Q18 of 47 Page 6

Mention 4 raw materials needed for a cement industry.

Lime stone, silica, alumina and gypsum are the raw materials needed for a cement industry

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16 What is 'manufacturing? 17 List four agro based industries. 19 Why are most of the jute mills of India located in West Bengal? 20 Why is the iron and steel industry located in Peninsular India only?