20:20

Aromatic compounds

47:06

Chemical Properties of Carbon Compounds

29:40

Structure of benzene

35:45

Alkynes

33:40

विलयन ।विलयन के सांदता के पद। मोलरता।part 3।

24:55

Properties of benzene

51:10

type of redox reactions

35:25

Friedel craft alkylation reaction