Draw the structure and name the product formed if the following alcohols are oxidized. Assume an excess

Question:

Draw the structure and name the product formed if the following alcohols are oxidized. Assume an excess of the oxidizing agent is used. If the alcohol is not expected to react with a chemical oxidizing agent, write NR (no reaction).
(a) CH₃CH₂CH₂CH₂OH
(b) 2-butanol
(c) 2-methyl-2-propanol
(d) 2-methyl-1-propanol