Advertisements
Advertisements
प्रश्न
A person was using water supplied by Municipality. Due to shortage of water he started using underground water. He felt laxative effect. What could be the cause?
उत्तर
The laxative effect is observed only when the concentration of sulphates in water is greater than 500 ppm. Sulphate is harmless at moderate concentration but concentration above 500 ppm produces laxative effects and hypertension.
APPEARS IN
संबंधित प्रश्न
Give one example of A water pollutant.
Study the picture given below and answer the following questions :
State one measure to control this pollution.
A lot of fish are dying near a sea shore. Describe any two possible causes.
Answer the following question:
Name two human diseases caused due to water pollution.
True or False:
Sources of groundwater pollution include leaking sewer lines, pumping wells, landfills, fertilizer, and sludge.
With reference to the sources of water pollutants answer the following question:
How do the radioactive wastes get into the water bodies?
Do not throw plastic garbage when you go near beaches.
Oxygen is returned to the atmosphere mainly by
Read the paragraph and answer the questions following it.
Water is essential for life. Without water there would be no life. We usually take water as granted for its purity, but we must ensure the quality of water. Pollution of water originates from human activities. Through different paths, pollution reaches to groundwater. Easily identified source or place of pollution is called as point source, e.g. municipal and industrial discharge pipes, where pollutants enter the water source. Non-point sources of pollution are those where a source of pollution cannot be easily identified, e.g. agricultural run-off, acid rain, etc.
- How do you classify the various sources of water pollution?
- What are the point sources of water pollution?
- Name any two non-point sources of water pollution?
Water sample is called cleanest on the basis of which one of the BOD values is given below.
