Homework Practice

Printable assignment

Final Assessment: Wastewater Story

Section A: Key Concepts

Question 1mcq

How is sanitation connected to health?

A.Safe sanitation reduces spread of disease-causing germs.

B.Sanitation only changes light direction.

C.Sanitation increases sewage contact.

D.Sanitation has no link with public health.

Question 2mcq

Which disease risk increases with unsafe sewage disposal?

A.Near-sightedness only

B.Water-borne infections such as diarrhoea

C.Magnetism in wires

D.Lateral inversion.

Question 3mcq

Why is handwashing after using the toilet important?

A.It makes hands magnetic.

B.It splits white light.

C.It removes germs that may spread disease.

D.It lowers groundwater table.

Question 4mcq

Which situation shows poor sanitation?

A.Using a clean toilet connected to safe treatment

B.Washing hands with soap

C.Keeping drains covered.

D.Open defecation near a water source

Question 5mcq

Why should sanitation workers use protective equipment?

A.They may be exposed to pathogens and toxic gases.

B.Protective equipment makes sewage vanish.

C.Sewage is always harmless.

D.Workers use it only for decoration.

Question 6mcq

Which item should not be thrown into a toilet or drain?

A.Small amount of used washing water

B.Plastic wrapper

C.Bath water

D.Toilet wastewater into sewer system.

Section B: Applications

Question 7mcq

Why should cooking oil not be poured into drains?

A.It improves oxygen supply in sewers.

B.It becomes clean drinking water instantly.

C.It can clog pipes and disturb treatment.

D.It helps all microbes equally.

Question 8mcq

Which disposal choice is most responsible for expired medicines?

A.Flush all medicines into the toilet.

B.Throw them into a stream.

C.Mix them with cooking oil and pour into drain.

D.Follow local safe disposal guidance instead of flushing them.

Question 9mcq

A sink is blocked after people throw tea leaves and food scraps into it. What lesson does this show?

A.Solid waste should be kept out of drains.

B.More solid waste cleans pipes.

C.Food scraps dissolve pipes safely.

D.Drain blockages are unrelated to waste.

Question 10mcq

Which statement is a good drain-use rule?

A.Drains are the best place for plastics.

B.Use drains for wastewater, not for solid garbage.

C.All chemicals are safe to pour into drains.

D.Blocked drains clean themselves immediately.

Question 11mcq

Which option is an alternative sanitation method for places without sewer connections?

A.Open defecation near water

B.Dumping sewage into ponds

C.Composting toilet or septic tank system

D.Using a mirror as a drain.

Question 12mcq

Why are septic tanks used in some rural or low-density areas?

A.They are used to split white light.

B.They pump air into forests.

C.They remove the need for toilets.

D.They treat household sewage locally.

Section C: Observations and Data

Question 13mcq

What is one advantage of a composting toilet when properly managed?

A.It can reduce water use and convert waste into safer compost.

B.It uses more water than flushing always.

C.It releases raw sewage into streets.

D.It requires a river beside every house.

Question 14mcq

Which condition is essential for any alternative sanitation method?

A.It must smell strongly at all times.

B.It must prevent human contact with untreated waste.

C.It must discharge waste into open drains.

D.It must avoid all maintenance forever.

Question 15mcq

A school without sewer access needs toilets urgently. Which plan is most scientific?

A.Allow open defecation behind classrooms

B.Send untreated waste to a nearby stream

C.Install a maintained septic or composting system with handwashing facilities

D.Use only air freshener to remove smell.

Question 16mcq

A wastewater plant removes solids but skips disinfection. What is the main risk?

A.The water will become a mirror.

B.All sludge will become oxygen.

C.No pollutant can remain after screening.

D.Disease-causing microbes may remain in the water.

Question 17mcq

A village drain carries sewage into a pond used for washing. What is the best recommendation?

A.Stop sewage entry and treat wastewater before release.

B.Add more plastic waste to the pond

C.Use the pond more often without changes

D.Cover the pond with mirrors.

Question 18mcq

Which data would best show improvement after sanitation work?

A.More blocked drains

B.Fewer sewage overflows and fewer water-borne illness cases

C.More open waste near wells

D.More oil poured into sinks.

Section D: Reasoning Challenge

Question 19mcq

A treatment plant receives many plastic bags. Which stage is most affected first?

A.Disinfection stage only

B.Biogas storage only

C.Screening stage

D.Aeration by clean air only.

Question 20mcq

Which household action helps the whole wastewater system work better?

A.Flushing cloth and wrappers

B.Pouring paint into the sink

C.Using toilets as dustbins.

D.Keeping oils, plastics and chemicals out of drains

Question 21mcq

A town has repeated sewer blockages. Which behaviour change would help most?

A.Stop throwing plastics, cloth and oils into drains.

B.Flush more plastic to push waste forward.

C.Open all drains to rainwater and garbage.

D.Skip screening at the treatment plant.

Question 22mcq

After screening, many small suspended particles still remain. Which process helps remove them?

A.Reflection

B.Sedimentation

C.Pollination

D.Lateral inversion

Question 23mcq

Why is clean drinking water not enough if sanitation is poor?

A.Sanitation affects only mirrors.

B.Wastewater has no microbes.

C.Germs from waste can still contaminate surroundings and spread disease.

D.Clean water stops all drain blockages.

Question 24mcq

Which household practice protects sewage workers and treatment systems?

A.Use drains for broken glass

B.Flush cloth pieces regularly

C.Pour paint and medicine into sinks.

D.Do not pour harsh chemicals or sharp objects into drains.