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In a bio-gas plant, the sealed chamber where cow-dung slurry decomposes without oxygen is the:

ADigester
BMixing tank
CGas outlet
DSlurry pit
Answer & Solution
Correct answer: A. Digester
1. Slurry is made in the mixing tank first. 2. Anaerobic microbes work in the digester. 3. Gas collects in the tank above it. _Source: syllabus Science, Chapter 14, Sources of Energy._
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