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
Use this page to connect the official 2025 paper with current Chemistry practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.
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.