AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Iron and steel is classified as a heavy industry because all its raw materials (iron ore, coking coal, limestone) as well as finished goods are heavy and bulky, entailing heavy transportation costs.
Source: Iron and Steel Industry, Chapter 6
The answer must use the exact reason given in the textbook: heavy and bulky raw materials + finished goods = heavy transportation costs. Examiners expect this specific phrasing. Avoid vague answers like "it uses a lot of iron" — be precise about both raw materials and finished goods being heavy/bulky.