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Which of the following two are the major constituents of bio-gas? 1. Methane 2. Butane 3. Carbon dioxide 4. Carbon monoxide Select the correct answer from the code given below:
This question appeared in the UPPSC Prelims 2025 examination (GS-I). It is Question 28 out of 248 questions in this paper.
This question was part of the UPPSC Prelims 2025 (GS-I). The UPPSC Prelims examination tests candidates on general studies, current affairs, and aptitude through multiple-choice questions.
Practice previous year questions from all UPPSC Prelims papers and compare patterns with UPSC Prelims PYQ to identify overlapping topics.