Biomass has been used as fuel since ancient t | vedclass

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(D) Biomass,such as wood,has been used as a fuel for centuries,but it is inefficient and produces a lot of smoke. In recent times,it has been modified

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Both $A$ and $B$.

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(D) Biomass,such as wood,has been used as a fuel for centuries,but it is inefficient and produces a lot of smoke. In recent times,it has been modified to function as a more efficient fuel in the following ways: $1$. By converting wood into charcoal,which burns without flames,is comparatively smokeless,and has a higher heat generation efficiency. $2$. By processing biomass (like cow dung and plant waste) in a biogas plant to produce biogas (a mixture of methane,carbon dioxide,hydrogen,and hydrogen sulphide),which is an excellent,clean,and efficient fuel.

Biomass has been used as fuel since ancient times. How has it been modified to function as a more efficient fuel in the recent past?

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