Related InterviewSolutions

• The correct order of reactivity towards the electrophilic substitiution of the compounds aniline(I),benzene(II) and nitro-benzene(III) isA. IgtIIgtIIIB. IIIgtIIgtIC. IIgtIIIgtID. IltIIgtIII
• Cyclo butadiene isA. AromaticB. AliphaticC. anti aromaticD. heterocyclic
• What is the electrophile in the nitration of benzeneA. `overset(+)(N)O_(2)`B. `overset(+)(N)O`C. `NO`D. `overset(**)(N)O_(2)`
• Identify the position where electrophilic aromatic substitution EAS) is most favourableA. AB. BC. CD. D
• A general mechanism for aromatic electrophilic substitution reaction is. (`K_(1)` and `K_(2)` are rate constant for the forward reaction) also C-D bond in harder to break than a C-H bond, and consequently reaction in which C-D bond broken proceed more slowly than the reaction in which C-H bond are broken. However experimetns reveal that nitration of `C_(6)H_(6) and C_(6)D_(6)` proceeds at equal rates while the same is not true for sulphonation of `C_(6)H_(6)` and `C_(6)D_(6)`. Q. In the nitration reactionA. `k_(1)=k_(2)`B. `k_(1) gt k_(2)`C. `k_(1) lt k_(2)`D. `k_(1) underset(~)(-) k_(2)`
• A general mechanism for aromatic electrophilic substitution reaction is. (`K_(1)` and `K_(2)` are rate constant for the forward reaction) also C-D bond in harder to break than a C-H bond, and consequently reaction in which C-D bond broken proceed more slowly than the reaction in which C-H bond are broken. However experimetns reveal that nitration of `C_(6)H_(6) and C_(6)D_(6)` proceeds at equal rates while the same is not true for sulphonation of `C_(6)H_(6)` and `C_(6)D_(6)`. Q. When one of the carbons of benzene is labelled `(C^(14))`, in which case we expect greater yield of the product obtained at labelled carbon.A. NitrationB. SulphonationC. Both have equal chanceD. It depends on temperature.
• A general mechanism for aromatic electrophilic substitution reaction is. (`K_(1)` and `K_(2)` are rate constant for the forward reaction) also C-D bond in harder to break than a C-H bond, and consequently reaction in which C-D bond broken proceed more slowly than the reaction in which C-H bond are broken. However experimetns reveal that nitration of `C_(6)H_(6) and C_(6)D_(6)` proceeds at equal rates while the same is not true for sulphonation of `C_(6)H_(6)` and `C_(6)D_(6)`. Q. What can be inferred regarding mechanism of sulphonation of `C_(6)H_(6) and C_(6)D_(6)`A. Activation energy for the first step in `C_(6)H_(6)` is greater than that of `C_(6)D_(6)`B. Activation energy for the first step in `C_(6)H_(6)` is smaller than that of `C_(6)D_(6)`C. When benzene is sulphonated, Ea (i) and Ea (ii) are closer than they are when `C_(6)D_(6)` is sulphonated.D. When `C_(6)D_(6)` is sulphonated Ea (i) and Ea (ii) comes very close and `K_(2)` approaches `K_(1)`.
• Lindane is also represented asA. 6,6,6B. BHCC. GammaxeneD. all of these
• Which of the following compound is expected to undergo fastest electrophilic aromatic substitution than unsubstituted benzeneA. B. C. D.
• For an electrophilic substitution reaction , the presence of a halogen atom in the benzene ring …..A. deactivates the ring by inductive effectB. deactivates the ring by resonanceC. increases the charge density at ortho and para position relative to meta position by resonanceD. directs the incoming electrophile to meta position by increasing the charge density realtive to ortho and para position.