1) Choose the colour of rusty objects. a) reddish-brown b) black c) yellow 2) Choose the characteristic of rusty object a) soft surface b) rough surface c) shinning surface 3) which of the following object having brittle?  a) b) c) 4) The objects made of ______________ will rust. a) wood b) plastic c) iron 5) Choose the object that can be rust a) b) c) 6) Which of the following object can be rust? a) iron gate b) plastic straw c) glass cup 7) The rust form when the iron reacts to water and______________ . a) sugar b) oxygen  c) hidrogen 8) The key in the picture has ___________________ a) polished b) painted c) rusted 9) Rust can be prevented through________________ a) Painting b) Cooking c) Planting 10) How to prevent the bicycle chain from rusting? a) Put some water b) Greasing and oiling c) Gives some heat 

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