Rasayan Works, Didwana, Sambhar Salts, Sambhar, Shri Ram Fertilizers, Kota, Udaipur Phosphate u0026 Fertilizers, Rajasthan Explosives u0026 Chemicals, Ltd. Dholpur, Modi Alkalies u0026 Chemicals Ltd. Alwar, Hindustan Zinc Ltd. Dobari Udaipur, Hindustan Copper Ltd. In which category do all industries like Khetri etc.

• A. small industry
• B. synthetic industry
• C. chemical industry
• D. mineral industry