Example 1 · difficulty 1/5
For a product P formed during a reaction, its average rate of formation is:
- A. −Δ[P]/Δt
- B. +Δ[P]/Δt
- C. +Δt/Δ[P]
- D. −[P]/t
2019 source guide · Chemistry
NEET 2019 Chemistry Chemical Kinetics Questions
Use this page to connect the official 2019 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
rate laws, order, integrated equations, half-life and activation energy.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 1/5
Instantaneous reaction rate at a given time is obtained from a concentration-time graph as:
- A. The slope of a chord over the whole reaction
- B. The area under the curve
- C. The slope of the tangent at that time
- D. The concentration divided by initial time
Example 3 · difficulty 2/5
The concentration of A falls from 0.80 to 0.50 mol L⁻¹ in 15 s. Its average rate of disappearance is:
- A. 0.30 mol L⁻¹ s⁻¹
- B. 0.050 mol L⁻¹ s⁻¹
- C. 20 mol L⁻¹ s⁻¹
- D. 0.020 mol L⁻¹ s⁻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 2019 Chemistry Chemical Kinetics 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 2019 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.