Waste water

Q. What is the meaning of sewage

Q.

Question 10

Which of the following is not a source of wastewater?
(a) Sewers
(b) Homes
(c) Industries
(d) Hospitals

Q.

The system of a network of pipes used for taking away wastewater from homes or public buildings to the treatment plant is known as

1. Sewers

2. Sewerage

3. Transport system

4. Wastewater treatment system

Q.

Name the two bi-products of wastewater treatment.

Q.

Water shortage has become a matter of concern throughout the world. Understanding the pressing need of the hour, you decided to organize an event emphasizing the importance of water on World's Water day. This was done on:

1. 2^nd March

2. 21^st March

3. 12^th March

4. 22^nd March

Q. Which of the following is not a physical impurity present in sewage?

1. Banana peels
2. Batteries
3. Tissue rolls
4. Calcium

Q.

Which of the following is wastewater?

1. Water trickling from a damaged tap

2. Water coming out of a shower

3. Water flowing in a river

4. Water coming out of the laundry

Q.

Which of the following describes combined sewer system?

1. Combination of sewage water and waste water

2. Combination of drinking water and waste water

3. Combination of rain water and drinking water

4. Combination of sewage water and rain water

Q.

Question 1

Which of the following is wastewater?
(a) Water trickling from a damaged tap
(b) Water coming out of a shower
(c) Water flowing in a river
(d) Water coming out of a laundry

Q.

Which of the following statement is incorrect about wastewater?

1. Human waste

2. Chemicals

3. All of these

4. Food scraps

Q.

What is potable water?

Q. Write the differences between primary and secondary treatment of wastewater? [4 marks]

Q.

Which of the following generates wastewater?

1. Homes

2. Farms

3. Industries

4. All of the above

Q.

What of the following is present in the wastewater?

1. Human waste

2. Food scraps

3. Chemicals

4. All of these

Q. Which of the following according to you is the most appropriate reason to celebrate 'World Water Day'?

1. To find new uses of water
2. To study the chemistry of water
3. To understand the importance of water conservation
4. To promote proper washing of clothes

Q. Majority of freshwater is used for ______.

1. bathing
2. cooking
3. washing
4. agriculture

Q. Which of the following according to you is the most appropriate reason to celebrate 'World Water Day'?

1. To find new uses of water
2. To study the chemistry of water
3. To understand the importance of water conservation
4. To promote proper washing of clothes

Q. Metals are a type of ____ impurity present in wastewater.

1. dissolved hydrogen
2. dissolved oxygen
3. dissolved nitrides
4. dissolved salts

Q. Wastewater is toxic to aquatic life.

1. \N
2. \N

Q. Wastewater need not be treated before it enters water bodies.

1. \N
2. \N

Q.

Sewage contains which of the following wastes and impurities?

1. Dissolved wastes

2. Non-biodegradable wastes

3. Suspended impurities

4. Biodegradable impurities

Q. Wastewater does not contain harmful chemicals.

1. \N
2. \N

Q.

Which of the following is not a source of wastewater?

1. Houses

2. Water wells

3. Industries

4. Hospitals

Q. Wastewater does not contain harmful chemicals.

1. \N
2. \N

Q. Which of the following according to you is the most appropriate reason to celebrate 'World Water Day'?

1. To find new uses of water
2. To study the chemistry of water
3. To promote proper washing of clothes
4. To understand the importance of water conservation

Q.

Arrange the following events of a wastewater treatment plant in a correct order.

Q. Which of the following is not a source of wastewater?

1. Domestic waste.
2. Water wells.
3. Industrial waste.
4. Hospital waste.

Q. Wastewater does not contain harmful chemicals.

1. \N
2. \N

Q. For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed

1. 3 ppm
2. 4 ppm
3. 5 ppm
4. 8 ppm

Q.

World water day is celebrated on ____.

1. 22^nd May

2. 22^nd April

3. 22^nd March

4. 22^nd July