What is the major constituent of Biogas?

What is the major constituent of Biogas?Options :ButaneMethaneHydrogen sulphidePropane

The main constituents of biogas are Options :Methane and Carbon dioxideAmmonia and Carbon dioxideHydrogen and MethaneHydrogen sulphide and Carbon monoxide

biogas and scum, which is denser?

What is the pre-storage and feeding system in a biogas plant?

The most critical aspect of biogas production under Material (fuel ) is / are Consistency – seasonality Availability – 365day/y Quality – directly linked to gas production All of the above Only a and c