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1
JEE Main 2021 (Online) 16th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
Given below are two statements :

Statement I : The Eo value for Ce4+ / Ce3+ is + 1.74 V.

Statement II : Ce is more stable in Ce4+ state than Ce3+ state.

In the light of the above statements, choose the most appropriate answer from the options given below :
A
Statement I is incorrect but statement II is correct
B
Both statement I and statement II are correct
C
Both statement I and statement II are incorrect
D
Statement I is correct but statement II is incorrect
2
JEE Main 2021 (Online) 24th February Morning Slot
MCQ (Single Correct Answer)
+4
-1
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The electrode potential of M2+/M of 3d-series elements shows positive value for :
A
Zn
B
Fe
C
Cu
D
Co
3
JEE Main 2020 (Online) 6th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
For the given cell :

Cu(s) | Cu2+(C1M) || Cu2+(C2M) | Cu(s)

change in Gibbs energy ($$\Delta $$G) is negative, if
A
C2 = $$\sqrt 2 $$C1
B
C2 = $${{{C_1}} \over {\sqrt 2 }}$$
C
C1 = 2C2
D
C1 = C2
4
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
The variation of molar conductivity with concentration of an electrolyte (X) in aqueous solution is shown in the given figure. JEE Main 2020 (Online) 5th September Evening Slot Chemistry - Electrochemistry Question 54 English
The electrolyte X is :
A
HCl
B
CH3COOH
C
NaCl
D
KNO3
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