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Vallabha from ,
Subject :Sam    Class : Sample

When Cu is exposed to moist air for a long time, which of the following is formed?

ACu(OH)2
BCuCO3
CBoth (A) and (B)
DCu2O


i think it must be d as metals react with oxygen to give oxides of them

Ans 1:

Pranjal Mehra from Saket MGM Sr Sec School, Bhopal
Class : Class 8

Ans 2:

varsha gore from Pawar Public School Nandedcity Pune, Pune
Class : Class 8

Ans 3:

Harshit from DG Khetan International School, Mumbai
Class : Class 8

Ans 4:

Sarvik Mehta from R P S Public School, Lilodh
Class : Class 8
C) Both (A) and (B) Cu(OH)2 and CuCO3

Ans 5:

Rick Banerjee from Calcutta Boys School, Kolkata
Class : Class 8

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