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UPSC 2020: Steel slag can be the material for which of the following ?
(a)1 and 2 only
(b)2 and 3 only
(c)1 and 3 only
(d)1, 2 and 3
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Not attemptedCorrect Answer: (d) 1, 2 and 3
Steel-making slag is reused as (1) aggregate for road-base layers, (2) a liming/silicate fertiliser that improves acidic agricultural soils, and (3) a supplementary cementitious material or aggregate in cement/concrete manufacture; hence all three listed uses are valid. ([edukemy.com](https://edukemy.com/blog/upsc-prelims-2020-question-76/?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2020 Environment & Ecology question?▼
The correct answer is option (d): 1, 2 and 3. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Renewable Energy & Green Technologies question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2020, GS Paper 1, as Question 76. It falls under Environment & Ecology > Renewable Energy & Green Technologies.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Renewable Energy & Green Technologies?▼
UPSC has asked 18 questions from Renewable Energy & Green Technologies (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.