Advertisements
Advertisements
प्रश्न
Describe how, the water of river Ganga has been highly polluted.
उत्तर
The water of river Ganga has been polluted by various human activities like bathing, washing of clothes, immersion of ashes of dead bodies and unburnt corpses in the river. The untreated sewage and industrial waste is also discarded in the river. Chemical effluents from the industries are also discharged in it. More than hundred towns and cities lie along its way, which discharge their waste in it. This has harmed the aquatic life of this river.
APPEARS IN
संबंधित प्रश्न
What is the name of the process in which rainwater falling on the earth is stopped from flowing and made to percolate into the ground?
Describe briefly the 'khadin' system of rainwater harvesting practised in Rajasthan.
Describe some of the problems associated with the construction of dams.
The river water is said to be polluted with acidic wastes if the pH of river water is :
(a) zero
(b) above 7
(c) below 7
(d) exactly 7
The pH of a sample of water collected from a river is found to be in the range of 3.5 to 4.5. The most likely reason for this is the waste being discharged into the river from a :
(a) soap and detergent manufacturing factory
(b) car battery manufacturing factory
(c) alcohol manufacturing factory
(d) plastic cups moulding factory
What is the importance of rain water harvesting?
Water level in the reservoirs is measured in ______.
If the total water on earth be 100% the percentage of freshwater is ______.
Which of the following is one of the strategies to conserve water?
Which one of the following is not an advantage of farm ponds?