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Test: Reaction Mechanism Level - 4 - Chemistry MCQ


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30 Questions MCQ Test - Test: Reaction Mechanism Level - 4

Test: Reaction Mechanism Level - 4 for Chemistry 2024 is part of Chemistry preparation. The Test: Reaction Mechanism Level - 4 questions and answers have been prepared according to the Chemistry exam syllabus.The Test: Reaction Mechanism Level - 4 MCQs are made for Chemistry 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Reaction Mechanism Level - 4 below.
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Test: Reaction Mechanism Level - 4 - Question 1

 For the reaction below if the concentration of KCN is increased four times, the rate of the reaction will be:

Detailed Solution for Test: Reaction Mechanism Level - 4 - Question 1

This is an SN1 reaction, so, rate of the reaction only depends on substrate, it doesn't depend on nucleophile. Hence change in concentration of the nucleophile won't affect the rate.

C is correct.

Test: Reaction Mechanism Level - 4 - Question 2

The major product formed in the reaction of 1, 3-butadiene with bromine is at high temperature:
 

Detailed Solution for Test: Reaction Mechanism Level - 4 - Question 2

When 1,3-butadiene reacts with Br2 at high temperature (heating) then 1,4- addition to diene takes place, so mainly 1,4-dibromobut-2-ene is formed. But at low-temperature 1,2-addition dominates and 3,4-dibromobut-1-ene is major product

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Test: Reaction Mechanism Level - 4 - Question 3

The products formed in the following reaction is:

Test: Reaction Mechanism Level - 4 - Question 4

 In the reaction sequence 

The product (Y) is:
 

Detailed Solution for Test: Reaction Mechanism Level - 4 - Question 4

Test: Reaction Mechanism Level - 4 - Question 5

 The major product of the reaction

Detailed Solution for Test: Reaction Mechanism Level - 4 - Question 5

According to Markovnikov's rule, when an alkene undergoes hydrohalogenation, the proton is added to the carbon with the highest number of hydrogens, resulting in a stable carbocation intermediate before the nucleophile attack.

Test: Reaction Mechanism Level - 4 - Question 6

 The major product formed in the following reaction.

Test: Reaction Mechanism Level - 4 - Question 7

The major product formed in the following reaction.

Test: Reaction Mechanism Level - 4 - Question 8

The major product obtained in the following reaction

Test: Reaction Mechanism Level - 4 - Question 9

The major product formed in the following reaction is:

Test: Reaction Mechanism Level - 4 - Question 10

Choose the correct order of reactivity for dehydration of the given alcohols using concentrated sulfuric acid.
 

Test: Reaction Mechanism Level - 4 - Question 11

 Electrophilic nitrations of the following compounds follow the trend:

Test: Reaction Mechanism Level - 4 - Question 12

Elimination reactions of compounds 1 and 2 with sodium ethoxide give two alkenes, A and B, but with different selectivities. Which of the following statements best indicates the most probable outcome?

Test: Reaction Mechanism Level - 4 - Question 13

What would be the final major product of the following chemical reaction if it is carried out twice, one at 5 Co and the second time at 45 C0?

Detailed Solution for Test: Reaction Mechanism Level - 4 - Question 13

A is correct, as at higher temperature condensation takes place and removal of water takes place, thus formation of alkene at high temperature only.

Test: Reaction Mechanism Level - 4 - Question 14

What is the major product if HBr (in excess) is added to H2C = CH – CH2 – OH

Test: Reaction Mechanism Level - 4 - Question 15

 The reaction of sodium ethoxide with ethyl iodide to form diethyl ether is termed

Test: Reaction Mechanism Level - 4 - Question 16

What is the final product after the following reaction has gone to completion?

Test: Reaction Mechanism Level - 4 - Question 17

The major product formed in the following reaction is:

Test: Reaction Mechanism Level - 4 - Question 18

 Among the bromides I-III given below, the order of their reactivity in the SN1 reaction is:

Test: Reaction Mechanism Level - 4 - Question 19

 The major product formed in the reaction benzoic acid with isobutylene in the presence of a catalytic amount of sulfuric acid is:
 

Detailed Solution for Test: Reaction Mechanism Level - 4 - Question 19

First of all COOH group is deactivating group, so there will be no ring substitution. Now, in cat. amount of H2SO4, isobutylene gives 3 dgree carbocation. Then lone pair of O of acid will attack it and gives the product (C).

Test: Reaction Mechanism Level - 4 - Question 20

Among the following compounds, the one that undergoes deprotonation most readily in the presence of a base, to form a carbanion is:
 

Test: Reaction Mechanism Level - 4 - Question 21

Detailed Solution for Test: Reaction Mechanism Level - 4 - Question 21

Test: Reaction Mechanism Level - 4 - Question 22

The major product P formed in the given: 

Test: Reaction Mechanism Level - 4 - Question 23

 Iodo-lactonization of β, γ- unsaturated carboxylic acid X with I2 and NaHCO3 gives:

Test: Reaction Mechanism Level - 4 - Question 24

 The major product formed in the following reaction is:

Test: Reaction Mechanism Level - 4 - Question 25

 Predict the major product P in the following reaction:
 

Test: Reaction Mechanism Level - 4 - Question 26

The major product formed in the following reaction is:
 

Test: Reaction Mechanism Level - 4 - Question 27

 The major product obtained treatment of compound X with H2SO4 at 80°C is:


 

Test: Reaction Mechanism Level - 4 - Question 28

 In the following compound, the hydroxy group that is most readily Methylated with C2H2N2 is

Test: Reaction Mechanism Level - 4 - Question 29

 In the reaction, the major product X is:

Detailed Solution for Test: Reaction Mechanism Level - 4 - Question 29

 

 

Test: Reaction Mechanism Level - 4 - Question 30

 In the reaction, the major product X is:
 

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