Observe the table and answer the following questions. i) Which of the above metals found even in free state in nature ?

Question

High reactivity	Moderate reactivity	Low reactivity
K, Na, Ca, Mg, Al	Zn, Fe, Pb, Cu	Ag, Au

Observe the table and answer the following questions. 

i) Which of the above metals found even in free state in nature ? 

ii) Which of the above metal’s ore are concentrated by using magnetic separation?

Answer 1

i) Ag, Au.

ii) Fe.