Microbes in Human Welfare – CBSE Class 12 Previous Year Questions (2024–2026)

All 7 CBSE Class 12 previous-year questions from Microbes in Human Welfare (Biology), 2024–2026, taken from 5 papers. Practise them together in one test with the official marking and answer key, then review every answer.

▶ Practise all 7 questionsAll CBSE Class 12 chapters

Microbes in Human Welfare questions by paper

Sample questions

• CBSE Class 12 Biology Board 2026 (Set 57/1/1)
  For Questions number 18 to 16 two statements are given one labelled as Assertion A and the other labelled as Reason Select the correct answer to these questions from…
• CBSE Class 12 Biology SQP 2026-27
  A biotechnology company grew Streptomyces in a fermenter to produce an antibiotic It was observed that Day 7 onwards the actual yield drops sharply even though nutrient…
• CBSE Class 12 Biology Board 2025 (Set 57/1/1)
  Match the items in Column-A with that of Column-B Column-A Column-B Ladybird beetle a Methanobacterium ii Mycorrhiza Trichoderma iii Biological control Aphids iv Biogas…
• CBSE Class 12 Biology Board 2024 (Set 57/1/1)
  Lactobacillus that sets milk into curd is categorised as A Cyanobacteria Archaebacteria Chemosynthetic bacteria Heterotrophic bacteria

Question text shown from the scanned paper; open the test to see each question exactly as printed.

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• Sexual Reproduction in Flowering Plants 13
• Human Reproduction 9
• Reproductive Health 5
• Principles of Inheritance and Variation 12
• Molecular Basis of Inheritance 17
• Evolution 9
• Human Health and Disease 7
• Strategies for Enhancement in Food Production 3
• Biotechnology: Principles and Processes 16
• Biotechnology and its Applications 9
• Organisms and Populations 2
• Ecosystem 4
• Biodiversity and Conservation 2
• Environmental Issues 2