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The size of the rainwater pipe commonly used in house drainage is _________(a) 40 mm(b) 75 mm(c) 90 mm(d) 115 mmI had been asked this question in an online quiz.My doubt is from Plumbing for Buildings in division Plumbing for Buildings of Construction & Building Materials |
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Answer» CORRECT answer is (B) 75 mm The best I can explain: The SIZE of the rainwater pipe commonly used in house drainage is 75 mm. This type of pipe CARRIES only rainwater. |
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