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Class 8 Science Chapter 2 Microorganisms Friend And Foe Quiz 7 (25 MCQs)

Quiz Instructions

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1. Vegetables fruits fish meat are preserved by
2. The bread or idli dough rises because of
3. Citrus canker can be seen on
4. Some bacteria are able to fix nitrogen from the atmosphere to enrich soil with nitrogen and increase its fertility.These microbes are called
5. Tell another name for pathogens
6. Who discovered penicillin drug
7. Which are the simplest living organisms on the earth?
8. Any one chemical treatment
9. What happens to food when it is spoiled by microorganisms?
10. What is antibiotic?
11. A fungi which is a rich source of protein
12. Atttered the name of the person who saw a single living beings and explained.
13. Curd sets fastest in .....
14. Can microorganisms exist freely?
15. The first virus research took place in 1935.What was the name of this virus? First Virus Wars Discovered In 1935. What wat W. Virus?
16. Viruses are wrapped in which coat?
17. Disease causing microorganisms are called
18. What is the process called when sugar is converted into alcohol?
19. The process of conversion on sugar into alcohol is known as
20. When did Edward Jenner discovered vaccine for SMALL POX
21. Who discovered Bacillus Anthracis
22. Antibiotics are useful against diseases caused by viruses
23. What are the scientists who study microorganisms called?
24. Who Discovered Small Pox Vaccine?
25. The process of conversion of sugar into alcohol by yeast is called
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