Which of the following metals exist in their native state in nature?
(i) Cu
(ii) Au
(iii) Zn
(iv) Ag
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (ii) and (iv)
(d) (iii) and (iv)
Ans. (c)
Gold and silver (Au and Ag) are noble metals and are very less reactive, so they are usually found in free state (native state) in nature.