Which alcohol is it?

You will write three functions that predict what an alcohol does in three tests. The class of the alcohol is 1, 2 or 3 for primary, secondary or tertiary.

The idea. The Lucas reagent is quick with a tertiary alcohol and slow with a primary one. An oxidising agent takes hydrogen from the OH carbon, so a tertiary alcohol, which has none, does not react. Orange dichromate turns green when it oxidises an alcohol.

Your tasks.

1. Complete lucas(kind) so that it returns "at once" for class 3, "in about 5 minutes" for class 2 and "clear" for class 1.
2. Complete oxidation_product(kind, strong) so that it returns "aldehyde" or "carboxylic acid" for class 1 (acid when strong is True), "ketone" for class 2 and "none" for class 3.
3. Complete turns_green(kind) so that it returns True when the dichromate changes colour.