The correct statement regarding electrophile is :

1. Electrophile is a negatively charged species and can form a bond by accepting a pair of electrons from another electrophile
2. Electrophiles are generally neutral species and can form a bond by accepting a pair of electrons from a nucleophile
3. Electrophiles can be either neutral or positively charged species and can form a bond accepting a pair of electrons from a nucleophile
4. Electrophile is a negatively charged species and can form a bond by accepting a pair of electrons from a nucleophile

Subtopic:  Nucleophile & Electrophile |
 83%
From NCERT
NEET - 2017
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The correct statement about the SN1 reaction is:

1. 100 % racemisation.
2. Inversion more than retention leads to partial racemisation.
3. 100 % retention.
4. 100 % Inversion.

Subtopic:  Nucleophile & Electrophile |
 62%
From NCERT
NEET - 2015
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Which of the following statements is not correct for a nucleophile?
1. Nucleophile is a Lewis acid.
2. Ammonia is a nucleophile.
3. Nucleophiles attack low electron density sites.
4. Nucleophiles are not electron-seeking.

Subtopic:  Nucleophile & Electrophile |
 74%
From NCERT
NEET - 2015
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The species among the following that is not an electrophile is:

1. BH3

2. H3O

3. NO2

4. Cl

Subtopic:  Nucleophile & Electrophile |
 54%
From NCERT
AIPMT - 2010
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The compound that is least reactive towards  nucleophilic substitution reaction is:

1. CH2=CHCl

2. CH3CH2Cl

3. CH2=CHCH2Cl

4. (CH3)3CCl

Subtopic:  Nucleophile & Electrophile |
From NCERT
AIPMT - 2004
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The correct order of reactivity towards the electrophilic substitution of the compounds aniline (I), benzene (II), and nitrobenzene (III) is:

1. III > II > I

2. II > III > I

3. I < II > III

4. I > II > III

Subtopic:  Nucleophile & Electrophile |
 66%
From NCERT
AIPMT - 2003
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In HS-, I-,  RNH2, NH3  the correct order of proton accepting tendency will be:

1. I- > NH3 > RNH2 > HS- 2. NH3 > RNH2 > HS- > I-
3. RNH2 > NH3 > HS- > I- 4. HS- > RNH2 > NH3 > I-
Subtopic:  Nucleophile & Electrophile |
From NCERT
AIPMT - 2001
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Which of the following is most reactive towards electrophilic substitution reaction?

1. 2.
3. 4.
Subtopic:  Nucleophile & Electrophile |
 67%
From NCERT
AIPMT - 1998
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