Question

a student was given mg, Zn, Fe and Cu metals he put each of them in dilute HCl contained in four fifferent test tubes identify which of them i) will not displaced hydrogen from dilute HCL. ii) forms a pale green substance iii) will give hydrogen with very dilute nitric acid iv) will be displaced from its salt solution by all other metals​

Answer 1

. According to reactivity series,

• K Potassium

•Na Sodium

• Ca Calcium

•Mg Magnesium

•Al Aluminium

•Zn Zinc

•Fe Iron

•Sn Tin

•Pb Lead

•H Hydrogen

•Cu [Written till copper]