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Which of the following traps is commonly known as nahni trap?

(a) Floor trap

(b) Gully trap

(c) Silt trap

(d) Grease trap

I got this question in an online interview.

This question is from Plumbing for Buildings in portion Plumbing for Buildings of Construction & Building Materials

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Correct choice is (a) Floor trap

Easy explanation: Traps are classified into floor traps, gully traps, grease traps, silt tarps and intercepting traps according to their use. A floor trap is commonly called nahni trap. It is used to collect wash water from kitchens, floors and bathrooms.

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