Start learning →

Anaerobic sludge digesters produce a gas mixture of methane, carbon dioxide and:

AOzone and helium
BHydrogen sulphide
COxygen and argon
DNitrogen dioxide
Answer & Solution
Correct answer: B. Hydrogen sulphide
1. Anaerobic bacteria digest the sludge. 2. The gases include hydrogen sulphide. 3. The mixture is biogas. _Source: syllabus Biology, Chapter 10, Microbes in Human Welfare._
Practise this question with Quill — UPSC CSE →

Keep practising Science & Technology

Browse all Science & Technology questions for UPSC CSE, or explore more Science topics.

Start a Science & Technology lesson →
Related questions
Health and disease bingoType the numberSort the disease causesAcute or chronicSlice the health wordsRun the disease routesPop the infectious agentsCatch the bacterial diseases