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प्रश्न
With reference to pollution, explain the following:
Water pollution
उत्तर
Water pollution is caused by contamination of water by alteration in physical, chemical, biological characteristics of water making it unsuitable for designated use in its natural state.
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संबंधित प्रश्न
Choose the ODD one out from the following terms given and name the CATEGORY to which the others belong:
Detergents, X-rays, sewage, oil spills
Name the following :
One gaseous compound which depletes the ozone layer.
Read the passage and identify the sentences expressing types of pollution.
Nilesh is a student of Std. VII and lives in urban area. It takes about an hour to go to the school by bus. He faces the heavy traffic of two wheelers, four wheelers, rickshaws, buses while going to school. He is facing the problem of asthma since last few days, Doctors recommended him to stay away from urban area. Since then, his mother sent him to the village of his maternal uncle, Nilesh saw the heaps of garbage at many places in village. Foul smell of human and animal wastes was present at many places. Blackish water with foul smell was flowing in a stream. He developed some abdominal disease within few days.
Which are invisible pollutants?
Which one of the following is an example of pollutant?
Give the definition of a pollutant.
Define water pollution
Why should we avoid soil pollution?
What’s the solution?
Rivers and lakes are filled with water hyacinth.
Certain toxic gases from industries mix with raindrops and make rain unusually acidic.
