Description : Classify industries on the basis of their main role. -SST 10th
Last Answer : 1.Basic or key industries: These industries supply their product or raw materials to manufacture other goods; e.g., iron and steel, copper smelting and aluminium smelting. 2.Consumer industries: These are ... for direct use by consumers; e.g., sugar, toothpaste, paper, sewing machines, fans, etc.