Electrochemistry practice focused on conductance, electrochemical cells, the Nernst equation and electrolysis. Every preview below comes from NeetVellum's live original bank—not an unverified PYQ reconstruction.
conductance, electrochemical cells, the Nernst equation and electrolysis.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 1 · difficulty 1/5
In a galvanic cell that is delivering current, which one of the following statements is correct?
A. Electrons flow from the cathode to the anode through the external circuit
B. The anode acquires a positive polarity
C. Cations of the salt bridge migrate towards the cathode compartment
D. Oxidation occurs at the cathode
Example 2 · difficulty 2/5
For the cell Zn(s) | Zn²⁺(0.1 M) || Cu²⁺(0.01 M) | Cu(s), the standard cell potential is 1.10 V at 298 K. The EMF of the cell will be:
A. 1.10 V
B. 1.07 V
C. 1.13 V
D. 1.04 V
Example 3 · difficulty 3/5
The standard EMF of a cell operating the reaction Zn(s) + Cu²⁺(aq) ⇌ Zn²⁺(aq) + Cu(s) is 1.10 V at 298 K. The equilibrium constant of the reaction is approximately:
A. 2 × 10³⁷
B. 2 × 10¹⁸
C. 10³⁷
D. 5 × 10³⁶
The evidence-first practice loop
1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
2. Attempt closed-bookExpose the concept or execution gap before rereading.
3. Repair and returnClassify the miss and re-practice after a delay.