Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test General Knowledge Indian Geography Indian Economic and Human Geography
Out of the following fuels, which fuel can be said to be most environment-friendly?
1
Diesel
2
HCNG
3
Petrol
4
More than one of the above
5
None of the above