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Worksheets5.1 Redox: Rusting
Total questions: 10
Worksheet time: 21mins
What element rusts?
carbon
manganese
iron
potassium
What is the chemical name given to Rust ?
hydrated iron(I) oxide
Iron (I) oxide
iron(II) hydroxide
hydrated iron(III) oxide
Which of the following does not prevent rusting of iron?
Painting , Oiling , Galvinising
Attach to a piece of copper
connect to a piece of magnesium with wire
cover entirely with copper
In which tube will the nail go rusty?
The nail in tube A will go rusty.
The nail in tube B will go rusty.
The nail in tube C will go rusty.
What metal from the list below does not corrode ?
Iron
Steel
Gold
Magnesium
The diagram shows mechanism of rust formation.
Choose the correct statement:
an iron atom release two electrons to form an iron(II) ion
an iron(II) ion receives two electron from an iron atom
an oxygen molecules receives two electrons to form hydroxide ion
four hydroxide ions are formed when two water molecules receive four electrons
During rusting, the iron block also works as a voltaic cell.
Which of the following statements explain this
there is water present
metal iron is present
iron atom loses electrons to oxygen and water
iron block is corroded when in contact with oxygen and water
Diagram shows a voltaic cell on the iron block during rusting.
which of the following reaction occurs at cathode?
Fe --> Fe2+ + 2e
Fe2+ + 2e --> Fe
O2 + 2H2O + 4e --> 4OH-
4OH- --> O2 + 2H2O + 4e
Which of the test tube(s) in Diagram will iron nail rust?
X only
Y only
X and Z only
Y and Z only
Which metal container causes the iron nail to corrode fastest?
Magnesium
Silver
Lead
Tin
