Phenols and Ethers Test

Result

Phenols and Ethers Test - 9

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Weekly Quiz Competition

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.
Identify the final major product of the reaction sequence.

A

B

C

D

Solution
Question 2
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Which is the best reaction for preparation of t-butyl ethyl ether?

A

B

C

D

Solution
Question 3
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The major organic product formed in the following reaction is

A

B

C

D

Solution
Question 4
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Consider the following chain of reactions :
The major product formed in the final step is

A

B

C

D

Solution
Question 5
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The best set of reagents for the following transformation is

A
CH₃ OH/H₂ SO₄

B
(I) (CH₃ COO)₂ Hg-H₂ O, (II) NaBH₄ , (III) CH₃ OH/H₂ SO₄

C
(CH₃ COO)₂ Hg-CH₃ OH followed by NaBH₄

D
(I) H₂ SO₄ /heat (II) Na (III) CH₃ I

Solution

Aloxy mercuration - demercuration brings about Markownikoff ’s addition of alcohols at without any rearrangement.
Question 6
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The major organic product formed in the following reaction is

A

B

C

D

Solution

Phenolic —OH does not undergo further substituton.
Question 7
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Inorganic salts are usually insoluble in organic solvents e.g, KMnO₄ is insoluble in benzene. However presence of one of the following compound in benzene makes KMnO₄ soluble and gives a purple coloured solution. Which is that compound?

A
CH₃ CH₂ OCH₂ CH₃

B

C
CH₃ CH₂ OH

D
H₂ O

Solution

It is a crown ether which traps K⁺ ion and makes KmnO₄ soluble.
Question 8
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Consider the following roadmap reaction :

The most probable structure of X is

A

B

C

D

Solution
Question 9
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One or More than One Options Correct Type

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

Consider the following reaction,

Q.

The expected substitution product(s) is/are

A

B

C

D
Option B,C are Correct

Solution

Reaction proceeds by S_N 1 mechanism.

Above carbocations give the desired products.
Question 10
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Which of the following ethers can be obtained in good yield by intermolecular dehydration of alcohols ?

A

B

C

D
All are correct

Solution

For preparation of ether by intermoleculer dehydration of alcohol, the alcohols must by primary aliphatic because S_N 2 reaction has to take place.
Question 11
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If diethyl ether is left in contact of air for long time, the product formed is/are

A
CH₃ COOH

B

C
C₂ H₅ OOC₂ H₅

D
Option B,C are Correct

Solution

Ether is oxidised to peroxide at α-position as