Science Class 8- Chapter 2- Microorganisms: Friend and Foe – Quiz 6

10 Questions, each question is of 1 mark. No negative marking. Full Marks=10.

1. 
Common cold is caused by which type of microbe?

2. 
Which one of the following is not a method of food preservation?

3. 
How much nitrogen is present in the atmosphere?

4. 
Malaria is caused by which type of microbe?

5. 
An infectious disease is _________ .

6. 
__________ are the agents that act as carriers of a pathogen and spread diseases.

7. 
Which human diseases are caused by protozoa?

8. 
The gas released during the preparation of bread is

9. 
Choose the way which are not responsible for the spread of communicable disease

10. 
Substance used to produce immunity against diseases in the living body is called

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