Salts, sulphur and potash industries are which kind of industry ?
Answer & explanation
Correct answer: option 3
The correct answer is option 3: Chemical based Industries
Chemical based Industries: Such industries use natural chemical minerals, e.g. mineral-oil (petroleum) is used in petro chemical industry. Salts, sulphur and potash industries also use natural minerals. Chemical industries are also based on raw materials obtained from wood and coal. Synthetic fibre, plastic, etc. are other examples of chemical based industries.