First one
#2
No substituents
#3
2 CH_2 attached
#4
#5
2 methyls
First one
Three methyl bonds attached to Carbon atom
3degree Carbon so tertiary alcohol.
#2
No substituents
1 degree carbon so primary alcohol
#3
2 CH_2 attached
2degree carbon so secondary alcohol
#4
1 degree or primary alcohol
#5
2 methyls
2 degree carbon so secondary alcohol