Water Pollution MCQs Class 8 Science
Water Pollution MCQs Class 8 Science
Class: CBSE Class 8
Subject: Science
Section: 18 – Pollution of Air and Water
Topic: Water Pollution MCQs
Subject: Science
Section: 18 – Pollution of Air and Water
Topic: Water Pollution MCQs
Strictly Based on NCERT Syllabus | Ideal for CBSE Board Examinations
1. Water pollution is the contamination of:
Answer: C. Water bodies
Explanation: When harmful substances mix with rivers, lakes, or groundwater, it causes water pollution.
Explanation: When harmful substances mix with rivers, lakes, or groundwater, it causes water pollution.
2. Main source of water pollution:
Answer: A. Sewage
Explanation: Untreated domestic waste is a major pollutant.
Explanation: Untreated domestic waste is a major pollutant.
3. Industrial waste contains:
Answer: D. All
Explanation: Factories release harmful pollutants into water.
Explanation: Factories release harmful pollutants into water.
4. Water-borne disease:
Answer: B. Cholera
5. Potable water means:
Answer: C. Drinkable
6. Oil spills affect:
Answer: D. All
7. Ganga Action Plan aims to:
Answer: B. Clean river
8. Excess fertilizers cause:
Answer: A. Eutrophication
Explanation: Algal bloom reduces oxygen.
Explanation: Algal bloom reduces oxygen.
9. Water purification removes:
Answer: A. Pollutants
10. Pathogens in water cause:
Answer: A. Diseases
11. Boiling water kills:
Answer: A. Germs
12. Polluted water smells due to:
Answer: B. Decomposition
13. Water pollution reduces:
Answer: A. Oxygen
14. Sewage treatment plants:
Answer: B. Clean wastewater
15. Clean water is:
Answer: D. All
16. Polluted water harms:
Answer: D. All
17. Domestic waste includes:
Answer: D. All
18. Water pollution control:
Answer: D. All
19. Groundwater pollution occurs by:
Answer: D. All
20. Safe water supply is essential for:
Answer: D. All
Explanation: Clean water is vital for life and disease prevention.
Explanation: Clean water is vital for life and disease prevention.
