Gold is removed from the rock that contains it by a series of leaching operations that all involve the use of
A)suluric acid
B)nitric acid
C)arsenic
D)highly toxic cyanide salts
E)mercury

Question

Quizplus · Accepted Answer

Gold is typically extracted from rock through a leaching process that involves the use of highly toxic cyanide salts. This process is known as cyanide leaching and is used in 90% of gold production worldwide. The cyanide trickles down through the ore and bonds with the gold, leaching it out of the rock.

Gold Is Removed from the Rock That Contains It by a Series