Wastewater Story MCQ Questions Class 7 Science Chapter 18
NCERT MCQ Questions for Class 7 Science Chapter 18 Wastewater Story. Wastewater Story MCQ Questions with Answers from Class 7 Science.
Wastewater Story MCQ Questions Class 7 Science Chapter 18
Wastewater Story Multiple Choice Questions with Answers Class 7 Science Chapter 18 PDF is available.
1.) The process of removing pollutants before it enters a water body or is reused is called ___ ?
a) Cleaning of water
b) Sewage treatment
Ans. a) Cleaning of water
2.) The process of wastewater treatment is known as ___ ?
a) Cleaning of water
b) Sewage treatment
Ans. b) Sewage treatment
3.) The wastewater released by home is ___ ?
a) Sewage
b) Sewerage
Ans. a) Sewage
4.) The large objects like rags , sticks etc are removed from wastewater by ___ ?
a) Bar screen
b) Water clarifer
Ans. a) Bar screen
5.) Solids like faeces are removed from water with a ___ ?
a) Bar screen
b) Scraper
Ans. b) Scraper
6.) ___ removes the floatable solids like oil and grease from water ?
a) Scraper
b) Skimmer
Ans. b) Skimmer
7.) Dried ___ is used as manure ?
a) Sludge
b) Sewage
Ans. a) Sludge
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8.) A pipe carrying sewage is called ___ ?
a) Sewer
b) Sewerage
Ans. a) Sewer
9.) The bacteria which causes cholera is ___ ?
a) Salmonella paratyphi
b) Vibrio cholera
Ans. b) Vibrio cholera
10.) The bacteria which causes typhoid is ___ ?
a) Salmonella paratyphi
b) Vibrio cholera
Ans. a) Salmonella paratyphi
11.) The microbes which cause dysentery are ___ ?
a) Protozones
b) Vibrio cholera
Ans. a) Protozones
12.) The sewage that removed from kitchen is called ___ ?
a) Trade waste
b) Foul waste
c) Sullage waste
Ans. c) Sullage waste
13.) The sewage that removed from toilets is called ___ ?
a) Trade waste
b) Foul waste
c) Sullage waste
Ans. b) Foul waste
14.) The sewage that removed from industrial and commercial organisations is called ___ ?
a) Trade waste
b) Foul waste
c) Sullage waste
Ans. a) Trade waste
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