Hello My Friend,
The NSE has various indces based on varied criteria such os one of fifty companies NIFTY, Midcap, Broadbased Nifty 500, etc.
Please buy a coy of Economic times and therein u will find various sector wise coys like Mindex, Bankes, Lifex, Psu insex and so on.
I suggest buy one copy of Dalal Street Journal or Capital Market and in the middle pages u will find industry wise datails of companies along with vital datas.
there are various web sites which gives details of industries to traders according to the items they manufacturing.
Kojo and u will get it! That is it!