Which of the following is function of fluoride flux in soldering process ?

Related Mcqs:

All of the following statements about cast cobalt alloy are true EXCEPT_____________?

A. They have a modulus of elasticity twice that of gold alloys B. They are more rigid than gold alloys C. They have higher ductility than gold alloys D. They have a lower proportional limit than gold alloys...

Softening heat treatment of alloy increases_________________?

A. Tensile strength B. Proportional limit C. Ductility D. Hardness...

Which of the following increases castability of base metal alloys________________?

A. Tin B. Beryllium C. Molybdenum D. Carbon...

Air bubbles formed on the surface of casting is probably due to________________?

A. Improper casting pressure B. Improper heating of the investment C. Improper angulation of sprue D. Improper wetting of the wax pattern by the investment...

The main form of iron carbide found in 18-8 steel________________?

A. Martensite B. Ferrite C. Austenite D. Pearlite...