Which one of the following centres is NOT known for iron and steel industry ?

Renukoot is not known for the iron and steel industry; instead, it is a major hub for the aluminium industry, housing the Hindalco plant. In contrast, the other three options are prominent steel centers. Bhadravati is home to the Visveswaraya Iron and Steel Limited, established in 1923, which produces alloy and special steel using resources from the Baba Budan Hills [1]. Salem is explicitly listed as a main steel plant location in India . Vishakhapatnam (Vizag) hosts the Rashtriya Ispat Nigam Limited (RINL) plant, which is notable for being India's oldest coastal steel plant, commissioned in 1992 and sourcing iron ore from Bailadila [3]. While Bhadravati, Salem, and Vishakhapatnam are integral parts of India's steel infrastructure, Renukoot's industrial identity is defined by non-ferrous metallurgy.

Sources

1. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 11: Industries > 3. The Bhadravati Iron and Steel Plant (VISL) > p. 33
2. [3] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 10: Locational Factors of Economic Activities > major Steel Plants of the World > p. 37