Which one of the following statements is not correct?

Option 1 is not correct. Rourkela Steel Plant, though a major public‑sector integrated plant located in Sundargarh district of Odisha, was not established with Soviet Union collaboration — that distinction historically belongs to other plants; Rourkela had different foreign involvement and therefore the statement is incorrect. The other three statements are correct: Salem Steel Plant is a premier producer of stainless steel under the public steel sector framework (SAIL supervises main public sector steel plants) [2]; Maharashtra Elektrosmelt Ltd has been associated as a subsidiary within the public steel sector (SAIL group) (internal sources); and Visakhapatnam Steel Plant is a unit established under Rashtriya Ispat Nigam Ltd (RINL) [3]. Rourkela’s location is noted in Sundargarh, Odisha [1].

Sources

1. [2] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 11: Industries > Iron and Steel Plants in India > p. 29
2. [3] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 11: Industries > 10. Vishakhapatnam Steel Plant > p. 35
3. [1] Geography of India ,Majid Husain, (McGrawHill 9th ed.) > Chapter 11: Industries > 5. Raurkela Iron and Steel Plant (Hindustan Steel Limited) > p. 33