NACE 2008 Student Manual! START OF
CHAPTER 1 1.
Corrosion is an electrochemical process involving
A) flow of protons and electrons
B) flow of neutrons and ions
C) flow of protons and ions
D) flow of electrons and ions
E) flow of resistance and resistivity
D
2. Metal loss or corrosion occurs at the
A) cathode
B) anode
C) electronic path
D) metallic path
B
3. What are the four parts of the corrosion cell
A) anode, resistor, electrolyte, metallic path
B) anode, cathode, electron, electronic path
C) anode, cathode, electrolyte, metallic path
C
True or False (t or f):
Ions exist only in the
electrolyte? T
Electrons flow in a corrosion cell by which of the following paths?
A) anode to cathode via electrolyte
B) cathode to anode via electronic path
C) anode to cathode via electronic
path C
At the cathodic surface in a corrosion cell, the electrons from the
meet
ions from the solution.
A) cathode, hydrogen
B) cathode, OH-
C) anode, hydrogen
D) anode,
OH- C
Oxidation of the metal occurs at the
surfaces and reduction of ions occurs at the .
A) anodic, hydrogen, cathodes
B) cathode, OH-, anodic
C) anodic, OH-, cathodes
D) cathode, anodic, electrolyte
E) cathode, hydrogen,
,electrolyte A
,True or false
Is oxidation necessarily associated with
oxygen? F
Current flow in a corrosion cell flows which path:
A) anode to metallic path to cathode
B) anode to electronic path to cathode
C) cathode to metallic to anode
D) cathode to electrolyte to anode
E) anode to electrolyte to
cathode E
is the measure of the electrochemical difference between two
electrodes in an electrolyte
A) current
B) resistance
C) error
D) ohms
E) ohms-cm
F) voltag
eF
The
represents the reversible work to move a unit charge from the electrode
surface through the solution to the reference electrode
A) current potential
B) electrode potential
C) resistance potential
D) ohms potential
E) Faraday
potential B
Metals occur in nature in the form of various chemical compounds
referred to as
A) ores
B) anodic metals
C) cathodic metals
D) carbohydrat
es A
The amount of energy required by a metal during the
refining process determines the orof the metal.
A) current, active state
B) voltage, active state
C) active resistance, voltage
D) resistance, active state
, E) current, active resistance
CHAPTER 1 1.
Corrosion is an electrochemical process involving
A) flow of protons and electrons
B) flow of neutrons and ions
C) flow of protons and ions
D) flow of electrons and ions
E) flow of resistance and resistivity
D
2. Metal loss or corrosion occurs at the
A) cathode
B) anode
C) electronic path
D) metallic path
B
3. What are the four parts of the corrosion cell
A) anode, resistor, electrolyte, metallic path
B) anode, cathode, electron, electronic path
C) anode, cathode, electrolyte, metallic path
C
True or False (t or f):
Ions exist only in the
electrolyte? T
Electrons flow in a corrosion cell by which of the following paths?
A) anode to cathode via electrolyte
B) cathode to anode via electronic path
C) anode to cathode via electronic
path C
At the cathodic surface in a corrosion cell, the electrons from the
meet
ions from the solution.
A) cathode, hydrogen
B) cathode, OH-
C) anode, hydrogen
D) anode,
OH- C
Oxidation of the metal occurs at the
surfaces and reduction of ions occurs at the .
A) anodic, hydrogen, cathodes
B) cathode, OH-, anodic
C) anodic, OH-, cathodes
D) cathode, anodic, electrolyte
E) cathode, hydrogen,
,electrolyte A
,True or false
Is oxidation necessarily associated with
oxygen? F
Current flow in a corrosion cell flows which path:
A) anode to metallic path to cathode
B) anode to electronic path to cathode
C) cathode to metallic to anode
D) cathode to electrolyte to anode
E) anode to electrolyte to
cathode E
is the measure of the electrochemical difference between two
electrodes in an electrolyte
A) current
B) resistance
C) error
D) ohms
E) ohms-cm
F) voltag
eF
The
represents the reversible work to move a unit charge from the electrode
surface through the solution to the reference electrode
A) current potential
B) electrode potential
C) resistance potential
D) ohms potential
E) Faraday
potential B
Metals occur in nature in the form of various chemical compounds
referred to as
A) ores
B) anodic metals
C) cathodic metals
D) carbohydrat
es A
The amount of energy required by a metal during the
refining process determines the orof the metal.
A) current, active state
B) voltage, active state
C) active resistance, voltage
D) resistance, active state
, E) current, active resistance
