Water Supply Engineering

Pick up the correct statement from the following:

  • A. Water with hardness up to 75 ppm is considered soft
  • B. Water with hardness more than 200 ppm is considered hard
  • C. Water needed for laundries should contain hardness less than 75 ppm
  • D. All the above
Answer: Option D.
Explanation: 

IS 14665 gives details about elevators. It specifies the number, capacityof elevator and number of floors to be served.

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