Name the toilets used in areas with limited water supply.

2

(a)

Name the type of toilets which are most suitable for holding an outdoor music festival in a park.

2

(a)

Mention the use of dried sludge.

2

(a)

In which type of toilets, human excreta is treated by earthworm?

2

(a)

Explain sewers and sewage.

2

(a)

The used water should not be wasted. Do you agree? Justify.

2

(a)

Protozoa is causative organism of which waterborne disease?

2

(a)

In the chemical process of water treatment water is treated with some chemicals. Describe chlorination in light of it.

2

(a)

Sanitation can be improved. Explain, what step should be taken to improve it.

2

(a)

What are the harmful effect of releasing untreated sewage in water bodies?

2

(a)

Name two water disinfectants used during treatment of waste water.

2

(a)

Give four examples of diseases caused by drinking contaminated water.

2

(a)

What are contamination sewage? Give examples.

2

(a)

Name two alternative arrangements for sewage disposal where there is no sewerage system.

2

(a)

How would you improve sanitation conditions of an area?

2

(a)