This video lecture from Aliphatic Hydrocarbons (F.Sc. second year Chemistry) covers the nomenclature of Alkanes continued from last lecture. The scheme followed for multiple subtituents has been discussed in detail. The rules which include that the longest chain with maximum number of substituents has a priority followed by the least number assigned to the substituents e.t.c, have been explained with appropriate examples. Finally some practical problems with wrong names have been corrected to clarify the concept. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.