16 JEE Main 2020 Electrochemistry previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2020 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.
The variation of molar conductively with concentration of an electrolyte (X) in aqueous solution is shown in the given…
The photoelectric current from Na (work function, w 0 = 2 . 3 eV ) is stopped by the output voltage of the cell Pt ( s…
An acidic solution of dichromate is electrolyzed for 8 minutes using 2 A current. As per the following equation Cr 2 O…
108  g of silver (molar mass 108  g m o l - 1 ) is deposited at cathode from A g N O 3 a q solution by a cert…
For the disproportionation reaction 2 Cu + aq ⇌ Cu s + Cu 2 + aq at 298 K , ln   K (where K is the equilibri…
An oxidation-reduction reaction in which 3 electrons are transferred has a ΔG 0 of 17 . 37   kJ   mol -…
Potassium chlorate is prepared by the electrolysis of KCl in basic solution 6 OH - + Cl - → ClO 3 - + 3 H 2 O + 6…
E Cu 2 + | Cu 0 = + 0 .34   V E Zn 2 + | Zn 0 = − 0 .76   V Identify the incorrect statement from the o…
Amongst the following, the form of water with the lowest ionic conductance at 298 K is:
What would be the electrode potential for the given half-cell reaction at p H = 5 ? _ _ _ _ _ _ _ _ _ . 2 H 2 O →…
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