Explanation
- A
1 and 2 only
1 and 2 only. Cement use is also true.
- B
2 and 3 only
2 and 3 only. Road base is also true.
- C
1 and 3 only
1 and 3 only. Soil amendment is also true.
- D
1, 2 and 3
All three. Steel slag in road base, as a soil conditioner, and in cement/clinker.
Summary. Official key is (d) 1, 2 and 3. Steel slag is reused as road aggregate, as a soil improver (lime-like), and in cement manufacture.
Same topic · past papers
UPSC has asked this before
These previous-year questions sit on the same topic. Open one to practise the earlier ask.
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2020 · Q89 · General Studies · 2 marks
With reference to the current trends in the cultivation of sugarcane in India, consider the following statements: 1. A substantial saving in seed material is made when -
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