Electrochemical corrosion can occur, only if ________________ is present in contact with metal?

Related Mcqs:

Upto the critical radius of insulation, added insulation, will____________________?

A. Increase the heat loss B. Decrease heat loss and will have no effect beyond that C. Decrease heat flux D. Reduce convection heat loss compared to conduction heat less...

Which of the following has the least value of ultimate tensile strength (UTS) ?

A. Medium carbon steel B. High carbon steel C. Cast iron D. Wrought iron...

Hydrogen in liquid steels is dissolved_________________?

A. As tiny gas bubbles B. In the atomic form C. In the ionic form D. In the molecular form...

Which of the following is not an ore of copper ?

A. Cryolite B. Azurite C. Chalcopyrite D. Malachite...

Case hardening of a material is__________________?

A. Followed by tempering or carburising B. Preceded by its tempering C. Done to get a soft ductile interior with a very hard surface D. Carried out to get extreme hardness in its core...