Misc: What is the capital of the state of Ohio?

Questions

Toxiphobia is a fear of _________?

Treatment of disease & correction of deformity or defect by manual & operative procedures, with or without the use of drugs?

Treatment of disease by various approaches?

Triassic, jurassic, & cretaceous are three periods during which era?

Triple star system, also called rigil kent, in the constellation Centaurus?