3. Which out of the following methods can be used to dispose sludge?
a. Incineration
b. Addition of chlorine
C. Aeration
d. Sedimentation
4. Which of the following is a water-borne disease?
a. Tuberculosis b. Asthma
C. Cancer
d. Cholera
5. Which out of the following is an alternative method of sewage disposal?
a. Sewer system
b. Vermi-composting toilets
C. Biogas plants
d. Both b and c
Answers
Answered by
2
Answer:
3-a; 4-d; 5-d
please like and follow me
Answered by
1
Answer:water pollution
Explanation:
Similar questions