Environmental Chemistry-2 Water – Online MCQs – Chemistry 10th

1. Fluorosis can harm our:

2. It is a gastrointestinal ailment caused by a waterborne microbe (protozoa) that causes diarrhea and vomiting.

3. What percentage of water on the earth is fresh water?

4. Hookworm larvae enter the body via the:

5. Without water, a person can live no more than:

6. Water is a:

7. In this disease the liver stops working, and the eyes turn yellow the patient is weak and tired.

8. How much percentage (%) of the Earth’s Surface is covered with water?

9. Water makes up around of the earth's surface.

10. At 4°C, maximum density of water is:

11. It is a kind of gastrointestinal infection caused by bacteria or parasites.

12. The permanent hardness of water is due to presence of:

13. What percentage of water on the earth is salt water?

14. Which of the following water-borne diseases is of viral origin?

15. Which salts are excessively dissolved to make temporary hard water:

16. An excess of bile pigments in the blood causes

17. The taste of water is:

18. Which type of bond is formed between H₂O molecules:

19. The mechanism by which water rises from the roots of-plants to the leaves is known as:

20. What percentage of fresh water is accessible to humans?