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what is meant by rusting of iron with the help of diagram describe activity to find out the condition under which iron rust

Posted by Satyajeet Kamble 3 years, 3 months ago

CBSE > Class 10 > Science

1 answers

Anshita Goyal 3 years, 3 months ago

The process in which iron reacts with oxygen in the presence of moisture to form reddish brown coating of hydrated ferric oxide [Iron (III) oxide].Fe2O3 xH2O Activity: (i) Take three boiling tubes A, B and C. (ii) Pour some water in test tube A Put iron nails in it and cork it. (iii) Pour boiled distilled water in another test tube B and put iron nails in it. Add 1 ml of ojl over it such that oil flo’ats over it and prevents the air from entering. (iv) Take some iron nails in test tube C and put some anhydrous calcium chloride in it and cork it . (v) Leave all the three test tubes for one day and then observe. Observation: Iron nails get rusted in test tube A because both air and water are present in it. Iron nails do not get rusted in B because there is water but no air. In C, rusting will not take place because there is neither air nor water. Conclusion: Iron gets rusted in the presence of air and water

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