Phenols and Ethers Test

Result

Phenols and Ethers Test - 7

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0.25

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.
The most appropriate reagents that can bring about the following transformation is

A
KMnO₄ /NaOH(aq)

B
H₂ SO₄ (aq)/heat

C
Br₂ -H₂ O then NaOH

D
CF₃ CO₃ H then H₂ SO₄ (H₂ O)

Solution

Epoxide upon hydrolysis gives anti, vicinal diois.
Question 2
1 / -0.25

Which major organic product is formed in the following reaction ?

A

B

C

D

Solution

Epoxide undergo nucleophilic attack of NH₃ at less substituted α-carbon giving anti hydroxy amine.
Question 3
1 / -0.25

The major organic product formed in the reaction given below is

A

B

C

D

Solution
Question 4
1 / -0.25

In the following hydrolysis reactio, the major final product is

A

B

C

D

Solution

On protonated epoxide, nucleophilic attack occur at α-carbon Where more stable carbocation could be formed.
Question 5
1 / -0.25

In the reaction given below,
The correct deduction concerning X and Y is

A
Both X and Y are meso isomers

B
X is meso isomer while Y is racemic mixture

C
X is racemic mixture while Y is meso

D
Both X and Y are racemic mixture

Solution
Question 6
1 / -0.25

An alkene on treatment with meta chloro perbenzoic acid undergoes epoxidation reaction to give oxirane. What is the correct order of increasing reactivity of the following in the above mentioned epoxidation reaction?

A
I < II < III < IV

B
IV <III < II < I

C
IV < I < II < III

D
III < II < IV < I

Solution

Epoxidation is an example of electrophilic ad dition at olefin ic bonds. Therefore, greater the electron density at olefinic bond, greater its reactivity. Electron donating groups increases reactivity while electron withdrawing group s like —CF₃ decreases reactivity.
Question 7
1 / -0.25

Which of the following compound gives more than one oxirane upon epoxidation with Ag₂ O/heat?

A

B

C

D

Solution

It gives racemic mixture of oxiranes.
Question 8
1 / -0.25

The reaction given beiow that gives oxirane as the major organic product is

A

B

C

D

Solution
Question 9
1 / -0.25

One or More than One Options Correct Type

Direction : This section contains multiple type questions. Each question has 4 choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

Consider the following reaction sequence,

Q.

The intermediate products (I - IV) in the above reaction is/are

A

B

C

D
Option B,C are Correct

Solution
Question 10
1 / -0.25

The reagent that can bring about the following transformation in good yield is/are

A
O₃ /Zn - H₂ O

B
CF₃ CO₃ H/H₂ O(boil)

C
Cl₂ - H₂ O then CaO then H₂ SO₄ (dil.)

D
Option B,C are Correct

Solution

(c) Epoxide on hydrolysis gives an ti diol.
(d) Halohydrin is formed in first step which gives epoxide with CaO. Epoxide is then hydrolysed in H₂ SO₄ giving anti diol.
Question 11
1 / -0.25

In the reaction below,

The correct statement concerning the above reaction is/are

A
Y is a racemic mixture while Z is achiral

B
A diastereomer of Y gives racemic Z

C
X show diastereomerism but not enantiomerism

D
All are correct

Solution