Question 33
Metals and their CompoundsHydrogen can be displaced from a hot alkaline solution by
- A.Fe
- B.Cu
- C.Ca
- D.Sn
Show the answer and explanation
Answer: D (Sn)
Explanation
Amphoteric metals such as tin, zinc and aluminium react with hot alkali to give hydrogen and a stannate/zincate/aluminate. Iron and copper do not; calcium is not amphoteric.