Example 1 · difficulty 2/5
For N₂(g) + 3H₂(g) ⇌ 2NH₃(g), the expression for Kc is:
- A. [N₂][H₂]³/[NH₃]²
- B. 2[NH₃]/([N₂]+3[H₂])
- C. [NH₃]²/([N₂][H₂]³)
- D. [NH₃]/([N₂][H₂])
2018 source guide · Chemistry
NEET 2018 Chemistry Equilibrium Questions
Connect the official 2018 paper with current Chemistry practice without labelling original previews as PYQs.
250 original questions · explicit provenance labels
ChemistryPlate 72
NeetVellum atlas · fig. chemistry
72
What to master
chemical equilibrium, acids, bases, buffers, solubility and ionic equilibria.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 2/5
For CaCO₃(s) ⇌ CaO(s) + CO₂(g), Kp is:
- A. pCaO × pCO₂/pCaCO₃
- B. 1/pCO₂
- C. pCaO + pCO₂
- D. pCO₂
Example 3 · difficulty 2/5
For a reaction mixture at a fixed temperature, Qc = 4 and Kc = 9. The net reaction initially:
- A. proceeds forward
- B. proceeds in reverse
- C. is at equilibrium
- D. stops irreversibly
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 2018 Chemistry Equilibrium 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 2018 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.