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Class 4 Science Chapter 3 Test 3

Welcome to your Class 4 Science Chapter 3 Test 3

1. 
What is cause of polio?

2. 
It is necessary for the prevention from contagious disease:

3. 
________ is the easiest way to clean water.

4. 
Blood circulates in the body and provides oxygen and food to every part of the body due to ________

5. 
Different dust particles in air mix with rain water and make them _________

6. 
Calcium, iron, sodium, chlorine, fluorine and iodine etc. are called.

7. 
If you have flu then what will do to save yourself and other?

8. 
If our body temperature increases from 98.6F to 101F then its cause is:

9. 
The process by which the particles present in water are separated by a filter is called ______.

10. 
Every year global water day is celebrated on______.