Example 1 · difficulty 2/5
A molar conductivity of 120 S cm² mol⁻¹ is expressed in SI area units. Which value is correct?
- A. 1.20 × 10⁶ S m² mol⁻¹
- B. 1.20 S m² mol⁻¹
- C. 0.120 S m² mol⁻¹
- D. 0.0120 S m² mol⁻¹
2025 source guide · Chemistry
NEET 2025 Chemistry Electrochemistry Questions
Connect the official 2025 paper with current Chemistry practice without labelling original previews as PYQs.
250 original questions · explicit provenance labels
ChemistryPlate 86
NeetVellum atlas · fig. chemistry
86
What to master
conductance, electrochemical cells, the Nernst equation and electrolysis.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 2/5
At constant temperature, which pair of changes normally occurs when an electrolyte solution is diluted?
- A. Conductivity decreases, while molar conductivity increases.
- B. Both conductivity and molar conductivity decrease.
- C. Conductivity increases, while molar conductivity decreases.
- D. Both conductivity and molar conductivity remain unchanged.
Example 3 · difficulty 2/5
At infinite dilution, Λₘ°(KCl) is 149.9 S cm² mol⁻¹ and λ°(K⁺) is 73.5 S cm² mol⁻¹. What is λ°(Cl⁻)?
- A. 73.5 S cm² mol⁻¹
- B. 76.4 S cm² mol⁻¹
- C. 149.9 S cm² mol⁻¹
- D. 223.4 S cm² mol⁻¹
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.
Canonical chapter practice
Frequently asked questions
Are these official NEET 2025 Chemistry Electrochemistry PYQs?
No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.
How should I use the NEET 2025 paper?
Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.