HBr(X) acetoneNaI(Y) (Major); Product (Y) is:

(1) cis-2-butene                                 

(2) trans-2-butene

(3) 1-butene                                   

(4) Iso-butene

 

Subtopic:  Reagents |
 65%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which position will be attacked most rapidly by the nitronium ion (-NO2)+ when the compound undergoes nitration with HNO3/H2SO4 :-

1. A

2. B

3. C

4. D

Subtopic:  Directive Effect of functional grp |
 59%
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NEET 2023 - Target Batch - Aryan Raj Singh
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The electrophilic aromatic substitution proceeds through a:

(1) free radical

(2) sigma complex

(3) benzyne

(4) carbene

Subtopic:  Reaction Intermediates |
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which of the following substitution of benzene is ortho-para in electrophilic substitution and ortho-para in nucleophilic substitution ?

(1) -NO2

(2) -NO

(3) -SO3H

(4) -SO2Me

Subtopic:  Directive Effect of functional grp |
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Which one of the following undergoes nucleophilic aromatic substitution at the fastest rate?
(1) 

(2) 

(3) 

(4) 

Subtopic:  Directive Effect of functional grp |
 71%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Many organic compounds are prepared by using PCl5 because:

(1) OH group of alcohol is easily replaced by chlorine atom

(2) chlorines are added to the unsaturated compounds

(3) it removes water from organic compounds

(4) phosphorus atoms are entered in the alcohol

Subtopic:  SN1 & SN2 Reactions |
 70%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

identify the product in the given reaction:

CH3-CH=CH2+NOClproduct

1. CH3CHCl·CH2·NO

2. CH3CH(NO)·CH2Cl

3. CH3CHCH(Cl)(NO)

4. CH2(NO)·CH2·CH2Cl

Subtopic:  Addition Reaction of C=C |
 58%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Common oxidizing agents used in organic chemistry are;

1. Fenton's reagent

2. osmium tetroxide

3. acidified KMnO4

4. all are correct

Subtopic:  Reagents |
 66%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

 3-methyl-2-pentene on reaction with HOCl gives:

1. 

2. 

3. 

4. 

Subtopic:  Addition Reaction of C=C |
 57%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

In E2 elimination, some compounds follow Hofmann's rule which means:

1. the double bond goes to the most substituted carbon

2. the compound is resistant to elimination

3. no double bond is formed

4. the double bond goes mainly towards the least substituted carbon

Subtopic:  Hofmann's Elimination & Saytzeff Elimination |
 71%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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