Describe an activity to show that the rusting of iron occurs in the presence of air and moisture.

Describe an activity to show that the rusting of iron occurs in the pr

1.	Describe an activity to show that the rusting of iron occurs in the presence of air and moisture.
Answer» Solution :(i) Take three test-tubes. Place clean iron nails ineach test-tube. (ii) Pour some water in test-tube -1, cork it. (iii) Pour water (boiled/distilled) in test-tube-2, add some oil and cork it. (iv) Put some anhydrous calcium chloride in test-tube-3 and cork it. (v) After 2-3 DAYS, we OBSERVE that the nails in test-tube 1 trust because they are exposed to air and water both, while NAIL in test-tube 2 and 3 do not rust. This shows that RUSTING of iron TAKES place in the presence of air and moisture both.