H₂C = O behaves as:

1. Nucleophile

2. Electrophile

3. Both (1) and (2)

4. None of the above 

Electrophiles are:

1. electron loving species            

2. electron hating species

3. nucleus loving reagents            

4. nucleus hating reagents

Nucleophiles are:

1. electron loving

2. electron hating

3. nucleus loving

4. nucleus hating

In hyperconjugation, the atom involved is:

1. βΗ atom

2. α-H atom

3. γ-H atom

4. All of these

The stability of 2,3-dimethyl but-2-ene is more than 2-butene. This can be explained in terms of:

1. resonance

2. hyperconjugation

3. electromeric effect

4. inductive effect

Who pointed out the concept of hyperconjugation?

(1) Nathan and Baker

(2) Mulliken

(3) Kekule

(4) Kolbe

Which of the following is the most unlikely resonance structure for the p-nitrophenoxide ion?

1.		2.
3.		4.

Which of the following is an electrophilic reagent?

1. RO^-

2. BF₃

3. NH₃

4. ROH

The +I (inductive effect) is shown by:

1. -CH₃

2. -OH

3. -F

4. -C₆H₅

The-I effect is shown by:

1. -COOH

2. -CH₃

3. -CH₃CH₂

4. -CHR₂