Q1:-(A) Choose(5) the correct answer:- 1- Rusting " applies to the corrosion of (iron or iron – base) the formula is approximately: (a) Fe3O4 2- The corrosion occurs of most metals because of (b) FezO3 (C) Fe (OH)2 (d) Fe;O4 Fe203•xH2O (a) natural of martial 3-which of the following is an incorrect statement (a) corrosion is a spontaneous process (c) corrosion is an irreversible process (b)out condition (c) return to their natural state (d) both of them (b) corrosion is non-spontaneous process (d) corrosion is degradation process 4- Dezincification is forms of corrosion: (a) Uniform Corrosion (b) Crevice Corrosion 5- Polarization is occur because of (c) Intergranular Corrosion (d) Selective Leaching (a) change of potential from a stabilized state (c) n= Ei- E° 6-In concentration cells ( a) the metal is in contact with two half cells having the same electrolyte but at different concentrations (b) the metal is in contact with two half cells, having the same electrolytes with the same concentration (c) no liquid junction is present (d) there is no migration of ions from one electrolyte to another electrolyte. (b) as result of the passage of current (d) both of them
Q1:-(A) Choose(5) the correct answer:- 1- Rusting " applies to the corrosion of (iron or iron – base) the formula is approximately: (a) Fe3O4 2- The corrosion occurs of most metals because of (b) FezO3 (C) Fe (OH)2 (d) Fe;O4 Fe203•xH2O (a) natural of martial 3-which of the following is an incorrect statement (a) corrosion is a spontaneous process (c) corrosion is an irreversible process (b)out condition (c) return to their natural state (d) both of them (b) corrosion is non-spontaneous process (d) corrosion is degradation process 4- Dezincification is forms of corrosion: (a) Uniform Corrosion (b) Crevice Corrosion 5- Polarization is occur because of (c) Intergranular Corrosion (d) Selective Leaching (a) change of potential from a stabilized state (c) n= Ei- E° 6-In concentration cells ( a) the metal is in contact with two half cells having the same electrolyte but at different concentrations (b) the metal is in contact with two half cells, having the same electrolytes with the same concentration (c) no liquid junction is present (d) there is no migration of ions from one electrolyte to another electrolyte. (b) as result of the passage of current (d) both of them
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:Q1:-(A) Choose(5) the correct answer:-
1- Rusting " applies to the corrosion of (iron or iron – base) the formula is approximately:
(a) Fe3O4
2- The corrosion occurs of most metals because of
(b) Fe2O3
(C) Fe (OH)2
(d) Fe3O4 Fe203•xH2O
(a) natural of martial
3-which of the following is an incorrect statement
(a) corrosion is a spontaneous process
(c) corrosion is an irreversible process
(b)out condition
(c) return to their natural state
(d) both of them
(b) corrosion is non-spontaneous process
(d) corrosion is degradation process
4- Dezincification is forms of corrosion:
(a) Uniform Corrosion (b) Crevice Corrosion
5- Polarization is occur because of
(c) Intergranular Corrosion (d) Selective Leaching
(a) change of potential from a stabilized state
(c) n= Ei- E°
6-In concentration cells
(a) the metal is in contact with two half cells having the same electrolyte but at different concentrations
(b) the metal is in contact with two half cells, having the same electrolytes with the same concentration
(c) no liquid junction is present
(d) there is no migration of ions from one electrolyte to another electrolyte.
(b) as result of the passage of current
(d) both of them
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