Question
Copper becomes green when exposed to moist air for a long period. This is due to:- (a) the formation of a layer of cupric oxide
(a) the formation of a layer of cupric oxide on the surface of copper.
(b) the formation of basic copper sulphate layer on the surface of the metal
(c) the formation of a layer of cupric hydroxide on the surface of copper.
(d) the formation of a layer of basic carbonate of copper on the surface of copper.
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Macroeconomics Principles Applications And Tools
Authors: Arthur O Sullivan, Steven M. Sheffrin, Stephen J. Perez
7th Edition
978-0134089034, 9780134062754, 134089030, 134062752, 978-0132555234
