Which of these statements are correct$?$
- A$(a), (b)$ and $(c)$
- B$(b)$ and $(c)$
- ✓$(a)$ and $(d)$
- DAll four
Answer: C.
View full solution →Question types
Wastewater Story question types
334 questions across 7 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
334
Questions
7
Question groups
5
Question types
01
MCQ (1 Marks)
152 Q→02True False[1 Marks ]
15 Q→03Fill In The Blanks With Correct Alternative.[1 Marks Each]
19 Q→041 Marks Question
65 Q→052 Marks Questions
39 Q→063 Marks Question
31 Q→075 Marks Questions
13 Q→Sample Questions
Wastewater Story questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Study the following statements about ozone:
- AIt is essential for breathing of living organisms.
- ✓It is used to disinfect water.
- CIt absorbs ultraviolet rays
- DIts proportion in air is about $3\%.$
Answer: B.
View full solution →Which of the following happens when the garbage in dumped into the rivers?
- AFishes and water plants die.
- BWater becomes unfit for drinking.
- CThe inlets and ground water sources are blocked.
- ✓All of the above.
Answer: D.
View full solution →When the water is cleaned where is it returned to?
- AOur taps
- ✓The sea
- COur wells
- DThe reservior
Answer: B.
View full solution →The buildings which do not have a sewage system can $........$
- ✓Construct drainage tanks.
- BConstruct septic tanks.
- CConstruct sewage water bodies.
- DConstruct septic canals.
Answer: A.
View full solution →Cooking oil, fats should not be thrown in the drainage system directly. True/ False.
Wastewater is transparent, colourless, odourless. True/ False.
Public places such as railway stations, bus depots, airports and hospitals generate a lot of waste, which leads to diseases. True/ False.
Aerobic bacteria produces biogas sludge in the digester tank. True/ False.
Saprotrophic bacteria feed on dead organisms. True/ False.
Drains get blocked by $.........$ and $.........$
View full solution →Dried $.........$ is used as manure.
View full solution →Wastewater released by houses is called $.........$
View full solution →Cleaning of water is a process of removing $.........$
View full solution →Bacteria play important $.........$ in sewage treatment.
View full solution →Name two chemicals used to disinfect water.
Wastewater is fit for human consumption or not. Give reason to support your answer.
Sewage contains some organic impurities in it. Name them.
In which type of toilets, human excreta is treated by earthworm?
Fill in the blanks:
Wastewater released by houses is called ____________.
Wastewater released by houses is called ____________.
Untreated human excreta is a health hazard. Explain.
What is sludge? Explain how it is treated.
Why should oils and fats be not released in the drain? Explain.
State various uses of water.
A man travelling in a train threw an empty packet of food on the platfrom. Do you think this is a proper waste disposal method? Elaborate.
Explain the relationship between sanitation and disease.
Explain the function of bar screens in a wastewater treatment plant.
Untreated human excreta is a health hazard. Explain.
What is sludge? Explain how it is treated.
Describe the steps involved in getting clarified water from wastewater.
Here is a crossword puzzle: Good luck!
Across
$3.$ Liquid waste products
$4.$ Solid waste extracted in sewage treatment
$6.$ A word related to hygiene
$8.$ Waste matter discharged from human body
Down
$1.$ Used water
$2.$ A pipe carrying sewage
$5.$ Micro-organism which causes cholera
$7.$ A chemical to disinfect water
View full solution →Across
$3.$ Liquid waste products
$4.$ Solid waste extracted in sewage treatment
$6.$ A word related to hygiene
$8.$ Waste matter discharged from human body
Down
$1.$ Used water
$2.$ A pipe carrying sewage
$5.$ Micro-organism which causes cholera
$7.$ A chemical to disinfect water
Explain the different types of inorganic and organic impurities generally present in sewage.
There are many alternative sewage disposal systems which have been developed as per needs of the community, persons, occasions, etc. Few situations/ specifications of the sewage need are given below. Write the name of sewage which can be used in the following conditions.
- A toilet which can provide high quality manure.
- The toilet which is used in aeroplane during flight.
- A toilet which can be used in some out door gathering.
- A toilet used in limited water supply.
- A toilet which contaminates water of hand pump installed nearby.
Describe the steps involved in getting clarified water from waste water.
With reference to the treatment of polluted water at home by aeration, filtration, chlorination processes answer the following Questions.
- What changes did we observe in the appearance of liquid after aeration? Did aeration change the odour?
- What is removed by the sand filter?
- Does chlorine change the colour of treated water?
- Do chlorine have an odour?
Generate a Wastewater Story paper free
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