Which of the following materials are usually used for Electrolysis?

Mechanical Engineering : Engineering Materials - Quiz(MCQ)

Zinc, cadmium

Silver, tin

Aluminum, nickel

Silicon, antimony

Correct Answer : Option (B) : Silver, tin

Explanation : Since atomization results in oxidation of molten metal as it comes in contact with air, it is only used for materials like zinc and cadmium. Electrolysis is a standard electrolytic process which is used for materials like silver and tin. It is advantageous as it produces oxidation resistant powders.

Recently Updated in Engineering Materials Questions

Babbit metal contains

92% tin, 6% copper and 2% antimony

88% tin, 4% copper and 8% antimony

66% tin, 30% copper and 4% antimony

50% tin and 50% antimony

Correct Answer : 88% tin, 4% copper and 8% antimony

What is the result of full annealing of hypoeutectoid steels?

Bainite

Silicon

Cementite

Coarse pearlite

Correct Answer : Coarse pearlite

Explanation : Hypoeutectoid steels are heated above the A3 line and then cooled in the furnace. Then it removed from the furnace and then cooled at room temperature. This results in coarse pearlite with excess ferrite.

A fine grained steel

is less tough and has a less tendency to distort during heat treatment

is less tough and has a greater tendency to distort during heat treatment

is more ductile and has a less tendency to distort during heat treatment

is more ductile and has a greater tendency to distort during heat treatment

Correct Answer : is more ductile and has a less tendency to distort during heat treatment