MCQ
Stainless steel does not rust because
- AChromium and nickel combine with iron
- ✓Chromium forms an oxide layer and protects iron from rusting
- CNickel present in it, does not rust
- DIron forms a hard chemical compound with chromium present in it.
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$E_{{A^{3 + }}/A}^o = 1.50\,\,V\,,$ $E_{{B^{2 + }}/B}^o = 0.3\,\,V,$
$E_{{C^{3 + }}/C}^o = - \,0.74\,\,V,$ $E_{{D^{2 + }}/D}^o = - \,2.37\,\,V.$
The correct sequence in which the various metals are deposited at the cathode is
