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DNB Microbiology solved question papers

1,185 Previous year DNB Microbiology theory questions, from papers spanning 2015 to 2025, each with a written answer.

What is in this DNB Microbiology question bank

Every question below was typed out of an actual DNB Microbiology theory paper, tagged with its year, month, paper number and marks, so you can revise one paper at a time or one topic across every year. DNB and DrNB theory question papers set by the National Board of Examinations, 2011 to 2026.

Questions
1,185
Recent years
2015 to 2025
Papers
Paper 1, Paper 2, Paper 3, Paper 4, nan

Sample questions from DNB Microbiology papers

Five questions exactly as they appeared on the paper. 1,180 more, plus written answers, with a subscription.

  1. 2025 · December · Paper 1 · 10 marks

    Discuss the germ theory of disease and Koch’s postulates.

  2. 2025 · June · Paper 1 · 5+5 marks

    Write briefly on factors influencing efficacy and methods to test efficacy of sterilant/disinfectant.

  3. 2025 · December · Paper 1 · 10 marks

    What is the basic principle and use of BLAST search in microbiology?

  4. 2025 · June · Paper 1 · 10 marks

    Write about the modifications of PCR as diagnostic aid in various diseases.

  5. 2025 · December · Paper 1 · 10 marks

    What are the different phases of clinical trials and what is the main objective of each?

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Common questions

How many DNB Microbiology previous year questions are available?
1,185 DNB Microbiology theory questions, from papers spanning 2015 to 2025.
Which years of DNB Microbiology question papers are covered?
Recent papers on the site cover 2025, 2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015.
Do the DNB Microbiology questions come with answers?
Yes. Every question has a written long-form answer, a table answer and a mind map, available after sign-in. The sample questions on this page are shown without answers.

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