NEET UG · Biology · Chapter 32
Microbes in Human Welfare NEET PYQs (1994–2025)
88 questions from Microbes in Human Welfare have appeared in NEET UG between 1994 and 2025, including 9 in the last five papers (2020–2025). The most-asked topic is Microbes as biocontrol agents and biofertilisers (34 questions). Practise them all with instant answers and step-by-step solutions.
Practise all 88 questions
Check answers, read solutions, filter by year & topic, get a report.
Start free practiceFree · sign in with Google
Solved Microbes in Human Welfare PYQs
3 recent questions with answers. The full set of 88 is free to practise.
- NEET 2025MediumMicrobes in industrial products (antibiotics, beverages)Q1Which of the following microbes is NOT involved in the preparation of household products?
A. Aspergillus niger
B. Lactobacillus
C. Trichoderma polysporum
D. Saccharomyces cerevisiae
E. Propionibacterium sharmanii
Choose the correct answer from the options given below: NEET 2025- AC and D only
- BC and E only
- CA and B only
- DA and C only
Show answer & solution
Correct answer: (D)
Lactobacillus is used for production of curd. Saccharomyces cerevisiae is used for the fermentation of palm sap to obtain toddy drink. Propionibacterium sharmanii is used for production of swiss cheese. Aspergillus niger is used for the commercial production of citric acid. Trichoderma polysporum is used for the production of cyclosporin A and also act as a biocontrol agent. A, C are used in industrial production of citric acid and cyclosporin-A. - NEET 2025EasyMicrobes in industrial productsQ2Streptokinase produced by bacterium Streptococcus is used for NEET 2025
- ALiver disease treatment
- BRemoving clots from blood vessels
- CCurd production
- DEthanol production
Show answer & solution
Correct answer: (B)
Streptokinase produced by the bacterium Streptococcus and modified by genetic engineering is used as a 'clot buster' for removing clots from blood vessels of patients who have undergone myocardial infarction leading to heart attack. Curd production is done by Lactobacillus and ethanol production is done by Saccharomyces. - NEET 2025MediumMicrobes as biocontrol agents and biofertilisersQ3Which of following organisms cannot fix nitrogen?
A. Azotobacter
B. Oscillatoria
C. Anabaena
D. Volvox
E. Nostoc
Choose the correct answer from the options given below: NEET 2025- AB
- BE
- CA
- DD
Show answer & solution
Correct answer: (D)
Azotobacter, Oscillatoria, Anabaena and Nostoc can fix nitrogen but Volvox cannot fix nitrogen.
Topic-wise question count
Where NEET has asked from Microbes in Human Welfare, most frequent first.
- Microbes as biocontrol agents and biofertilisers34
- Microbes in industrial products29
- Biogas production and single cell protein11
- Microbes in sewage treatment6
- Microbes in household products6
- Microbes in industrial products (antibiotics, beverages)2
Year-wise Microbes in Human Welfare questions in NEET
Number of questions from this chapter in each year's paper(s).
The perfect way to practise for NEET & JEE
Mistake Notebook, exam readiness, study planner, smart revision and AI doubt help. All in the VoltClass app.