What are primary, secondary and tertiary alcohol? How can you obtain each of these using Grignard reagent?  

What happens when primary, secondary and tertiary alcohols are

i) oxidised with ${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$ and ${\mathrm{H}}_2{\mathrm{SO}}_4$?

ii) passed over heated copper?

How can you distinguish between primary, secondary and tertiary alcohol by oxidation method? 

Write the principle of manufacture of ethyl alcohol from starchy materials. 

How can you prepare a)methyl alcohol from ethyl alcohol b)ethyl alcohol from methyl alcohol?