2020 Science & Technology - Waste management, Material science

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:

  • 1 and 2 only
  • 2 and 3 only
  • 1 and 3 only
  • 1, 2 and 3

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    2020 UPSC Science & Technology PYQ | UPSC Insights | UPSC Insights