Question 1

Which of the following is not a component of the plumbing drainage system?

Accepted Answer

A) water closets 
B) taps 
C) vent pipes 
D) urinals

Question 2

What happens when water contains 8-20 ppm of fluoride concentration?

Accepted Answer

A) blue baby disease 
B) crippling fluorosis 
C) dental fluorosis 
D) mottling of teeth

Question 3

The hourly demand rate is constant throughout the day.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following is not a component of plumbing water supply system?

Accepted Answer

A) washbasin 
B) water supply and distribution pipes 
C) valves 
D) storage tanks

Question 5

Which of the following is not used for defluoridation?

Accepted Answer

A) calcium phosphate 
B) copper sulfate 
C) alum 
D) bone charcoal

Exam 7: Water Treatment and Plumbing Systems

Which of the following is not a component of the plumbing drainage system?