Bissoy.com
Doctors Medicines MCQs Q&A

Which of the following is/are the types of mass transfer due to liquid-metal corrosion?

Which of the following is/are the types of mass transfer due to liquid-metal corrosion? Correct Answer Both composition and thermal gradient mass transfer

Types of mass transfer due to liquid-metal corrosion are: i. Composition-gradient mass transfer ii. Thermal-gradient mass transfer.

Related Questions

What is the monoisotopic and average mass of valine? Given data: Mass of the most abundant isotope of Carbon (C°)=12.0000, Mass of most abundant isotope of Hydrogen (H°)=1.0078, Mass of most abundant isotope of Oxygen (O°)=15.9949, Mass of most abundant isotope of Nitrogen (N°)=14.0031, The average mass of Carbon (C)=12.011, The average mass of Hydrogen (H)=1.008, The average mass of Oxygen (O)=15.999, The average mass of Nitrogen (N)=14.007.
A stream of air at 100 kPa pressure and 300 K is flowing on the top surface of a thin flat sheet of solid naphthalene of length 0.2 m with a velocity of 20 m/sec. The other data are: Mass diffusivity of naphthalene vapor in air = 6 * 10 –6 m2/sec Kinematic viscosity of air = 1.5 * 10 –5 m2.sc Concentration of naphthalene at the air-solid naphthalene interface = 1 * 10 – 5 kmol/m3 Calculate the overage mass transfer coefficient over the flat plate. Note: For heat transfer over a flat plate, convective heat transfer coefficient for laminar flow can be calculated by the equation. Nu = 0.664 ReL1/2 Pr1/3 you may use analogy between mass and heat transfer.
Corrosion of less corrosion-resistant metal is usually increased and the attack of the more corrosion-resistant is decreased in galvanic corrosion.
Statement 1: Penetration theory states that mass transfer coefficient is directly proportional to diffusivity coefficient which was later proved wrong. Statement 2: Penetration theory states that mass transfer is based on unsteady mass transfer.
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All Matter is Space. Some Mass is Matter. Conclusions: A. All Mass is Space. B. Some Mass is Space. C. Some Space is Mass. D. All Space is Mass. E. All Matter is Mass.
Consider a reinforcing bar embedded in concrete. In a marine environment this bar undergoes uniform corrosion, which leads to the deposition of corrosion products on its surface and an increase in the apparent volume of the bar. This subjects the surrounding concrete to expansive pressure. As a result, corrosion induced cracks appear at the surface of concrete. Which of the following statements is TRUE?
Consider the following statements regarding corrosion of ceramic material: 1. Ceramic materials are much better suited to withstand most of these environments for reasonable time periods than are metals. 2. Corrosion of ceramic materials generally involves simple chemical dissolution, in contrast to the electrochemical processes found in metals. 3. Ceramic materials are not frequently used because of their non-resistance to corrosion. Which of the above statements is/are correct?
Which of the following corrosion form is considered as the intermediate stage between uniform corrosion and complete corrosion resistance?
Under which of the following condition(s) are the occluded fronts created? 1. When the front remains stationary 2. When cold air mass moves to warm air mass 3. When warm air mass moves to cold air mass 4. When an air mass is fully lifted above the land surface Select the correct answer using the code given below :
Which protection method is depicted in then given figure?
Electrometallurgy and Corrosion mcq question image