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:
A1, 2 and 3 only
B2, 3 and 4 only
C4 and 5 only
D1 and 5 only
Answer & Solution
Correct answer: A. 1, 2 and 3 only
UPSC CSE Prelims 2020 (GS-I, Set A), Q.78. Official answer key: A.
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