The number of teritary carbon atoms in tertiary butyl alcohol is

t-Butyl alcohol [tertiary butyl alcohol]→A carbon inturn connecting to the 3-other carbons is called 3o -carbon.→An alcohol in which "OH" group is attached to 3o-carbon is said to be 3o - alcohol.→An alcohol in which OH group is attached to the 3o-butyl group is said to be 3o-butyl alcohol.