Free printable worksheet
Class 9 · Water Security · 10 Aug 2026
1.
Match the water quality parameter with its primary health concern or consequence when present in excess in drinking water.
[2 marks]| Column A | Column B |
|---|---|
| 1. Fluoride | a. Dental and skeletal fluorosis |
| 2. Nitrate | b. Blue baby syndrome (Methemoglobinemia) |
| 3. Lead | c. Damage to the central nervous system |
| 4. Iron | d. Staining of laundry and bitter metallic taste |
Answer: __________________________________________
2.
In traditional arid water management of Western Rajasthan, _____ are long earthen embankments built across hill slopes to capture runoff for agriculture.
[2 marks]
3.
State the standard unit used to measure turbidity in water quality testing.
[1 mark]
4.
Explain why groundwater in certain districts of West Bengal exhibits high levels of arsenic, and state the primary health hazard associated with its long-term consumption.
[3 marks]
5.
Diagram
AI visual
Identify the key components of a standard rooftop rainwater harvesting system from the labeled diagram.
[2 marks]
Label the following:
1. ___________________
2. ___________________
3. ___________________
4. ___________________
5. ___________________