CBSE 2022 · Region 2 · Set 1 · Q4 · 2 marks
Study the given diagrams of Biogas plants – 'A' and 'B' and answer the questions that follow : 
Which one of the two biogas plants can be used for generating gas fuel and electricity and why ? Give suitable reasons in support of your answer.
Which one of the two biogas plants can be used for generating gas fuel and electricity and why ? Give suitable reasons in support of your answer.Marking-scheme solution
Biogas plant A
Methanogens present in the cow dung (grow anaerobically on cellulosic material), produce large amounts of methane along with carbon dioxide and hydrogen.
Microbes in Human WelfareMicrobes in Production of BiogasAnalysevery_short_answermedium
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CBSE Class 12 Biology past-paper question from the 2022board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.