Question

13. Tick mark () the correct answers.
1. The disease caused by polluted water
(a) Jaundice (b) Dysentery
(c) Cholera (d) All of these
2. Malaria can be triggered by
(a) Open drains (b) Closed drains
(c) Taps (d) Pipe lines
3. Waste that can be broken down by bacteria
(a) Biological
(b) Blochemical
(c) Biodegradable
Chemical
Stage of wastewater treatment for removing large particles
(a) Disinfection (b) Secondary
(c) Primary
(d) Chlorination​

Answer 1

Answer:

1.c

2.a

3.c

4.d

hope this may help you.

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