EAS

Question 1

In electrophilic aromatic substitution

Answer 1

First electrophilic aatach with Lewis acid
Electrophile attach with benzene
Benzene remove h+ where electrophile attach itself

Question 2

Leaving group of how many types

Answer 2

3
Negative = cl- ,Br-, l-
Natural gas = co2, so2, n2
Neutral solvent = h2o, roh
Positive = si+me3,h+

Question 3

Rate determining step

Answer 3

When electrophilic added to benzene ring and carbocation is formed

Question 4

Rate of substitution faster in benzene ring have hydrogen,deuterium, tritium

Answer 4

Equal
In case of sulphonation and iodination these are not equal

Question 5

N2O5 BREAKS IN TO

Answer 5

NO3- , NO2+

Question 6

HNO3 + H2SO4 GIVE NO2 +
HNO3 ACT AS A

Answer 6

Base

Question 7

BF4NO2 and conc. HNO3 GIVE

Answer 7

NO2+

Question 8

Cl2 kya paida karta hai

Answer 8

Cl + electrophile

Question 9

Br–f/ AlCl3=
Cl–I/ AlCl3

Answer 9

Br+
I+

Question 10

RCN+H+ /H2O

Answer 10

RC=O

Question 11

CH2O+HCI

Answer 11

Ch2+cl

Question 12

CO + H+

Answer 12

Aldehyde

Question 13

CLSO2H+ H+

Answer 13

ClSO2

Question 14

In intramolecular EAS 3,4 membered ring not formed

Question 15

Ch3 hee bs ortho major deta hai 2,3 jo hai para major dete hai

Question 16

In intramolecular EAS PARA product not preferred

Answer 16

Because bridge head carbon

Question 17

In case of alcohol or epoxide only 6 membered ring preferre

Answer 17

Otherwise elimination occur

Question 18

Nitration of phenol major product

Answer 18

Ortho

Question 19

In phenol ring why poly nitration not occur but poy bromination take place

Answer 19

Nitration ki wajah se benzene ring electron deficient ho jayega

Question 20

P2O5 work

Answer 20

Removal of water

Question 21

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