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Class 12 Exam  >  Class 12 Tests  >  CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Class 12 MCQ

CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Class 12 MCQ


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17 Questions MCQ Test - CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives)

CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) for Class 12 2024 is part of Class 12 preparation. The CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) questions and answers have been prepared according to the Class 12 exam syllabus.The CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) MCQs are made for Class 12 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) below.
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CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 1
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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 ONE is correct.

Q. 

Which amine given below can not be obtained by Hofmann’s degradation of an amide?

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

In Hofmann’s bromamide reaction, a primary amide reacts to give a primary amine.

CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 2
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A secondary amine cannot be prepared directly by

Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 2

Alkyl cyanide gives primary amine on reduction.

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CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 3
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Which is the best preparation of butanamine ?

Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 3

It is Gabriel phthalimide synthesis of primary amine.

CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 4
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In which of the following reaction a primary amine without loss of carbon is produced ?
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CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 5
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Which gives secondary amine as the major product?
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CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 6
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Which reagent can be used for the distinction between a 1° aliphatic amine and C6H5NH2 ?
Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 6

Aniline gives a heavy precipitate of tribromo aniline with Br2- H2O . No such reaction and precipitate formation occur with R —NH2. 

CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 7
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Why N-ethyl-N-methyl propanamine does not show optical activity?
Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 7


Due to rapid interconversion of enantiomeric amines above, a pure enantiomer can not be separated. Also they remain present in equal amount at equilibrium, it is a racemic mixture.

CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 8
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The compound which on treatment with nitrous acid at low temperature produces an oily, liquid is
Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 8

Secondary amine, with cold, nitrous acid, produces yellow , oily liquid nitroso amine.

*Multiple options can be correct
CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 9
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One or More than One Options Correct Type

Direction (Q. Nos. 9-12) This section contains 4 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

Q. 

A primary amine can be prepared by
Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 9


*Multiple options can be correct
CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 10
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Which amines given below, when treated with CH3I forms racemic mixture of salts?
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*Multiple options can be correct
CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 11
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In Gabriel phthalimide synthesis of primary amine, which amine given below is formed with greater difficulty than (CH3)2CHNH2?
Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 11

(b) It is not a prim ary amine.
(c) For synthesis of aniline SN2 reaction will have to occur at C6H5X which is very difficult.

*Multiple options can be correct
CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 12
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Which amine(s) given below forms precipitate with tosyl chloride that is insoluble in KQH solution?
Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 12

Secondary amine, with tosy! chlorid e form s sulphonam id e that do not contain acidic hydrogen on nitrogen, do not dissolve in KOH solution.

CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 13
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Comprehension Type

Direction (Q. Nos. 13-15) 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 has molecular formula C9H13NO and it can be resolved into enantiomers. A does not decolourise Br2-H2O solution. A on hydrolysis with dil. H2SO4 gives B (C9H14O3) which gives effervescence with NaHCO3.
B on treatment with NaBH4 followed by heating with concentrated H2SO4 yielded a sweet smelling liquid C(C9H14O3). Also, A on reduction with LiAIH4 yields C9H19ON which on further heating with concentrated H2SO4 produces the following compound.

Q. 

What is the structure of A?
Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 13

A— can be resolved into enantiomer = has chiral carbon.
A— does not decolourise Br2- H2O solution = has ring structure.

Therefore, A has a nitrile group and B has — COOH.

A satisfying the above ceriteria is 

CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 14
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An organic compound A has molecular formula C9H13NO and it can be resolved into enantiomers. A does not decolourise Br2-H2O solution. A on hydrolysis with dil. H2SO4 gives B (C9H14O3) which gives effervescence with NaHCO3.
B on treatment with NaBH4 followed by heating with concentrated H2SO4 yielded a sweet smelling liquid C(C9H14O3). Also, A on reduction with LiAIH4 yields C9H19ON which on further heating with concentrated H2SO4 produces the following compound.

Q. 

B and C respectively are
Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 14

A— can be resolved into enantiomer = has chiral carbon.
A— does not decolourise Br2- H2O solution = has ring structure.

Therefore, A has a nitrile group and B has — COOH.

CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 15
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An organic compound A has molecular formula C9H13NO and it can be resolved into enantiomers. A does not decolourise Br2-H2O solution. A on hydrolysis with dil. H2SO4 gives B (C9H14O3) which gives effervescence with NaHCO3.
B on treatment with NaBH4 followed by heating with concentrated H2SO4 yielded a sweet smelling liquid C(C9H14O3). Also, A on reduction with LiAIH4 yields C9H19ON which on further heating with concentrated H2SO4 produces the following compound.

Q.

What is formed at the end of following reaction

Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 15

A— can be resolved into enantiomer = has chiral carbon.
A— does not decolourise Br2- H2O solution = has ring structure.

Therefore, A has a nitrile group and B has — COOH.

*Answer can only contain numeric values
CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 16
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One integer Value Correct Type

Direction (Q. Nos. 16 and 17) This section contains 2 questions. When worked out will result in an integer from 0 to 9 (bSm inclusive).

Q. 

How many tertiary amines are possible for C6H15N ?

Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 16




*Answer can only contain numeric values
CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 17
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How many different isomers of amine exist for C5H13N that on treatment with tosyl chloride form precipitate which does not dissolve in KOH solution?

Detailed Solution for CPU 7 - Preparation Of Amines (Carboxylic Acids And Acid Derivatives) - Question 17

Secondary amines form sulphonamides that do not dissolve in KOH solution.

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