Sewage treatment and energy generation (biogas)
- Which one of the following statements is NOT correct? Answer: 3. Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries. Key idea: Algal blooms caus... 1
- Which of the following is put into Anaerobic sludge digester for further sewage treatment ? Answer: 4. Activated sludge Key idea: In secondary treatment, a part of the activated sludge is passed to anaerobic sludge digesters. Bacter... 1
- Which of the following in sewage treatment removes suspended solids ? Answer: 2. Primary treatment Primary treatment of sewage is physical: filtration and sedimentation remove floating and suspended solids. Sec... 1
- Which of the following is correctly matched for the product produced by them ? Answer: 3. Saccharomyces cerevisiae : Ethanol Key idea: Match each microbe with a real product. Methanobacterium makes methane (biogas), not... 1
- The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the : Answer: 3. Methanogens Methanogens are archaebacteria found in the rumen of cattle. They produce methane and are responsible for biogas prod... 1