Question

Class X Sciences
[papers from previous years]
How can level of water pollution be measured? List any two ways

Answer 1

water pollution is defined as the presence of organic pollutants like organic matter , toxic substances , microorganisms etc. in the water body which results in contamination of water. The water pollution can be measured by checking the level of various pollutants :
1. Secchi disks
2. probes
3. filters
4. gauges and meters