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. Electrophile 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 |
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NEET - 2017

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The IUPAC name of the compound 
 
1. 5-formylhex-2-en-3-one

2. 5-methyl-4-2-en-5-el

3. 3-keto-2-methylhex-5-enal

4. 3-keto-2-methylhex-4-enal

Subtopic:  Nomenclature |
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The most suitable method of separation of 1:1 mixture of ortho and para-nitrophenols is:

1. Chomatography

2. Crystallization

3. Steam distillation

4. Sublimation

Subtopic:  Purification of Organic Compounds |
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The hybridised state of C in CH5 is 

1. sp

2. sp2

3. sp3

4. sp3d

Subtopic:  Reaction Intermediates ; Preparation & Properties |

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Which alkene has smallest heat of hydrogenation ?

Subtopic:  Electron Displacement Effects |
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In  the decreasing order of bond length will be

1. I>II>III

2. II>III>I

3. III>II>I

4. II>I>III

Subtopic:  Hybridisation & Structure of Carbon Compounds |
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The correct order of abstraction of hydrogen toward homolytic fission is:

1. 2 > 4 > 3 > 5 > 1

2. 4 > 2 > 5 > 3 > 1

3. 4 > 2 > 3 > 5 > 1

4. 4 > 3 > 2 > 5 > 1

Subtopic:  Acidic & Basic Character |
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In the above compound, at which bond proton H+ attacks fastest ?

1. A

2. B

3. C

4. D

Subtopic:  Acidic & Basic Character |

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The most stable free radical is 

Subtopic:  Reaction Intermediates ; Preparation & Properties |
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Consider the following carbocations 

The correct order of stability is 

1. II>III>I>IV

2. III>I>II>IV

3. III>I>IV>II

4. II>IV>I>III

Subtopic:  Reaction Intermediates ; Preparation & Properties |
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