Which of the following easily catalyse the decomposition of H_(2)O_(2) when stored ? (i) Rough surface (ii) Sunlight (iii) Dust particles (iv) Metals

Which of the following easily catalyse the decomposition of H_(2)O_(2)

1.	Which of the following easily catalyse the decomposition of H_(2)O_(2) when stored ? (i) Rough surface (ii) Sunlight (iii) Dust particles (iv) Metals
Answer» (i) and (II) (i),(ii) and (III) (ii) and (iv) All of these. Solution :DECOMPOSITION of `H_(2)O_(2)` is catalysed by metals, rough SURFACES, sunlight, dust particles, glass and alkalies.