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Fundamental Concepts in Organic Reaction Mechanism
1. What is the hybridization of singlet carbene?
a) sp
b) sp3
c) sp3d
d) sp2
Answer: sp2
2. Which of the following is false regarding inductive effect?
a) temporary effect
b) propagates through a carbon chain
c) permanent effect
d) groups having high electron affinity than hydrogen show the negative inductive effect
Answer: temporary effect
3. In a molecule, when displacement of electron pair is away from the group it is ______________ electromeric effect.
a) zero
b) negative
c) positive
d) no
Answer: positive
4. Baker Nathan effect is related to ______________
a) inductive effect
b) electromeric effect
c) hyperconjugation
d) resonance
Answer: hyperconjugation
5. Resonating structures are also known as ______________ forms.
a) canonical
b) inductor
c) electromeric
d) nucleophilic
Answer: canonical
6. What is obtained by thermolysis of azides?
a) free radicals
b) carbocation
c) arene
d) nitrene
Answer: nitrene
7. If the total number of bonds between two atoms is 3 the total number of resonating structures is 2 what is the bond order?
a) 0.5
b) 1.5
c) 2.5
d) 3.5
Answer: 1.5
8. Free radicals are formed during homolytic fission.
a) true
b) false
Answer: true
9. Nucleophilic reagents behave as ______________
a) water
b) lewis base
c) lewis acid
d) salt
Answer: lewis base
10. Carbocations bear a ______________ charge.
a) no
b) negative
c) positive
d) 0
Answer: positive