In rural road construction, the use of which of the followin

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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:

??????? ???? ??????? ???, ?????????? ??? ?? ????? ????? ?????????? ??????? ????????? ???? ?? ?????? ????????? ?? ?? ???? ?? ??? ???? ???? ???? ???

1. ???? ?????

2. ????? ????? ???? ?????

3.Geotextiles

4.Hot ?????? ???? ????????????

5.????? ??????

???? ??? ?? ??? ?? ????? ???? ??? ????? ?????:

[UPSC CSE PRE 2020,Ecology and Environment 2017-2020]

A 1, 2 and 3 only

केवल 1, 2 और 3

B 2, 3 and 4 only

केवल 2, 3 और 4

C 4 and 5 only

केवल 4 और 5

D 1 and 5 only

केवल 1 और 5

Answer: (a) Explanation: •The usage of Copper slag reduces the usage ...

?????: (?) ??????????: • ???? ????? ?? ????? ???????? ?????????? ?? ?...

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