1
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
Given

$$E_{C{r^{2 + }}/Cr}^o$$ = -0.74 V; $$E_{MnO_4^ - /M{n^{2 + }}}^o$$ = 1.51 V

$$E_{C{r_2}O_7^{2 - }/C{r^{3 + }}}^o$$ = 1.33 V; $$E_{Cl/C{l^ - }}^o$$ = 1.36 V

Based on the data given above, strongest oxidising agent will be :
A
Cr3+
B
Mn2+
C
$$MnO_4^ - $$
D
Cl-
2
AIEEE 2012
MCQ (Single Correct Answer)
+4
-1
The standard reduction potentials for Zn2+/ Zn, Ni2+/ Ni, and Fe2+/ Fe are –0.76, –0.23 and –0.44 V respectively. The reaction

X + Y2+ $$\to$$ X2+ + Y will be spontaneous when :
A
X = Ni, Y = Fe
B
X = Ni, Y = Zn
C
X = Fe, Y = Zn
D
X = Zn, Y = Ni
3
AIEEE 2011
MCQ (Single Correct Answer)
+4
-1
The reduction potential of hydrogen half cell will be negative if :
A
p(H2) = 1 atm and [H+] = 1.0 M
B
p(H2) = 1 atm and [H+] = 2.0 M
C
p(H2) = 2 atm and [H+] =1.0 M
D
p(H2) = 2 atm and [H+] =2.0 M
4
AIEEE 2010
MCQ (Single Correct Answer)
+4
-1
The correct order of $$E_{{M^{2 + }}/M}^o$$ values with negative sign for the four successive elements Cr, Mn, Fe and Co is :
A
Mn > Cr > Fe > Co
B
Cr > Fe > Mn > Co
C
Fe > Mn > Cr > Co
D
Cr > Mn > Fe > Co
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