Question

y do compounds like alcohol an dglucose don't show acidic character even though they have H.

Answer 1

alcohol and glucose do not ionize in their aqueous state to produce H+(aq) ions I.e. hydronium ions which are responsible for acidic character. thus they do not show acidic character
hope it helpzzz u ☺️

Answer 2

Alcohols do show acidic character. Alcohols contain active H. Active hydrogens are those which attached to EN elements like N, O, F. Alcohols after releasing H+ ion forms alkoxide ion.Alcohols react with Na and liberate hydrogen. Alcohols react with acids to form esters. This is due to O-H bond breaking of alcohol and C-O bond of carboxylic acid.