A
1 and 2 only
B
2 and 3 only
C
1 and 3 only
D
1, 2 and 3
Correct answer: (d) 1, 2 and 3
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.
-
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 -
2018 · Q97 · General Studies · 2 marks
Consider the following items: 1. Cereals grains hulled 2. Chicken eggs cooked 3. Fish processed and canned 4. Newspapers containing advertising material Which of the above items is/are exempted under GST (Goods and Services Tax)?