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Bio-gas is an excellent fuel because it contains up to what share of methane?

A95 per cent
B75 per cent
C25 per cent
D50 per cent
Answer & Solution
Correct answer: B. 75 per cent
1. It burns without smoke or ash. 2. It has up to 75 per cent methane. 3. The leftover slurry is rich manure. _Source: syllabus Science, Chapter 14, Sources of Energy._
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