Advertisements
Advertisements
प्रश्न
Define pollution. “Industries are pouring poison in water” - Explain
Advertisements
उत्तर
Definition : “Substances present in the air / water / soil produced by the activity of mankind in concentration sufficient to cause harmful effect to his health, vegetables, property or to interfere with the enjoyment of his property is called as pollution”.
(1) Most of the Indian rivers and fresh water streams are seriously polluted by industrial wastes and effluents. Such pollutants come along waste waters of different industries such as petrochemical complexes; fertilizer factories; oil refineries; pulp, paper, textile, sugar and steel mills, tanneries, distillaries, coal washeries, synthetic material plant for drugs, fibres, rubber, plastic etc.
(2) In India all the 14 rivers have become polluted. Some most polluted rivers in Maharashtra like Mula-Maratha in Pune, Panchganga in Kolhapur, Patalaganaga in Panvel are heavily polluted having a variety of industrial and petrochemical wastes. The river Ganga from Hardwar and Kolkata is regarded is one uneding sewer which is fit only to carry urban liquid wastes, half burnt dead bodies, pesticides and insecticides.
APPEARS IN
संबंधित प्रश्न
What do you mean by Biochemical Oxygen Demand (BOD)?
An example of non-biodegradable waste is
A. Vegetable peels
B. Sewage
C. Livestock waste
D. DDT
What do you do in the following situations:
Get turbid drinking water during monsoon.
Study the picture given below and answer the following questions :
Name one pollutant that causes the above the pollution.
Study the picture given below and answer the following questions :
State one measure to control this pollution.
With reference to the sources of water pollutants answer the following question:
In what way does the industrial waste pollute water?
What are the pollutions caused by the objects given below?
- Loud Speaker
- Plastic
Excess of fluoride in drinking water causes:
Write notes on the following:
Algal Bloom
Hot water discharged into water bodies hardly affects the fish and other aquatic life.
