on vigorous oxidation with hot, concentrated , alkaline KMnO4 gives benzoic acid. Also A on treatment with HBr gives B (C9H9O2Br) with same configuration as that of A.

Q.

Consider the following reaction,

The structure of C is

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 16

Since, A on vigorous oxidation gives benzoic acid, it indicates that there is only one substituent on phenyl ring. Also A on reaction with HBr giving B (substition of --OH by-Br) without change of configuration indicates the --OH group is not directly present on chiral carbon.


CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 17

An organic compound A(C9H10O3) is optically active. A changes orange colour of CrO3- H2SO4 solution to blue-green. A on vigorous oxidation with hot, concentrated , alkaline KMnO4 gives benzoic acid. Also A on treatment with HBr gives B (C9H9O2Br) with same configuration as that of A.

Q. 

Which of the following sequence of reaction gives C as the major product?

Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 17

Since, A on vigorous oxidation gives benzoic acid, it indicates that there is only one substituent on phenyl ring. Also A on reaction with HBr giving B (substition of --OH by-Br) without change of configuration indicates the --OH group is not directly present on chiral carbon.

*Answer can only contain numeric values
CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 18

One Integer Value Correct Type

Direction (Q, Nos. 18-21) This section contains 4 questions. When worked out will result in an integer from 0 fo 9 (both inclusive).

Consider the following reaction,

Q. 

How many different tricarboxylic acids are formed?


Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 18

*Answer can only contain numeric values
CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 19

How many different isomeric methyl cyclohexene, upon treatment with KMnO4/H2SO4/Heat gives dicarboxylic acids?


Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 19

Both the above compounds give dicarboxyiic acids upon oxidation with acidic KMnO4.

*Answer can only contain numeric values
CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 20

A hydrocarbon X on treatment with hot, concentrated and alkaline KMnO4, followed by acid work-up gives an acid whose neutralisation equivalent is 83, with same number of carbon atoms as in starting compound X. Also X has a phenyl ring. How many isomers of X exist, all containing a phenyl group?


Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 20


X has three isomers -ortho, para and meta isomers. 

*Answer can only contain numeric values
CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 21

An unsaturated, acyclic, monobasic carboxylic acid X has neutralisation equivalent of 156. X on treatm ent with KMnO4 /Heat/H2SO4 gives butanoic acid and a dibasic acid Y. How many carbon atoms in Y is /are sp3-hybridised?


Detailed Solution for CPU 1 - Preparation And General Properties (Carboxylic Acids And Acid Derivatives) - Question 21

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