Test: Reaction Mechanism Level - 5


30 Questions MCQ Test Organic Chemistry | Test: Reaction Mechanism Level - 5


Description
This mock test of Test: Reaction Mechanism Level - 5 for Chemistry helps you for every Chemistry entrance exam. This contains 30 Multiple Choice Questions for Chemistry Test: Reaction Mechanism Level - 5 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Reaction Mechanism Level - 5 quiz give you a good mix of easy questions and tough questions. Chemistry students definitely take this Test: Reaction Mechanism Level - 5 exercise for a better result in the exam. You can find other Test: Reaction Mechanism Level - 5 extra questions, long questions & short questions for Chemistry on EduRev as well by searching above.
QUESTION: 1

The major product formed in the following reaction is:

Solution:
QUESTION: 2

 The major product formed in the following reaction is:

Solution:
QUESTION: 3

In the cyclisation reaction given below, the most probable product formed is:

Solution:
QUESTION: 4

 The major product formed in the reaction given below is

:

Solution:
QUESTION: 5

 The major product formed in the following reaction is:

 

Solution:
QUESTION: 6

 The correct order of the solvolysis for the following chlorides in acetic acid is:

Solution:
QUESTION: 7

The correct order of reactivity of p-halonitrobenzens in the following reaction is

Solution:
QUESTION: 8

 Solvolysis of the optically active compound X gives, mainly:
 

Solution:
QUESTION: 9

 The major product obtained in the following reaction, is

Solution:

Explanation:
DIBAL-H (Di-isobutyl aluminium hydride) is a reducing agent with the preparation of aldehydes. Using DIBAL - H, Lactones are reduced directly to aldehydes.

QUESTION: 10

The major product formed in the following reaction is:

Solution:
QUESTION: 11

 Increasing order of stability of following carbocations (give least stable first)?

Solution:
QUESTION: 12

What is the nucleophilicity order for SN2 reaction:

Solution:
QUESTION: 13

 Select order of effectiveness of Lewis acid catalyst in Friedel-Crafts reaction:

Solution:
QUESTION: 14

 For the reaction between alkyl halide and OH- increase in solvent polarity generally

Solution:
QUESTION: 15

 In an SN2 reaction there is:

Solution:
QUESTION: 16

Reactive intermediate formed in the following reaction is:

Solution:

QUESTION: 17

 Cannizzaro reaction is not given by:

Solution:
QUESTION: 18

 An SN2 reaction at an asymmetric carbon atom of a dextro alkyl halide always gives a:

Solution:
QUESTION: 19

 Reaction of ethyne with HCN in presence of Ba (CN)2 is an example of:

Solution:
QUESTION: 20

Consider the following carbocations is most stable:

Solution:
QUESTION: 21

When 2-chloro-2-methylbutane is refluxed with alcoholic KOH, the main product obtained is:
 

Solution:
QUESTION: 22

 Using given codes, arrange the following compounds in decreasing order of the rate of solvolysis by SN1 mechanism:

Solution:
QUESTION: 23

 1, 3-Dichloropropane one reaction with Zn and NaI gives:

Solution:
QUESTION: 24

Which is the final main product of the following reaction of trans-1,2-dibromocyclohexane?
  

Solution:

Correct answer:

c) 

Elimination reactions by the E2 mechanism are facilitated when the nucleofuge and H on adjacent C atoms can achieve an antiperiplanar relationship. This is only possible in chair trans-1,2-dibromocyclohexane when both Br atoms are axial. The Br at C1 can then be eliminated with a trans axial H on C6 from this (unfavourable) conformation, and the Br at C2 can be eliminated with a trans axial H on C3. Either way, the product is 3-bromocyclohexene which can then undergo a further E2 elimination to give cyclohexa-1,3-diene.

QUESTION: 25

The intermediate in the reaction of m-bromoanisole with sodamide in liquid amnonia has:
 

Solution:
QUESTION: 26

Which one is least stable carbanion:

Solution:
QUESTION: 27

 Which of the alkyl halides undergoes most readily for nucleophilic substitution reaction:

Solution:
QUESTION: 28

 The reaction of ethanolic KOH on 1, 1-dichloropropane gives:

Solution:
QUESTION: 29

 Which reactive intermediate is believed to be part of the reaction shown:

Solution:
QUESTION: 30

 In this transformation,

What is the best structure for A?
 

Solution:

Similar Content

Related tests