Question

Activity 3.14 for class 10science

Answer 1

Olá User.
Here's ur answer.

⭐ACTIVITY : 3.14⭐

◼ AIM : To show that rusting of iron in the presence of air and water.

◼PROCEDURE :

⭐ Take three test tubes and label them A, B and C.
⭐ Place lean iron nails in each of them.
⭐ Pour some ordinary water in the test tube marked A and cork it.
⭐ Pour some boiled distilled water in test tube B .Put a layer of about 1 cm thick of oil over it .Layer of oil will prevent air to dissolve in water.
⭐ Put some "Anhydrous Calcium Chloride" in test tube C and cork it . "Anhydrous Calcium Chloride" will absorb whatever moisture is present in the test tube.
Leave the test tubes for a few days and then observe.

◼ OBSERVATION : Iron nails rust in test tube A only and do not rust in test tubes B and C.

◼ CONCLUSION : In test tube A, nails are exposed to moisture, that is why rust is formed but not in test tubes B and C due to protective layers of oil and anhydrous calcium chloride.

HOPE IT HELPS!!
@CHARLIE16.

Answer 2

Answer:this is how iron rusts!

I hope it helps you

Observation: Iron nails rusts in test tube A only and do not rust in test tube B and C Because in test tube A, nails are exposed in moisture, that is why rust is formed but not in test tubes B and C due to protecting layers of oil and anhydrous calcium chloride

Explanation: