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Junior science refresher
Buy and subsribe here Junior science refresher published this article page no 22 tertiary coals occur in assam arunachal pradesh meghalaya and nagaland. it is extracted from darangiri cherrapunji mewlong and langrin meghalaya makum jaipur and nazira in upper assam namchik – namphuk arunachal pradesh and kalakot jammu and kashmir. besides the brown coal or lignite occur in the coastal areas of tamil nadu pondicherry gujarat and jammu and kashmir. crude petroleum consists of hydrocarbons of liquid and gaseous states varying in chemical composition colour and specific gravity. it is an essential source of energy for all internal combustion engines in automobiles railways and aircraft. its numerous by-products are processed in petrochemical industries such as fertiliser synthetic rubber synthetic fibre medicines vaseline lubricants wax soap and cosmetics junior science refresher magazine latest edition.