Q15 of 400 Page 191

State two conditions for the rusting of iron.

The two conditions for the rusting of iron are:-

1) Presence of air (oxygen),


2) Presence of water (or moisture).



More from this chapter

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13 How many carats is pure gold? Why is pure gold not suitable for making ornaments? 14 Name one method for the refining of metals. 16 In one method of rust prevention, the iron is not coated with anything. Which is this method? 17 Name two alloys of iron. What elements are present in these alloys?