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
Select the correct answer using the code given below :
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Answer: D. Steel slag, a by-product of steel making, can be used in road base and sub-base, as a soil conditioner to improve acidic farm soil, and in making cement (slag cement). So all three.
Watch for: Students think industrial waste cannot be good for soil, so they drop statement 2.
Why the other options are wrong
- A. Wrong because steel slag is also used in cement.
- B. Wrong because steel slag is also used in road construction.
- C. Wrong because steel slag can also improve agricultural soil.
Source to check: Ministry of Steel, Steel Slag utilisation reports (steel.gov.in); CSIR-CRRI steel slag road project
Answer from the official UPSC key. Written and fact-checked by AI against the official key. Spotted a mistake? Report it.