Which fo the following metals cannot deplace hydrogen from nonoxidizing acids ?
(i) `Au" "` (ii) `Pt`
(iii) `Ag" "` (iv) `Cu`

Options

A. (i) , (ii), (iii)
B. (ii), (iii), (iv)
C. (i), (ii)
D. (i), (ii), (iii), (iv)

Answer

D

Explanation

Elements such as Sb (a metalloid) , `Cu, Hg, Ag, Pt`, and `Au` (metals ) which lie below H in the activity series cannot displace H from non-oxidizing acids.