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Manholes in a sewerage system are located every:

A50 to 60 m
B5 to 6 m
C500 to 600 m
D10 to 20 m
Answer & Solution
Correct answer: A. 50 to 60 m
1. They also sit at junctions and bends. 2. Manholes come every 50 to 60 metres. 3. They allow inspection of sewers. _Source: syllabus Science, Chapter 18, Wastewater Story._
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