HCl, HNO3, etc., ionise in the aqueous solution to produce H+ ions. Hence, they show acidic character. Compounds like C2H5OH and glucose do not ionise in the aqueous solution to give H+ ions, i.e., hydrogen present in them is non-ionisable. Hence, they do not show acidic character.
In acidic medium alcohols protonated then loses H2O to form a carbo cation. If HCl Cl- strong nucleophile cause nucleophilic substitution, HNO3 causes oxidation.
(d) : Vapour density = (Molecular weight)/2
As both the compounds have same molecular weights, both will have the same vapour density. Hence, gaseous density of both ethanol and dimethyl ether...