Among the following the number of metals which are rendered passive in the presence of conc. HNO 3. Al, Sn, Pb , Fe , Cr , Zn , Ni , Hg , Cu.

Question

Among the following the number of metals which are rendered passive in the presence of conc. HNO 3. Al, Sn, Pb , Fe , Cr , Zn , Ni , Hg , Cu. (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

Al, Fe, Cr, Ni are rendered passive by conc. HNO 3.

Q. Among the following the number of metals which are rendered passive in the presence of conc. $H N O_{3}$ . $A l, S n, P b, F e, C r, Z n, N i, H g, C u$ .

$A l, F e, C r, N i$ are rendered passive by conc. $H N O_{3}$ .

Q. Among the following the number of metals which are rendered passive in the presence of conc. HNO3​. Al,Sn,Pb,Fe,Cr,Zn,Ni,Hg,Cu.

Al,Fe,Cr,Ni are rendered passive by conc. HNO3​.

Q. Among the following the number of metals which are rendered passive in the presence of conc. $H N O_{3}$ . $A l, S n, P b, F e, C r, Z n, N i, H g, C u$ .

$A l, F e, C r, N i$ are rendered passive by conc. $H N O_{3}$ .