(i) Ethyl magnesium chloride → Propan-1-ol.
(ii) Methyl magnesium bromide → 2-Methylpropan-2-ol.

(i) When ethyl magnesium chloride reacts with methane, an adduct is formed, resulting in propan–1–ol on hydrolysis.

(ii) When methyl magnesium bromide is combined with propane, an adduct is formed, which when hydrolyzed yields 2–methylpropane–2-ol.