Question

Tick (/) the correct option:
1. Sewage pollutes
(a) soil
(b) water
(c) seas
(d) all of these
2. Deforestation causes:
(a) soil erosion
(b) loss of habitat
(c) floods
(d) all the three
3. Which of these is a part of the wastewater
treatment plant?
(a) clarifier
(b) vertical bars
(c) aeration tank
(d) all of them
4. The solid waste separated from domestic sewage
is called
(a) slurry
(b) humus
(c) sludge
(d) manure
5. Which of these methods should not be used for
disposal of urine and faeces if no sewage system
is available?
(a) allowing untreated sewage to flow into rivers
(b) making septic tanks for sewage to flow into
(c) allowing sewage to flow into biogas plant
(d) using a vermi-composting toilet
6. Which of these diseases is not caused by
improper disposal of sewage?
(a) cholera
(b) jaundice
(c) typhoid
(d) heart attack​

Answer 1

Answer:

1. d)

2.d)

3d)

4.c)

5)a)

6.d)

Answer 2

Explanation:

✳Answer✳

✳↕️↕️↕️✳

✳1.(a)✳

✳2.(b)✳

✳3.(c)✳

✳4.(d)✳

✳5.(a)✳

✳6.(d)✳