NACE CP1 EXAM Latest 2026 | Questions with 100% Correct Answers Complete | Updated 2026 / 2027 Verified by Experts

NACE CP1 ACTUAL EXAM
QUESTIONS AND ANSWERS

1. Q4 - Neutrons
A) Are positively charged particles in the nucleus
B) Are neutral particles in the nucleus
C) Are electrically charged atoms
D) Consist of a nucleus and orbiting electrons, the number of
protons equals the number of negatively charged electrons
E)Are ions formed by the gaining of electrons and is negatively
charged because the number of electrons is greater than the number
of protons
ANS B) Are neutral particles in the nucleus


2. Q51 - 1,000 amperes =


A) 1 kiloampere
B) 100 milliamperes
C) 1 millampere
D) 10 milliamperes
E)1 microampere
ANS 1,000 Amperes =
A) 1 KILOAMPERE


,3. Q1 - Corrosion
A) Is defined by Nace International as the deterioration of a material,
usually a metal that results from a reaction with its environment
B) Is produced when acids dissociate, when cation takes places
C) Is the division of chemistry that deals with the transfer of
electric charge in chemical reactions
D) Involves the movement of electrons anode to cathode for
the reduction reaction to occur
E)Is equal to the reciprocal of resistivity
ANS A) IS DIFINED BY NACE INETERNATINAL AS THE DETERORA- TION OF A MATERIAL
USUALLY A METAL THAT RESULTS FROM A REACTION WITH ITS ENVIORMENT


4. Q 101 - Code for corrosion control of underground storage tank
systems by cathodic protection

A) RP0285
B) SP0169

C) SP0176
D) SP0290
E)SP0388
ANS A) RP0285


5. Q2 - Atoms



,A) Are positively charged particles in the nucleus
B) Are neutral particles in the nucleus
C) Are electrically charged atoms
D) Consist of a nucleus and orbiting electrons, the number of
protons equals the number of negatively charged electrons
E)Are ions formed by the gaining of electrons and is negatively
charged because the number of electrons is greater than the number
of protons
ANS D) CONSIST OF A NUCLEUS AND ORBITING ELECTRONS, THE NUMBER OF PROTONS EQUALS
THE NUMBER OF NEGATIVLY CHARGED ELECTRONS


6. Q 102 - SP0169


A) -850MV WITH CP APPLIED IN RESPECT TO CSE
-NEGATIVE POLARIZED OF AT LEAST 850mv TO CSE (INSTANT OFF)
B) -750MV WITH P APPLIED IN RESPECT TO CSE
-NEGATIVE POLORIZED POTENTIAL OF AT LEAST 750MV TO CSE (INSTANT OFF)
C) -850MV WOTH CP APPLIED IN RESPECT TO CSE
-NEGATIVE POLARIZED POTENTIAL PF AT LEAST 1200 MV TO CSE (INSTANT OFF)
-MINIMUM OF 100 MV OF CATHODIC POLARIZATION
ANS A) -850MV WITH CP APPLIED IN RESPECT TO CSE
-NEGATIVE POLARIZED OF AT LEAST 850mv TO CSE (INSTANT OFF)


7. Q3 - Protons


, A) Are positively charged particles in the nucleus
B) Are neutral particles in the nucleus
C) Are electrically charged atoms
D) Consist of a nucleus and orbiting electrons, the number of
protons equals the number of negatively charged electrons
E)Are ions formed by the gaining of electrons and is negatively
charged

because the number of electrons is greater than the number of protons
ANS A) Are positively charged particles in the nucleus


8. Q6 - Anions
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) Are metals that corrode under low and high pH levels
C) Are ions formed by the gaining of electrons and is negatively
charged because the number of electrons is greater than the
number of protons
D) Accelerate corrosion of metal pipe in clay environments
E)Is an excess of OH-
ANS C) Are ions formed by the gaining of electrons and is negatively charged because the
number of electrons is greater than the number of protons


9. Q 103 - CORROSION CONTROL OF STEEL FIXED OFFSHORE PLATFORMS