Questions
Statement I : Concentrated nitric acid makes metal aluminium passive
Statement II : A protective layer of aluminium oxide is formed on the surface
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Correct option is A
"Al" metal resistant or passive to the concentrated acids [conc.HNO3] due to the formation of protective oxide layer on its surface.Similar Questions
The bond dissociation energy of BF bond in BF3 is 646 kJ mol–1 whereas that of CF in CF4 is 315 kJ mol–1. The correct reason for higher BF bond dissociation energy as compared to that of CF bond is :
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