1
JEE Main 2016 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
Galvanization is applying a coating of :
A
Cr
B
Cu
C
Zn
D
Pb
2
JEE Main 2015 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
Two Faraday of electricity is passed through a solution of CuSO4. The mass of copper deposited at the cathode is: (at. mass of Cu = 63.5 amu)
A
63.5 g
B
2 g
C
127 g
D
0 g
3
JEE Main 2014 (Offline)
MCQ (Single Correct Answer)
+4
-1
Resistance of 0.2 M solution of an electrolyte is 50 $$\Omega$$. The specific conductance of the solution is 1.4 S m-1. The resistance of 0.5 M solution of the same electrolyte is 280 $$\Omega$$. The molar conductivity of 0.5 M solution of the electrolyte in S m2 mol-1 is :
A
5 × 103
B
5 × 102
C
5 × 10-4
D
5 × 10-3
4
JEE Main 2014 (Offline)
MCQ (Single Correct Answer)
+4
-1
Given below are the half-cell reactions:

Mn2+ + 2e- $$\to$$ Mn; Eo = -1.18 V

2(Mn3+ + e- $$\to$$ Mn2+); Eo = +1.51 V

The Eo for 3Mn2+ $$\to$$ Mn + 2Mn3+ will be :
A
– 0.33 V; the reaction will not occur
B
– 0.33 V; the reaction will occur
C
– 2.69 V; the reaction will not occur
D
– 2.69 V; the reaction will occur
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