Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Periodic Table
Bio gas consists of
1
Carbon monoxide, Methane and Hydrogen
2
Carbon dioxide, Methane and Hydrogen
3
Carbon monoxide, Ethane and Hydrogen
4
More than one of the above
5
None of the above