With reference to Steel slag, consider the following statements:1.Thickness of steel slag roads is more as compared to conventional roads made of asphalt.2.It can also be used in agriculture sector as a fertilizer and a soil nutrient.Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: B

Notes:

Statement 1 is incorrect:Steel slag roads have 30% lesser thickness as compared to conventional roads made of asphalt.
Statement 2 is correct:Steel slag contains calcium, silicon, manganese, phosphate and iron. The use of steel slag as fertilisers and soil nutrients is gaining importance across the globe as it represents an eco-friendly application wherein advantages of chemical properties of steel-making slag can be utilised to promote the growth of plants and increase the yield of agricultural products, particularly in the areas where the soil is acidic.

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