(A) asbestos, mica, graphite
(B) iron ore, copper, lead
(C) coal, oil, natural gas
(D) salt, potash, sulphur
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Online Test Preparation and Mcqs Website.
(A) asbestos, mica, graphite
(B) iron ore, copper, lead
(C) coal, oil, natural gas
(D) salt, potash, sulphur