m m m m m m m
1. NACE 2008 Student Manual!
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START OF CHAPTER 1
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Corrosion is an electrochemical process involving
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A) flow of protons and electrons
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B) flow of neutrons and ions
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C) flow of protons and ions
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D) flow of electrons and ions
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E) flow of resistance and resistivity: d
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2. Metal loss or corrosion occurs at the
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A) cathode
B) anode
C) electronic path m
D) metallic path: b m m
3. What are the four parts of the corrosion cell
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A) anode, resistor, electrolyte, metallic path
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B) anode, cathode, electron, electronic path
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C) anode, cathode, electrolyte, metallic path: c
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4. True or False (t or f)
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1m/m100
,Ions exist only in the electrolyte?: t
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5. Electrons flow in a corrosion cell by which of the following paths?
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A) anode to cathode via electrolyte
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B) cathode to anode via electronic path
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C) anode to cathode via electronic path: c
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6. At the cathodic surface in a corrosion cell, the electrons from the
m m m m m m m m m m m mm
mmeet ions from the solution.
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A) cathode, hydrogen m
B) cathode, OH- m
C) anode, hydrogen
m
D) anode, OH-: c
m m
7. Oxidation of the metal occurs at the
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surfaces and reduction of
m m m ions occurs at the
m m m .
2m/m100
,A) anodic, hydrogen, cathodes
m m
B) cathode, OH-, anodic m m
C) anodic, OH-, cathodes m m
D) cathode, anodic, electrolyte m m
E) cathode, hydrogen, electrolyte: a
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8. True or falsem m
Is oxidation necessarily associated with oxygen?: f
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9. Current flow in a corrosion cell flows which path:
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A) anode to metallic path to cathode
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B) anode to electronic path to cathode
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C) cathode to metallic to anode m m m m
D) cathode to electrolyte to anode
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E) anode to electrolyte to cathode
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Voltage is the measure of the electrochemical difference between two elec-
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trodes
m
in an electrolyte: e
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10. m
is the measure of the electrochemical difference between twoelectr
m m m m m m m m m
odes
in an electrolyte
m m
3m/m100
, A) current
B) resistance
C) error
D) ohms
E) ohms-cm
F) voltage: f m
11. The mm
represents the reversible work to move a unit charge from the electrode
m m m m m m m m m m m m
surface
through the solution to the reference electrode
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A) current potential
m
B) electrode potential m
4m/m100