Amongst the following, the metals which become passive when dipped in conc. HNO_(3)" are "Sn,Pb,Fe,Cr,Zn,Ni,Hg,Al,Cu.

Amongst the following, the metals which become passive when dipped in

1.	Amongst the following, the metals which become passive when dipped in conc. HNO_(3)" are "Sn,Pb,Fe,Cr,Zn,Ni,Hg,Al,Cu.
Answer» SOLUTION :4, i.e., Fe, Cr, Ni and AL become PASSIVE when DIPPED in conc. `HNO_(3)`.