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Question
  Pick up the incorrect statement from the following regarding fire hydrants
Options:
A .  Fire hydrants are fitted in water mains at 100 m to 150 m apart
B .  The minimum water pressure at fire hydrants, iS kept 1.5 kg/cm2
C .  The water at pressure 1 to 1.5 kg/cm2 is made available for 4 to 5 hours for constant use
D .  None of these:
Answer: Option D

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