The domestic sewage in large cities
- has a high BOD as it contains both aerobic and bacteria
- is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plants (STPs)
- when treated in STPs does not really require the aeration step as the sewage contains adequate oxygen
- has very high amounts of suspended solids and dissolved salts
The Correct Option is B
Solution and Explanation
Top Questions on Water pollution
- Which of the following disease is commonly caused by water pollution?
- CUET (UG) - 2024
- Geography
- Water pollution
Which of the following industries generate non-biodegradable wastes?
1) Cotton mills
(2) Paper mills
(3) Thermal power plants
(4) Textile factories- TS EAMCET - 2024
- Chemistry
- Water pollution
- Methemoglobinemia is due to:
- TS EAMCET - 2024
- Chemistry
- Water pollution
The IUPAC name of the following compound is:
- TS EAMCET - 2024
- Chemistry
- Water pollution
- Discuss the problems of water pollution in India.
- UP Board XII - 2024
- Geography
- Water pollution
Questions Asked in AIIMS exam
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A) : 02 is liberated in the non-cyclic photophosphorylation.
Reason (R) : Liberation of oxygen is due to photolysis of water.
In the light of the above statements, choose the correct answer from the options given below
- AIIMS - 2019
- Photosynthesis in higher plants
- Which gas is present predominantly in biogas
- AIIMS - 2019
- Aerobic Respiration
- Match the following column I with column II.
- AIIMS - 2019
- cloning
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A) : The Cro-Magnon man was the direct ancestor of the living modern man.
Reason (R) : Cro-Magnon man had slightly prognathous face.
In the light of the above statements, choose the correct answer from the options given below
- AIIMS - 2019
- evolution
- Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion: Orbit of a satellite is within the gravitational field of earth whereas escaping is beyond the gravitational field of earth.
Reason: Orbital velocity of a satellite is greater than its escape velocity.
In the light of the above statements, choose the correct answer from the options given below- AIIMS - 2019
- Gravitation
Concepts Used:
Water Pollution
- Water pollution means the contamination of water bodies such as seas, lakes, rivers, aquifers, oceans, and groundwater caused majorly due to inhuman activities with industrial and agricultural effluents. It is the change of chemical, biological, or physical properties of water that will result in a destructive consequence for living organisms.
- Portable water is considered safe for human and animal consumption as well as used for drinking, cooking, crop irrigation, washing, etc,. Nowadays, chemicals, bacteria, and other pollutants are also influencing this. It adversely acts on all the living forms, directly or indirectly depending upon the source. The effects of water pollution can be felt for years to come.
Sources of Water Pollution:
The following are the major sources of Water Pollution:
- Domestic Waste
- Urbanization
- Deforestation
- Industrial effluents
- Social and Religious Practices
- Insecticides and pesticides
- Detergents and Fertilizers