4. 4
2) A solution of (-) -1 – chloro -1 – phenyl ethane in toluene racemisses
slowly in the presence of a small amount of Sb𝑪𝒍𝟓
, due to the formation
of :
1) Carbanion 2) Carbene
3) carbocation 4) Free radical
JEE MAIN- 2013
5. 5
1) III > II > I 2) II > III > I
3) I > II > III 4) III > I > II
3) The order of stability of the following carbocation's
JEE MAIN 2013
CH2=CH-CH2;CH3-CH2-CH2;
I II
CH2
III
6. 6
4) With respect to chlorobenzene, which of the following statements is
NOT correct ?
1) Cl is ortho/ para directing
2) Cl exhibits + M effect
3) Cl is ring deactivating 4) Cl is meta directing
EAMCET -2012
7. 7
5) The two bonds N=O and N-O in 𝑯𝟑CN𝑶𝟐 are of same bond length
due to
1) Inductive effect 2) Hyperconjugation
3) Electrometric effect 4) Resonance effect
