Energy – Short Answer DOE researchers are studying the conducting properties of nanowires made
of a metal oxide that is also commonly used for the industrial production of sulfuric acid. What is the name
of this metal oxide?
ANSWER: VANADIUM PENTOXIDE (ACCEPT: V2O5, VANADIA, VANADIUM (V) OXIDE)

They have a given a hint that metal oxide used in the manufacturing of sulfuric acid.
Sulfuric acid is manufactured on large scale by contact process in which V2O5 ( Vanadium pentoxide or  vanadium (V) oxide is used.
Contact process