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NACE (NATIONAL ASSOCIATION OF CORROSION ENGINEERS) CP1 EXAM - DO TESTS WITH CORRECT ANSWERS
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NACE (NATIONAL ASSOCIATION OF CORROSION ENGINEERS) CP1 EXAM - DO TESTS WITH CORRECT ANSWERS
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NACE (NATIONAL ASSOCIATION OFCORROSION ENGINEERS) CP1 EXAM - DO
TESTS WITH CORRECT ANSWERS
PART OF WRITTEN EXAMINATION:
Cation
A) are composed of two or more atoms, molecules are the
smallest unit of a substance with the same specific chemical
properties of that substance
B) loss of electrons yielding a positively charged ion
C) is the negative logarithm to the base 10 of the hydrogen ion
concentration or
pH = -log[H+]
D) are metals that corrode under low and high pH levels
E) is an ionized solution capable of conducting electricity. Correct
Answer b
Molecules
A) is produced when acids dissociate , when cation takes place
B) is the term applied to the loss of one or more electrons from an
atom or molecule, which forms a positively charged ion, the atom
or molecule decreases in negative charge (occurs at the anode)
C) are composed of two or more atoms, molecules are the
smallest unit of a substance with the same specific chemical
properties of that substance
D) is the deviation from the open circuit potential of an electrode
resulting from the passage of current
E) consist of a nucleus and orbiting electrons, the number of
protons equals the number of negatively charged electrons
Correct Answer c
,Chemical bonding
A) is the force that holds atoms of molecules together
B) is the division of chemistry that deals with the transfer of
electric charge in chemical reactions
C) is the gain of one or more electrons to an atom or molecule,
which then forms a negatively charged ion or neutral element
(occurs at the cathode)
D) are particles that carry a negative charge
E) the ratio of metal consumed producing useful cathodic
protection current to the total metal consumed Correct Answer a
Hydrogen ion H+
A)is the force that holds atoms of molecules together
B) are ions formed by the gaining of electrons and is negatively
charged because the number of electrons is greater than the
number of protons
C) is produced when acids dissociate , when cation takes place
D) is an excess of H+ ions
E) is an excess of OH- Correct Answer c
Acidic
A) is an excess of OH-
B) is an excess of H+ ions
C) when alkali dissociate, anion
D) is the division of chemistry that deals with the transfer of
electric charge in chemical reactions
E) loss of electrons yielding a positively charged ion Correct
Answer b
pH
A) when alkali dissociate, anion
,B) is an excess of OH-
C) is the term applied to the loss of one or more electrons from an
atom or molecule, which forms a positively charged ion, the atom
or molecule decreases in negative charge (occurs at the anode)
D) is an ionized solution capable of conducting electricity.
E) is the negative logarithm to the base 10 of the hydrogen ion
concentration or
pH = -log[H+] Correct Answer e
Hydroxyl ion OH-
A) when alkali dissociate, anion
B) is an excess of OH-
C) is the term applied to the loss of one or more electrons from an
atom or molecule, which forms a positively charged ion, the atom
or molecule decreases in negative charge (occurs at the anode)
D) is an ionized solution capable of conducting electricity.
E) is the negative logarithm to the base 10 of the hydrogen ion
concentration or
pH = -log[H+] Correct Answer a
Alkaline
A) when alkali dissociate, anion
B) is an excess of H+
C) is the term applied to the loss of one or more electrons from an
atom or molecule, which forms a positively charged ion, the atom
or molecule decreases in negative charge (occurs at the anode)
D) is an ionized solution capable of conducting electricity.
E) is an excess of OH- Correct Answer e
Amphoteric
, A) is the term applied to the loss of one or more electrons from an
atom or molecule, which forms a positively charged ion, the atom
or molecule decreases in negative charge (occurs at the anode)
B) is the gain of one or more electrons to an atom or molecule,
which then forms a negatively charged ion or neutral element
(occurs at the cathode)
C) are metals that corrode under low and high pH levels
D) is the division of chemistry that deals with the transfer of
electric charge in chemical reactions
E) is the deviation from the open circuit potential of an electrode
resulting from the passage of current Correct Answer c
The pH of the environment around the cathode (the protected
structure)
A) becomes more alkaline due to the production of hydroxyl ions
or removal of hydrogen ions during cathodic protection
B) is the deviation from the open circuit potential of an electrode
resulting from the passage of current
C) electrochemic
D) is an ionized solution capable of conducting electricity.
E) is the negative logarithm to the base 10 of the hydrogen ion
concentration or
pH = -log[H+] Correct Answer a
Electrochemistry
A) Is the term applied to the study of atom or molecular structures
B) is the gaining of one or more electrons
C) involves the movement of electrons anode to cathode for the
reduction reaction to occur
D) is the division of chemistry that deals with the transfer of
electric charge in chemical reactions
E) None of the above Correct Answer d
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