Ques : Which toxic element is used in the process of extracting gold from its ore?
A. Lithium
B. Helium
C. Mercury
D. Magnesium
Ans : C. Mercury
Ques : Which toxic element is used in the process of extracting gold from its ore?
A. Lithium
B. Helium
C. Mercury
D. Magnesium
Ans : C. Mercury