Reaction Intermediate

Question 1

hybridisation of carbocation

Answer 1

sp2

Question 2

hybridisation of carbanion

Answer 2

sp3

Question 3

hybridisation of free radical

Answer 3

sp2

Question 4

magnetic behavior of free radical

Answer 4

paramagnetic

Question 5

magnetic behavior of carbanion

Answer 5

diamagnetic

Question 6

carbene is a

Answer 6

neutral specie

Question 7

hybridisation of singlet carbene

Answer 7

sp2

Question 8

hybridisation of triplet carbene

Answer 8

sp

Question 9

magnetic behavior of singlet carbene

Answer 9

diamagnetic

Question 10

magnetic behavior of triplet carbene

Answer 10

paramagnetic

Question 11

shape of singlet carbene

Answer 11

bent/ v-shape

Question 12

shape of triplet carbene

Answer 12

linear

Question 13

carbene has ………… electrons

Answer 13

6 electrons ( 2bp and 2 non-bonding electrons)

Question 14

singlet carbene ………… hund’s rule

Answer 14

violates

Question 15

triplet carbene………….. hund’s rule

Answer 15

follows

Question 16

stability of carbene in :ch2

Answer 16

singlet

Question 17

spin state

Answer 17

l2sl+1

Question 18

stability of singlet>triplet

Answer 18

:CBr2 / :CCl2 ( due to backbonding)

Question 19

carbene is

Answer 19

an intermediate and NOT A PRODUCT

Question 20

formation of carbene

Answer 20

1. CHCl3/CHF2Cl....etc with BASE like 
   KOH/NaOH/C2H5O-/C6H5O-.....etc
2. Pyrolysis/Photolysis of DIAZOMETHANE (CH2N2)
     CH2=N=N   -------->  N2^ + :CH2
3. KETENES
      CH2=C=O   -------->  CO2^ + :CH2