DIRECTION:
Carefully
observe pictures given below and answer the following questions.
Look
at the above diagram of sewage treatment plant and answer the questions that
follow.
A) To remove germs
B) To remove sand and grit
C) To remove cans, plastics, napkins etc.
D) To remove oil and grease
Correct Answer: C
Solution :
To remove cans, plastics, napkins etc.
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