An alcohol has the molecular formula C₃H₈O. When warmed with an alkaline solution of iodine it forms a yellow precipitate.

a. Name the yellow precipitate.

b. Draw the displayed formula of the alcohol.

c. The first stage in the reaction of the alcohol with alkaline iodine solution is an oxidation reaction. Name the organic product of this first stage.

d. There are four isomeric alcohols with the formula C₄H₉OH.

i. Name the four isomeric alcohols.

ii. Classify each one as a primary, secondary or tertiary alcohol.

iii. Which of the four isomeric alcohols will give a yellow precipitate when warmed with an alkaline solution of iodine?