1.

Question : A substaintialfall in CO_2and SO_2 level hasbeenfoundin Delhibetween1997and 2005due to

Answer»

use of purifiedunleaded petrol
Use of purifiedunleaded diesel
use of compressedNatural GAS (CNG ) inpublictransports
use of Liquifiedpetroleam Gas (LPG ) in publictransports

ANSWER :C


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