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?
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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