Aldehydes and Ketones Test

Result

Aldehydes and Ketones Test - 9

Score
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TIME Taken - -

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Weekly Quiz Competition

Question 1
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Only One Option Correct Type
Direction (Q. Nos. 1-7) This section contains 7 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.
Q.
Which gives more than one amides on treatment with NH2OH followed by PCI₅ ?

A

B
H₂ CO

C

D

Solution

Unsymmetrical carbonyls give more than one oximes with hydroxylamine, hence more than one amides in the subsequent Beckmann rearrangement.
Question 2
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Which oximes on treatment with concentrated H₂ SO₄ undergo rearrangement to give single amide?

A

B

C

D

Solution

Symmetrical oximes give single amide in Beckmann rearrangement.
Question 3
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What would be the major organic product in the following oxidation reaction?

A

B

C

D

Solution

In BV oxidation, tertiary alkyl group has greater migrating aptitude than primary and secondary alkyl group.
Question 4
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What is the final major product in the following reaction?

A

B

C

D

Solution
Question 5
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What is the major organic product in the following reaction?

A

B

C

D

Solution
Question 6
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What is X in the following reaction?

A

B

C

D

Solution
Question 7
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What is X in the following reaction?

A
CH₃ — CH = CH₂

B
CH₃ — C ≡ CH

C

D

Solution
Question 8
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One or More than One Options Correct Type

Direction (Q. Nos. 8-11) 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.

In the reaction given below,

Reagent X could be

A
PCI₅

B
Conc.H₂ SO₄

C
SOCI₂

D
All are correct

Solution

Beckmann rearrangement of oximes can be carried out with either PCI₅ or Conc. H₂ SO₄ or SOCI₂ .
Question 9
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Which reaction given below gives 2,2-dimethyl oxirane?

A

B

C

D
All are correct

Solution

(a) Addition of carbene at gives oxirane.
(c) Epoxidation of alkene gives oxirane.

(d)
Question 10
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In the reaction given below,

Q.

expected product(s) is/are

A

B

C

D
Option A,C are Correct

Solution
Question 11
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The correct statainent(s) regarding the following reaction is/are

A
Product is an acetic acid ester

B
Ketone is oxidised

C
Reaction involves migration of phenyl moiety onto oxygen atom

D
All are correct

Solution
Question 12
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Comprehension Type

Direction (Q. Nos. 12-14) 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

Consider the following sequence of an organic synthesis

Q.

If the starting compound has all its stereoisomers present, how many different oximes would be produced?

A
2

B
3

C
4

D
6

Solution
Question 13
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Consider the following sequence of an organic synthesis

Q.
Which is not a part of neutral products?

A

B

C

D
both (a) and (b)

Solution

(1) and (2) are the only rearrangement products.
Question 14
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Consider the following sequence of an organic synthesis

Q.
What is the possible repeating unit of polymer formed at the end of the reaction ?

A

B

C

D
both (a) and (b)

Solution
Question 15
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One Integer Value Correct Type

Direction (Q. Nos. 15-17) This section contains 3 questions. When worked out will result in an integer from 0 to 9 {both inclusive).

In the reaction

Q.

how many different amides are expected?

A
4

B
3

C
2

D
1

Solution

Both of pair below has one chiral carbon each, exist as a pair of enantiomers each.
Question 16
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In the reaction

Q.

how many different amides are expected?

A
9

B
4

C
5

D
0

Solution
Question 17
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Q.

How many lone pair of electrons are present in Y?

A
9

B
5

C
6

D
1

Solution