Question

what is galvanic action?
corrosion that occurs when two dissimilar metals touch
connecting abs/pvc and piping together in a plumbing system
a gurgling noise in the drain system
a failure mode peculiar to brass piping
blistering of finishes on synthetic marble fixtures
question 40
any brass supply piping you come across will be
¾ inch diameter
yellow brass with many years of service left
prone to failure at the horizontal soldered connections
red brass with many years of service left
near the end of its life

Explanation:

Galvanic action is a type of corrosion that happens when two different metals are in contact in the presence of an electrolyte. The other options describe unrelated plumbing - related phenomena. For the second question, brass supply piping can have issues at horizontal soldered connections due to stress and other factors.

Answer:

First question: corrosion that occurs when two dissimilar metals touch
Second question: prone to failure at the horizontal soldered connections