Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test Environmental Studies Energy Resources
Which of the following statements are true about CNG - Compressed natural gas?
1
It is a clean fuel
2
It is a harmful fuel
3
It is a polluting fuel
4
More than one of the above
5
None of the above