Consider the following reactions. Primary alcohol is not the product in

(1)…Hydro boration oxidation….Anti markonikov's addition of water….butan-1-ol(primary);(2)…RMgX with HCHO followed by hydrolysis…always primary alcohol….ethanol;(3)…Acidic hydration…Markonikov's addition of water…2-methyl-propan-2-ol(tertiary);(4)…RCHO on catalytic reduction…always primary alcohol….2-methyl-propan-1-ol ;