TRUE: Copper is used to make electric wires., Petrolium is popularly known as black gold., Coal is a non-metallic mineral., The unrefined oil found in the oil fields are called crude oil., FALSE: Coal is popularly known as black gold., Cooking gas is converted into ammonia for producing fertilizers., The gas cylinder we use at home for cooking contains CNG., Mercury is used to make ornaments.,

Minerals Of India

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