Alcohols on treatment with various reagents give corresponding alkyl halides as products. Alcohols on treatment with HCl + ZnCl₂ give alkyl chlorides and so does red phosphorous and bromine treated with alcohol give alkyl bromide. H₂SO₄ and KI cannot be used for converting an alcohol to alkyl iodide as this converts KI to corresponding acid, HI which is then oxidised by it to I₂. Hence the correct statements are (i) and (ii).