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UPPSC Prelims 2025GS-IQ. 28 of 248
Q. 281 markMedium
UPPSC Prelims 2025·GS-I
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:
(a)1 and 3
(b)3 and 4
(c)2 and 3
(d)1 and 2