15. Sterlite Industries

Year End: March 2012

Profit Before Tax: 9,872 crore

Tax: 2,248 crore

Effective Tax Rate (In Percent): 22.8

The company is Mumbai based. Its main operating subsidiaries are Hindustan Zinc Limited, Copper Mines of Tasmania Pty Limited Australia and Bharat Aluminum Company. The company is entering into the commercial set up of power generation business, by introducing a large scale coal based independent thermal power plant in Jharsuguda, Orissa and a wind energy project at Karnataka, Maharashtra and Gujarat.

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16. Hindustan Unilever

Year End: March 2012

Profit Before Tax: 3,622 crore

Tax: 832 crore

Effective Tax Rate (In Percent): 23.0

Hindustan Unilever (HUL) headquartered in Mumbai, is the nation's largest consumer goods manufacturing company. The company is owned by the British-Dutch company Unilever which holds 52% majority stake in HUL. Its products include foods, beverages, personal care and cleaning agents. The company products are available in over 6.4 million outlets in India.

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17. NTPC

Year End: March 2012

Profit Before Tax: 13,137 crore

Tax: 3,106 crore

Effective Tax Rate (In Percent): 23.6

NTPC Limited (formerly National Thermal Power Corporation) founded on 7 November 1975, is the nation's largest state-owned electric utilities company based in New Delhi. Its core business is engineering, construction and operation of power generating plants and providing guidance to power utilities in India and abroad.