Sewage Systems

Q.

The terms sewage, sewers, and sewerage are interlinked with each other. Can you explain, how?

Q.

Question 13

How are open drains harmful for human health?

Q.

Underground pipes that carry waste water are called __________.

Q.

Question 11

Why are open drains a concern?

Q.

A pipe carrying sewage is called ____________.

1. sewer

2. sewage pipe

3. drain pipe

4. All of the above

Q.

Question 7

The system of a network of pipes used for taking away wastewater from homes or public buildings to the treatment plant is known as
(a) sewers
(b) sewerage
(c) transport system
(d) treatment plant

Q.

Question 4

Open drain system is a breeding place for which of the following?
(a) Flies
(b) Mosquitoes
(c) Organisms which cause diseases
(d) All of these

Q. Match the impurities present in sewage with their types.

(i) Human faeces	(a) Inorganic
(ii) Metals	(b) Organic
(iii) Vibrio cholerae	(c) Bacteria

1. (i) - a, (ii) - (b), (iii) - c
2. (i) - b, (ii) - a, (iii) - c
3. (i) - c, (ii) - b, (iii) - a
4. (i) - c, (ii) - a, (iii) - b

Q.

What is meant sewerage?

Q.

A pipe carrying sewage is called ____________.

1. sewer

2. sewage pipe

3. drain pipe

4. All of the above

Q.

Why proper drainage system is very important?

Q.

What is primary treatment in sewage treatment plants?

Q. Why is ground water a highly overused resource?

Q.

Which drains carry water to sewer system?

Q.

Write certain inorganic impurities in the wastewater?

Q. Identify the organic impurities present in sewage.

1. Animal waste
2. Human faeces
3. Glass
4. Plastic bag
5. Plant leaves
6. Vegetable oil
7. Fruit peel
8. Iron nail

Q. Match the entries in column I with column II.

Column I	` Column II
(a) Wells	(i) Rain
(b) Ground	(ii) Evaporation
(c) Atmosphere	(iii) Underground water

1. (a) - (ii), (b) - (i), (c) - (iii)
2. (a) - (iii), (b) - (i), (c) - (ii)
3. (a) - (i), (b) - (ii), (c) - (iii)
4. (a) - (iii), (b) - (ii), (c) - (i)

Q. Which of the following are the by-products of wastewater treatment ?

1. Sewage and biogas
2. Oil and grease
3. Sewage and sludge
4. Sludge and biogas

Q. The roads dry up after rain. The rain water disappers due to which factors?

1. Evaporation
2. Seepage through ground
3. Flowing into storm drain
4. Condensation

Q.

Write a brief, about disposal and treatment of wastes.

Q.

Question 24

The terms sewage, sewers and sewerage are interlinked with each other. Can you explain, how?

Q. Manholes can not be placed at intersections of pipes.

1. \N
2. \N

Q.

Which of the following tree is suggested to be grown near sewage ponds?

1. Eucalyptus tree

2. Neem tree

3. Rain tree

4. Indian cork tree

Q.

In the above plan, Anu’s village added a main line parallel to the Ganga River to divert wastewater from directly entering the river. This line (pipe) transferred the sewage to a wastewater plant. This drain/line/pipe is called

___

Q. Septic tanks are suitable for place:

1. where there is sewerage system.
2. where there is no tank system.
3. where there is no sewerage system.
4. where there is tank system.

Q.

Question 12

Some definitions are given below which can be corrected by changing one word. Correct them.
(a) Aquifer is groundwater stored between layers of hard rock above the water table.
(b) The process of evaporation of water in the ground is called infiltration.
(c) The evaporation of water from oceans and its arrival back into oceans is called vapour cycle.

Q. Disposal of sewage in large cities, is done in

1. Irrigation
2. Dilution
3. Oxidation
4. Putrifaction

Q. In a city, there are separate pipes for disposing sewage and storm water. Why is this necessary?

Q.

Pick up the correct arrangement among the given sets below and pick up the correct arrangement which can be used for sewage disposal.

1. Set 4

2. Set 1

3. Set 3

4. Set 2

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

1. Compost pits
2. Chemical toilets
3. Septic tanks
4. Wastewater treatment plant