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Which of the following statement is not true about composition of biogas? | |
A. | It is composed almost exclusively of methane and carbon dioxide [Wrong Answer] |
B. | It also contains with traces of H2S, N2, H2and CO [Wrong Answer] |
C. | It also contains with traces of O2 and Cl2 [Correct Answer] |
D. | Both (a) and (b) [Wrong Answer] |