10 free CCHT practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
CCHT Practice Test 8Tutor mode
Question 1 of 10
Technical
On a cold winter morning, the RO is producing less water than usual, but its percent rejection is unchanged and the softener hardness test is negative. Feed water temperature has dropped from 77 °F (25 °C) to 50 °F (10 °C). The *most* likely explanation is that