1-You know KMnO4 is a oxideizing agent.but tert-butyl alcohol don't oxidize because it is a tertiary alcohol.
2-with any acid,this alcohol will protonate and occur tert-butyl hidroksonium cation.
3-Alcohols react with carboxcylic acids to give esters.İn this reaction a H2O molecules leave and this is a condensation reaction.
4-Alcohols react with Na to give H2(g) and Sodium tert-butoxide.
I hope ı am not wrong.You can find more details in any organic chemistry book.