MCQOPTIONS
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MCQOPTIONS
| 1. |
Biogas is composed of |
| A. | ethane, carbon dioxide, nitrogen and hydrogen |
| B. | arbon dioxide, nitrogen and hydrogen |
| C. | thane, carbon dioxide, nitrogen and hydrogen |
| D. | ethane, carbon dioxide, nitrogen and sulphur |
| Answer» B. arbon dioxide, nitrogen and hydrogen | |