JEE Main 2014 — d and f Block Elements Question with Solution
JEE Main 2014 (12 Apr Online)
Question
Copper becomes green when exposed to moist air for a long period. This is due to:
Choose an option
Show full solutionCorrect option: D
Correct answer
Dthe formation of basic copper sulphate layer on the surface of the metal.
Step-by-step explanation
Copper when exposed to moist air having . It gets superficially coated with a green layer of basic carbonate . .
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This is a previous-year question from JEE Main 2014, covering the d and f Block Elements chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.