1) Which of the following will result in rusting? a) Test tube containing boiled distilled water b) Test tube containing sodium chloride solution c) Test tube containing anhydrous calcium chloride  2) Which of the following(s) will prevent rusting? a) Coating with copper b) Coating with zinc c) Coating with grease d) Adding sodium chloride solution e) Galvanizing 3) What is the function of calcium chloride? a) Act as a barrier to prevent water and oxygen from coming in contact with iron b) Acts as a drying agent to absorb water vapour c) Act as a catalyst to speed up rusting d) To prevent oxygen from dissolving 4) Which of the following metal can rust? a) Iron b) Zinc c) Magnesium d) Copper e) Lead 5) How does sacrificial protection prevents rusting? Choose 2. a) A more reactive metal will rust in place of iron. b) A more reactive metal will corrode in place of iron c) The reactive metal acts as a barrier preventing iron from coming in contact with water and oxygen 

Rusting

door
Afdrukken
Embedden

Scorebord

Visuele stijl

Opties

Template wisselen

Automatisch opgeslagen activiteit "" herstellen?