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Q. |
Pick up the incorrect statement regarding a master trap from the following: |
A. | it is provided in between the lower end of the house drain and the street sewer |
B. | it is provided a cleaning eye at the top of the trap |
C. | the mica flap valve which opens inwards only, is fitted at the top of the inlet pipe |
D. | the water seal is less than that of ordinary traps |
Answer» D. the water seal is less than that of ordinary traps |
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