UPSC PRELIMS · GEOGRAPHY · ENVIRONMENT — GREEN INFRASTRUCTURE
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:
Take a breath. Choose one. Press A–D on your keyboard if you like.
EXPLANATION
Copper slag, cold-mix technology and geotextiles can reduce resource use or emissions relative to conventional materials/processes.
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