Related InterviewSolutions

• Which of the following is/are the advantages of Tafel extrapolation?(a) It can measure extremely low corrosion rates(b) It can be used for continuously monitoring the corrosion rate of a system(c) It can be used for continuously monitoring the corrosion rate of a system with high accuracy and measures extremely low corrosion rates(d) It can be performed rapidly with high accuracyThis question was posed to me during an interview for a job.I need to ask this question from Modern Theory Applications in section Modern Theory Applications of Corrosion Engineering
• The corrosion rate is usually dependent at low velocity whereas at high velocities it becomes independent.(a) True(b) FalseThe question was posed to me in final exam.I need to ask this question from Modern Theory Applications in chapter Modern Theory Applications of Corrosion Engineering
• Severe corrosion of metals occurred when coupled with platinum is due to the higher current density for hydrogen evolution but not due to the reversible potential of the platinum-platinum ion electrode.(a) True(b) FalseI have been asked this question in an international level competition.Enquiry is from Modern Theory Applications topic in chapter Modern Theory Applications of Corrosion Engineering
• Which of the following is/are correct when oxidizing agents are added to a corrosion system containing a non-passivating metal?(a) Rate of corrosion decreases after certain potential(b) Rate of corrosion increases with increase in oxidizers concentration(c) Rate of corrosion increases after certain potential(d) Results in the formation stable oxide layerI had been asked this question in an online interview.My question comes from Modern Theory Applications topic in division Modern Theory Applications of Corrosion Engineering
• Which of the following is/are the limitations of Tafel extrapolation?(a) For reasonable accuracy, the Tafel region must be extended(b) It can be applied to systems containing one reduction process only(c) Much interference from concentration polarization(d) It can be applied to systems containing one reduction process, for reasonable accuracy the Tafel region must be extended and there will be much interference from concentration polarizationThis question was addressed to me in my homework.Query is from Modern Theory Applications topic in division Modern Theory Applications of Corrosion Engineering
• Which of the following is/are correct regarding the potentiostat method?(a) It is a polarization technique that allows for controlled polarization(b) It works on controlling voltage between a working and reference electrode(c) It is a corrosion analysis method(d) It is a corrosion analysis technique method that allows for controlled polarization and it works on controlling voltage between a working and reference electrode.I had been asked this question in a national level competition.My enquiry is from Modern Theory Applications topic in division Modern Theory Applications of Corrosion Engineering
• Which of the following industries uses Tafel extrapolation or linear polarization to measure low corrosion rates?(a) Nuclear industries(b) Pharmaceutical industries(c) Food processing industries(d) Nuclear, pharmaceutical and food processing industriesThe question was asked in a job interview.This interesting question is from Modern Theory Applications topic in division Modern Theory Applications of Corrosion Engineering
• Which of the following noble metals will improve the corrosion resistance of titanium and chromium on galvanic coupling?(a) Platinum(b) Palladium(c) Rhodium(d) Platinum, palladium, and rhodiumThe question was posed to me in final exam.The above asked question is from Modern Theory Applications topic in portion Modern Theory Applications of Corrosion Engineering
• The applied current cathodic polarization curve of a corroding metal is non-linear at low currents, but it becomes linear at higher currents on a semilogarithmic plot.(a) False(b) TrueI have been asked this question in examination.The query is from Modern Theory Applications topic in chapter Modern Theory Applications of Corrosion Engineering
• The reversible potential of gold is more positive than platinum in emf series whereas in galvanic series the position of gold is below platinum.(a) False(b) TrueThis question was posed to me in an interview for internship.Enquiry is from Modern Theory Applications in portion Modern Theory Applications of Corrosion Engineering