CBJ Metal Properties and Alloys

Question 1

What karat value represents pure gold?

Accepted Answer

24K

Answer

10K

Answer

14K

Answer

18K

Question 2

Which precious metal used in jewelry has the highest melting point?

Accepted Answer

Platinum

Answer

Gold

Answer

Silver

Answer

Palladium

Question 3

What percentage of silver does sterling silver contain?

Accepted Answer

92.5%

Answer

75%

Answer

95%

Answer

99.9%

Question 4

What property describes a metal's ability to be drawn into wire without breaking?

Accepted Answer

Ductility

Answer

Malleability

Answer

Hardness

Answer

Brittleness

Question 5

Which alloying metal primarily gives yellow gold its hardness and warm color?

Accepted Answer

Copper

Answer

Silver

Answer

Zinc

Answer

Nickel

Question 6

Which gold alloy exhibits a greenish hue due to a high silver content?

Accepted Answer

Green gold (electrum)

Answer

Rose gold

Answer

White gold

Answer

Yellow gold