State the importance of petroleum as an energy resource. Mention any four oil fields of India.
Petroleum is the next major energy source in India after coal. Petroleum provides fuel for heat and lighting, lubricants for machinery and raw materials for number of manufacturing industries – synthetic textiles, fertiliser ad numerous chemical industries.
(i) Mumbai High.
(ii) Ankeleshwar, Gujarat.
(iii) Digboi, Assam.
(iv) Bassien, Arabina Sea.