question_answer

When \[KCl{{O}_{3}}\] is heated, it decomposes into \[KCl+{{O}_{2}}\]. If some \[Mn{{O}_{2}}\] is added, the reaction goes much faster because [CPMT 1971,76,80,94]

A)                 \[Mn{{O}_{2}}\] decomposes to give \[{{O}_{2}}\]

B)                 \[Mn{{O}_{2}}\] provides heat by reacting

C)                 Better contact is provided by \[Mn{{O}_{2}}\]

D)                 \[Mn{{O}_{2}}\] acts as a catalyst