CBSE 2025 · Region 5 · Set 1 · Q14 · 1 mark
Assertion (A) : Biogas plants are more often built in rural areas. Reason $\displaystyle (R)$ : The excreta or gobar of cattle is rich in Methanobacterium.
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Microbes in Human WelfareMicrobes in Production of BiogasAnalyseassertion_reasoneasy
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CBSE Class 12 Biology past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.