MCQs Class 8 Science Chapter 2 Microorganisms Friends and Foe Online Test

Microorganisms are tiny living organisms that cannot be seen with the naked eye, yet they play an important role in our daily lives. Class 8 Science Chapter 2 – “Microorganisms: Friends and Foe” explains both the useful and harmful effects of microbes in food, medicine, agriculture, and health. By practicing MCQs regularly, students can strengthen their knowledge of microorganisms and their role in life processes. This free online test is perfect for exam preparation and smart revision.

Key Topics of Chapter 2

Students will learn about:

• Types of microorganisms: Bacteria, fungi, protozoa, algae, and viruses
• Useful microorganisms:
  • Production of alcohol, antibiotics, and vaccines
  • Role in nitrogen fixation (Rhizobium, Blue-green algae)
  • Use in food (curd, bread, cheese, etc.)
• Harmful microorganisms:
  • Diseases in humans, animals, and plants
  • Food spoilage
• Food preservation methods – refrigeration, pasteurization, drying, salt and sugar solutions
• Nitrogen cycle and its importance for soil fertility

Also Read- Class 8 Online Free MCQ Test

Class 8 Science Chapter 2 MCQs Online Test

The MCQ Online Test makes revision easy and interesting. Benefits include:

• Quick recall of types, uses, and harms of microbes
• Better understanding of diseases and food preservation methods
• Confidence for exams
• Fun and interactive way to revise science concepts

Please read the instructions carefully before the test.
1. All the students must take note of the time because the time limit is 45 minutes.
2. Attempt all the Questions.
3. Each MCQ carries 1 mark, and each fill-up carries 2 marks.

Class 8 Science Chapter 2 MCQ Online Test with Answers