[" 4.4.What materactive sendothermic inboththecases (D) All the steps are exothermic in both case "],[" The reaction of propene with HOCl proceeds via the addition of - "],[[" (A) H' in first step "," (B) Cl' in first step "],[" (C) OH- in first step "," (D) "Cl^(*)" and "OH^(-)" in single step "]]