Criminal P.C. (2 of 1974) , S.374— Narcotic Drugs and Psychotropic Substances Act (61 of 1985) , S.8(c), S.22(c), S.22(b)— Conversion of conviction - Offence u/Ss. 8(c) r/W S.22(c) of NDPS Act - Accused seeking conversion to one u/S. 8(c), r/W S. 22(b) of Act - Lapse on part of Chemical Analyser in obtaining weight of contraband, without polythene cover - No attempt was made to place on record weight of contraband separately and to get clarify same - Conviction converted to S.22(b) of Act. (Para 8 10 11)