Question

A. Multiple Choice Questions (MCQs).
1. Vegetable peelings, come from:
(a) agricultural wastes
(b) industrial wastes
(c) biodegradable wastes
(d) household wastes
2. Which of the following diseases is caused by improper disposal of sewage?
(a) heart attack
(b) typhoid
(c) cold
3. Which of the following is a waterborne disease?
(a) dysentery
(b) malaria
(c) pneumonia
4. The last step in wastewater treatment is a
process.
(a) biological
(b) mechanical
b
(c) chemical
Sludge is treated with:
(a) aerobic bacteria
(b) anaerobic bacteria
(c) chemicals
(d) none of these
The increasing scarcity of fresh water is due to:
(a) population growth​

Answer 1

Answer:

1. (c)

2.(b)

3.(a)

4.(a)

Answer 2

Answer:

1. d

2.a

3.a

4.a

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Explanation: