Test: Reaction Mechanism- 1


30 Questions MCQ Test Organic Chemistry | Test: Reaction Mechanism- 1


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QUESTION: 1

Which of the following statements regarding the E2 mechanism is wrong?

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QUESTION: 2

The major product P formed in the given:

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QUESTION: 3

 above reaction is

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It is nucleophilic substitution reaction which is in first order.

QUESTION: 4

The major product formed in the following reaction is:

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QUESTION: 5

Predict the major product P in the following reaction:

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correct ans is 'A'

QUESTION: 6

The major product formed in the following reaction is:

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QUESTION: 7

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

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QUESTION: 8

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

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QUESTION: 9

In the reaction, the major product X is:

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QUESTION: 10

In the reaction, the major product X is:

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QUESTION: 11

The major product formed in the following reaction is :

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QUESTION: 12

The major product formed in the following reaction is:

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QUESTION: 13

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

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QUESTION: 14

The major product formed in the following reaction is:

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QUESTION: 15

The body of car is repaired with help of a filler which is hardened by addition of

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QUESTION: 16

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

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QUESTION: 17

Solvolysis of the optically active compound X gives, mainly:

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QUESTION: 18

The major product obtained in the following reaction, is 

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QUESTION: 19

The major product formed in the following reaction is:

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QUESTION: 20

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

(I) Tropylium 

(III) (C6H5)2C+
(IV) CH3+

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QUESTION: 21

What is the nucleophilicity order for SN2 reaction:

(I) C6H5S
(II) C2H5O
(III) NO3
(IV) CN
(V) I

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QUESTION: 22

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

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QUESTION: 23

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

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QUESTION: 24

In an SN2 reaction there is:

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QUESTION: 25

Reactive intermediate formed in the following reaction is:

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The reaction of bromine with sodium hydroxide forms sodium hypobromite in situ, which transforms the primary amide into an intermediate isocyanate. The formation of an intermediate nitrene is not possible because it also implies the formation of a hydroxamic acid as a byproduct, which has never been observed. The intermediate isocyanate is hydrolyzed to a primary amine, giving off carbon dioxide.

QUESTION: 26

Cannizzaro reaction is not given by:

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QUESTION: 27

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

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QUESTION: 28

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

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QUESTION: 29

Consider the following carbocations is most stable:

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QUESTION: 30

The major product formed in the reaction given below is:

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