Solution which contain copper(II) ions (Cu+2) is :
Which of the following are wrong statements
I) Acetaldehyde reduces Fehling's solution to Cu(II) oxide
II) Acetaldehyde is reduced by fehlings solution forming Cu2O precipitate
III) Ketones cannot reduce Fehling's solution
IV) Aldehydes can reduce Tollen's reagent into silver mirror
When a copper wire is placed in a solution of AgNO3, the solution acquires blue colour. This is due to the formation of