Wastewater

Q.

Write different sources of wastewater?

Q.

Which type of toilet is used in aeroplanes

Q. Which of the following statements are correct about ozone?

1. It is used to disinfect water.
2. It absorbs ultraviolet rays.
3. It removes large objects from wastewater.
4. It has no effect on wastewater.

Q.

Industrial wastewater and __________ is the major cause of the pollution of rivers.

Q.

How do bar screen and grit and sand removal tank help in clarification of water?

Q. Jose works in a water treatment plant. On testing a sample of water to be supplied for drinking, he found that it is not germ-free. What should he do?

1. Carry out filtration
2. Perform sedimentation
3. Release it to water distribution system
4. Pass chlorine through it

Q. Wastewater can be harmful to the environment.

1. True
2. False

Q.

In the process of extraction of Cu, FeSi0₃ is produced as slag.Which of the below mentioned way(s) helps us to handle the slag?

1. FeSi0₃ can be used as a raw material for the extraction of Silica thereby reducing the amount wasted.

2. Both of these.

3. None of these.

4. Slag should be disposed properly so it doesn't cause much pollution.

Q. Which amongst the following is not an example for onsite sewage disposal system?

Q. Wastewater from toilets is generally in colour, whereas from household activities is in colour.

1. black
2. orange
3. blue
4. grey

Q. Wastewater from toilets is generally in colour, whereas from household activities is in colour.

1. black
2. orange
3. blue
4. grey

Q. What is wastewater? What does it contain?

Q. Trash can containers must be covered properly to prevent dispersal of trash by animals or wind.

1. True
2. False

Q. Contaminants pollute the water resources.

1. False
2. True

Q. Which amongst the following disease is caused due to the consumption of unsafe water?

1. Diarrhoea
2. Smallpox
3. Malaria
4. Chickenpox

Q. Diseases like typhoid and cholera are caused due to ________ .

1. global warming
2. greenhouse effect
3. water pollution
4. air pollution

Q. Wastewater can be harmful to the environment.

1. True
2. False

Q. Choose the correct pair of impurities in water with their types.

1. Physical
2. Chemical
3. Biological
4. Sand & Clay
5. Arsenic & Lead
6. Bacteria & Virus

Q. Dead zones in oceans are caused due to contaminants in water.

1. False
2. True

Q. Diseases like diarrhoea can be caused due to ______ pollution.

1. water
2. air
3. soil
4. noise

Q. Statement I: Diarrhoea can cause death.
Statement II: Drinking polluted water can cause diarrhoeal diseases.

1. Statements I and II are true
2. Statements I and II are false
3. Statement I is true but II is false
4. Statement I is false but II is true