NEET UG 2020 · Botany · Question 23
NEET 2020 Botany, question 23
Question 23 of the NEET 2020 paper (code E1) is a Botany question from Microbes in Human Welfare. Its idea, Sewage Treatment and Biogas, was asked twice, in 2017 and 2020, across NEET 2017–2026. The NTA final answer key gives option 4.
Updated 2026-10-08
Q23 · Botany
Which of the following is put into Anaerobic sludge digester for further sewage treatment ?
- 1Primary sludge
- 2Floating debris
- 3Effluents of primary treatment
- 4Activated sludgeOfficial answer
Official answer: option 4 · NTA final answer key
Same idea
Sewage Treatment and Biogas, in other papers
NEET asked this idea twice, in 2017 and 2020. The other question below.
- 2017 Q176Which of the following in sewage treatment removes suspended solids ?One-line MCQ · Easy
Sewage Treatment and Biogas: every question and how it was framed
The chapter
Microbes in Human Welfare in ten years of NEET
16 questions from 2017–2026, asked in 9 of 10 papers, about 1.6 a paper. Microbes in Human Welfare alone had 16.