GATE Environmental Microbiology: Microbiology and Health – Previous Year Questions

6 GATE previous year questions on Microbiology and Health (Environmental Microbiology, Environmental Science and Engineering) with answers and explanations, from every paper.

1. GATE 2021 ES Q49 (2 marks, Multiple select) – For conventional water-quality MPN testing, select correct statements.
2. GATE 2022 ES Q16 (1 mark, Multiple choice) – Ten litres of sample is membrane-filtered. The membrane is transferred to coliform-selective agar, incubated37°C for 48 h, and yields an average64…
3. GATE 2022 ES Q17 (1 mark, Multiple choice) – Which statement about reverse-transcriptase PCR for pathogen detection is NOT correct?
4. GATE 2023 ES Q38 (2 marks, Multiple choice) – Consider I Bacteriophage is an anaerobic bacterium;II Male-specific phages infect via pili of other microorganisms including viruses;III Phages occur…
5. GATE 2024 ES Q15 (1 mark, Multiple choice) – Tuberculosis is predominantly caused by which of these organisms?
6. GATE 2026 ES Q18 (1 mark, Multiple choice) – Malaria is caused by which type of microorganism?