UPSC Previous Year Question | Prelims GS | 2020

Steel slag can be the material for which of the following? 1. Construction of base road 2. Improvement of agricultural soil 3. Production of cement

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3

Answer

Correct Answer

1, 2 and 3

Explanation

Steel slag is used as an aggregate in road base construction, as a soil conditioner that supplies calcium, magnesium and silicon and corrects acidity, and as a raw material or blend for cement.

Topics: environmental pollution, environment & ecology, steel slag - industrial by-product utilisation, waste management