Advertisements
Advertisements
प्रश्न
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
उत्तर
(c) below 7
Acidic substances have less than 7 pH.
APPEARS IN
संबंधित प्रश्न
The construction of large dams leads to social and environmental problems. List two problems of each category.
Explain briefly, how rainwater harvesting is done from open spaces around the buildings in city areas.
Name some of the ancient structures used for rainwater harvesting by the rural people.
The main reason for the abundant coliform bacteria in the water of river Ganga is :
(a) immersion of ashes of the dead into the river
(b) washing of clothes on the banks of river
(c) discharge of industrial wastes into river water
(d) disposal of unburnt corpses into river water
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
Name two methods of water harvesting in India.
Which environmental problem is associated with the construction of high-rise dams?
Which of the following does not lead to the depletion of groundwater?
Define – Freshwater.
Volume of liquid is measured by ______.
