Boiling point by distillation or a specific enzyme

if ur chemicals are pure, you can use the boiling points....even you can depend on their characteristic smell but not a scientific way to use it always since it is against GLP.

1H or 13C NMR. Simple and rapid (also expensive).

Yes, using lucas reagent. Since the difference between the two alcohols are their degrees, ethanol is primary while isopropanol is a secondary alcohol.

If you have a refractometer you could measure the refraction index of both, thats fast, easy and cheap.

Victor meyer test, time test, oxidationtest

thanks all for your helpful answers ......... I need this test for the undergraduate students in the lab so I need a simple and rapid test ......... I think Lucas test could help me ........ thanks again

If you perform the oxidation reaction with these alcohols (ethanol and isopropanol) then you get the acetaldehyde and acetone respectively and then proceed for characteriztion.