New chat PYQ Library Doubts Rank report

Sign in to see Recents

Sign in to save progress →

Electrochemistry question

2021 · Shift 2 · Q4

Guest · try one question or challengeGuest · try one question or challenge

PYQ Library
JEE Advanced
Chemistry
Electrochemistry
2021 · Shift 2 · Q4

Electrochemistry question

2021 · Shift 2 · Q4

JEE AdvancedChemistryElectrochemistryMultiple correct+4 / −2

Some standard electrode potentials at 298 K are given below :

Pb^{2+}

/

Pb

=

-

0.13 V

Ni^{2+}

/

Ni

=

-

0.24 V

Cd^{2+}

/

Cd

=

-

0.40 V

Fe^{2+}

/

Fe

=

-

0.44 V To a solution containing 0.001 M of

X^{2+}

and 0.1 M of

Y^{2+}

, the metal rods X and Y are inserted (at 298 K) and connected by a conducting wire. This resulted in dissolution of X. The correct combination(s) of X and Y, respectively, is(are) (Given : Gas constant, R = 8.314 J K

-

mol

-

1, Faraday constant, F = 96500 C mol

-

1)

A
Cd and Ni
B
Cd and Fe
C
Ni and Pb
D
Ni and Fe

More from Electrochemistry

At 298 K, the limiting molar conductivity of a weak monobasic acid is 4 $\times$ 102 S cm2 mol $-$ 1. At 298 K, for an aqueous solution of the acid the degree of dissociation is $α$ and the molar conductivity is y $\times$ 102 S cm2…2021 · Numerical
At 298 K, the limiting molar conductivity of a weak monobasic acid is 4 $\times$ 102 S cm2 mol $-$ 1. At 298 K, for an aqueous solution of the acid the degree of dissociation is $α$ and the molar conductivity is y $\times$ 102 S cm2…2021 · Numerical
Consider a 70% efficient hydrogen-oxygen fuel cell working under standard conditions at 1 bar and 298 K. Its cell reaction is $H_{2} (g) + \frac{1}{2} O_{2} (g) H_{2} O (l)$ The work derived from the cell on the consumption of…2020 · Numerical
Molar conductivity ( $Λ$ m) of aqueous solution of sodium stearate, which behaves as a strong electrolyte, is recorded at varying concentrations (C) of sodium stearate. Which one of the following plots provides the correct…2019 · MCQ
For the electrochemical cell, $M g (s) ∣ M g^{2 +} (a q, 1 M) C u^{2 +} (a q, 1 M) ∣ C u (s)$ the standard $e m f$ of the cell is $2.70 V$ at $300 K .$ …2018 · Numerical
Consider an electrochemical cell : $A (s) ∣ A^{n +} (a q, 2 M) ∣ B^{2 n +} (a q, 1 M) ∣ B (s) .$ The value of $Δ H^{\circ}$ for the cell reaction is twice…2018 · Numerical
The conductance of a $0.0015 M$ aqueous solution of a weak monobasic acid was determined by using a conductivity cell consisting of platinized $P t$ electrodes. The distance between the electrodes is $120 c m$ with an area of cross section of $1 c m^{2} .$ …2017 · Numerical
For the following cell, $Z n (s) ∣ Z n S O_{4} (a q) ∣ ∣ C u S O_{4} (a q) ∣ C u (s)$ when the concentration of $Z n^{2 +}$ is $10$ times the concentration of $C u^{2 +},$ …2017 · MCQ