1
JEE Main 2020 (Online) 7th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Given that the standard potentials (Eo) of Cu2+/Cu and Cu+/Cu are 0.34 V and 0.522 V respectively, the Eo of Cu2+/Cu+ :
A
- 0.182 V
B
- 0.158 V
C
0.182 V
D
+0.158 V
2
JEE Main 2019 (Online) 12th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Given

CO3+ + e $$ \to $$ CO2+ ; Eo = + 1.81 V

Pb4+ + 2e $$ \to $$ Pb2+ ; Eo = + 1.67 V

Ce4+ + e $$ \to $$ Ce3+ ; Eo = + 1.61 V

Bi3+ + 3e $$ \to $$ Bi ; Eo = + 0.20 V

Oxidizing power of the species will increase in the order :
A
Co3+ < Ce4+ < Bi3+ < Pb4+
B
Co3+ < Pb4+ < Ce4+ < Bi3+
C
Ce4+ < Pb4+ < Bi3+ < Co3+
D
Bi3+ < Ce4+ < Pb4+ < Co3+
3
JEE Main 2019 (Online) 10th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following graphs between molar conductivity ($${\Lambda _m}$$) versus $$\sqrt C $$ is correct ?
A
JEE Main 2019 (Online) 10th April Evening Slot Chemistry - Electrochemistry Question 122 English Option 1
B
JEE Main 2019 (Online) 10th April Evening Slot Chemistry - Electrochemistry Question 122 English Option 2
C
JEE Main 2019 (Online) 10th April Evening Slot Chemistry - Electrochemistry Question 122 English Option 3
D
JEE Main 2019 (Online) 10th April Evening Slot Chemistry - Electrochemistry Question 122 English Option 4
4
JEE Main 2019 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Consider the statements S1 and S2

S1 : Conductivity always increases with decrease in the concentration of electrolyte.

S2 : Molar conductivity always increases with decrease in the concentration of electrolyte.

The correct option among the following is :
A
Both S1 and S2 are wrong
B
S1 is correct and S2 is wrong
C
Both S1 and S2 are correct
D
S1 is wrong and S2 is correct
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