Question : ______________ is a by product of sewage treatment and can be decomposed to produce biogas.
Option 1: Sewage
Option 2: Sludge
Option 3: Sewer
Option 4: Scum
New: SSC CGL 2025 Tier-1 Result
Latest: SSC CGL complete guide
Suggested: Month-wise Current Affairs | Upcoming Government Exams
Correct Answer: Sludge
Solution : The correct option is Sludge.
Sludge is a byproduct of sewage treatment that may be degraded to generate biogas through a biological process known as anaerobic digestion. Anaerobic digestion is the breakdown of organic materials by microbes in the absence of oxygen. In the case of sewage sludge, organic components such as sewage solids and bacteria are present. Microorganisms break down the organic components of the sludge during the anaerobic digestion process, generating biogas as a byproduct.
Related Questions
Know More about
Staff Selection Commission Combined Grad ...
Answer Key | Eligibility | Application | Selection Process | Preparation Tips | Result | Admit Card
Get Updates BrochureYour Staff Selection Commission Combined Graduate Level Exam brochure has been successfully mailed to your registered email id “”.




