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Question

(a)
Here is a crossword puzzle: Good luck!​
Across​
3. Liquid waste products​​


(b)
4. Solid waste extracted in sewage treatment


(c)
6. A word related to hygiene


(d)
8. Waste matter discharged from human body


(e)

Down​
1. Used water


(f)

Down​
2. A pipe carrying sewage


(g)

Down​
5. Micro-organisms which causes cholera


(h)

Down​
8. A chemical to disinfect water


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Solution

(a)
The liquid waste in the form of water is called as sewage. It includes the wastewater released by homes,​

industries, hospitals, offices and other users. Therefore, the crossword can be given as,



(b)
The solid waste extracted in sewage treatment is sludge. It is made up of semi-solid wastes like faeces. Therefore, the crossword can be solved as,


(c)

A word related to hygiene is sanitation. It is the process of keeping places clean and healthy, especially by providing a sewage system and a clean water supply.​
Therefore, the crossword can be given as,


(d)

Waste matter discharged from human body is called as excreta. It includes urine, faeces, etc. ​

Therefore, the crossword can be given as,


(e)
Used water is called as wastewater. A wastewater is in lather, mixed with oil, black–brown water that goes down the drains from sinks, showers, toilets, laundries is dirty. Therefore, the crossword can be given as,


(f)
A pipe carrying sewage is known as a sewer. Such pipes form the sewerage. It is like a transport system that carries sewage from the point of being produced to the point of disposalTherefore, the cross-word can be given as,


(g)

The micro-organisms which causes cholera is called bacteria. It is a waterborne disease.​

Therefore, the crossword can be given as,

(h)

A chemical to disinfect water​ is ozone. It is effective at killing microorganisms. ​

Therefore, the crossword can be given as,


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