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

Arrange H, CH₃, C₂H₅, and C₃H₇ in order of increasing positive inductive effect:

1. H < CH₃ < C₂H₅ < C₃H₇

2. H> CH₃ <C₂H₅ > C₃H₇

3. H < C₂H₅ < CH₃ <C₃H₇

4. None of the above

To which ring size cycloalkanes, Baeyer’s strain theory is not valid?

(1) 3 carbon

(2) 4 carbon

(3) 5 carbon

(4) ≥6 carbon

The shifting of electrons of  multiple bonds under the influence of a reagent is called:

1. I-effect

2. E-effect

3. M-effect

4. None of the above.

Which of the following statements accurately describes the stability of allyl and propyl carbocations?

1. Allyl carbocation (CH₂=CH-CH₂⁺) is more stable than propyl carbocation.

2. Propyl carbocation is more stable than allyl carbocation.

3. Both are equally stable.

4. None of the above.