UPSC CSE Prelims 2020 Q78 — Environment & Ecology PYQ

2020Q78·Environment & Ecology·Renewable Energy & Green Technologies

In rural road construction, the use of which of the following is preferred for ensuring environmental sustainability or to reduce carbon footprint?

1. Copper slag

2. Cold mix asphalt technology

3. Geotextiles

4. Hot mix asphalt technology

5. Portland cement

Select the correct answer using the code given below:

UPSC CSE Prelims 2020 Q78 — Environment & Ecology PYQ with Answer

UPSC CSE Prelims 2020 Q78 — Environment & Ecology PYQ with Answer