21 JEE Main 2021 Electrochemistry previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2021 previous-year questions from the Electrochemistry chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Electrochemistry chapter hub.
Assume a cell with the following reaction Cu ( s ) + 2 Ag + 1 × 10 - 3 M → Cu 2 + ( 0 . 250 M ) + 2 Ag ( s )…
Given below are two statements : Statement I : The E ° value of Ce 4 + / Ce 3 + is + 1 . 74   V Statement II…
For the reaction 2 Fe 3 + ( aq ) + 2 I - ( aq ) → 2 Fe 2 + ( aq ) + I 2 (   s ) the magnitude of the standar…
These are physical properties of an element (A) Sublimation enthalpy (B) Ionisation enthalpy (C) Hydration enthalpy (D)…
Potassium chlorate is prepared by electrolysis of KCl in basic solution as shown by following equation. 6 OH - + Cl - &…
The conductivity of a weak acid   HA of concentration 0 . 001   mol   L - 1 is 2 . 0 × 10 - 5  …
Match List - I with List - II : List - I (Parameter) List - II (Unit) (a) Cell constant (i) S   cm 2   mol -…
For the cell Cu ( s ) Cu 2 + ( aq ) ( 0 . 1 M ) ‖ Ag + ( aq ) ( 0 . 01 M ) Ag ( s ) the cell potential E 1 = 0 .…
Emf of the following cell at 298   K in V is x × 10 - 2 Zn Zn 2 + 0 . 1 M ‖ Ag + 0 . 01 M Ag The value…
The molar conductivity at infinite dilution of barium chloride, sulphuric arid and hydrochloric acid are 280 ,   8…
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