2013 · Q45
45. Food cans are coated with tin but not with zinc because
General KnowledgeChemistry
- Azinc is costlier than tin
- Bzinc has a higher melting point than tin
- Czinc is more reactive than tin
- Dtin is more reactive than zinc
Explanation
Zinc is more reactive than tin and would contaminate food; the official key marks C.