Question

the most common problem with plumbing fixtures is
poor pressure
poor flow
inoperative isolating valves
hot and cold faucets reversed
leaks
question 9
rust on fixtures is typically caused by all of the following except
loss of a protective surface
failure at welded overflow connections
corrosive chemicals
chipped enamel
condensate from air conditioners draining into fixtures

Explanation:

Plumbing fixtures often face leakage issues due to wear - and - tear, improper installation etc. For rust, a loss of protective surface like chipped enamel exposes metal to elements, corrosive chemicals can cause rust, and condensate from ACs can also contribute. Welded overflow connection failure is not typically a cause of rust on fixtures.

Answer:

1. E. leaks
2. B. failure at welded overflow connections