Advertisements
Advertisements
प्रश्न
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
उत्तर
(b) car battery manufacturing factory
Such factories produce acidic wastes that make the river water acidic.
APPEARS IN
संबंधित प्रश्न
The construction of large dams leads to social and environmental problems. List two problems of each category.
Study the diagram below and answer the questions that follow:
1) Name the activity shown in the diagram.
2) Give two objectives of the activity named in (d) (i).
Explain why, despite good rains, we are not able to meet the demand for water of all the people in our country.
Groundwater will not be depleted due to :
(a) process of afforestation
(b) establishing thermal power plants
(c) process of deforestation
(d) cultivation of high yielding varieties of crops
Mention two advantages of rainwater harvesting.
What is a rain water harvester? How does it work?
Choose the correct option from given alternative:
Which one of the following is responsible for the sustenance of underground water?
Khadins, bundhis, ahars, and kattas are ancient structures built for the purpose of ______
Rainwater harvesting was launched by the Tamil Nadu government in 2011.
Floating leaves have long ______ to enable the leaves to move up and down in response to changes in water level.
