Example 1 · difficulty 4/5
Given that Ksp(AgCl) = 1.8 × 10⁻¹⁰, what is the molar solubility of AgCl in a 0.10 M NaCl solution?
- A. 1.34 × 10⁻⁵ mol L⁻¹
- B. 1.8 × 10⁻¹⁰ mol L⁻¹
- C. 1.8 × 10⁻¹¹ mol L⁻¹
- D. 1.8 × 10⁻⁹ mol L⁻¹
2020 source guide · Chemistry
NEET 2020 Chemistry Questions
Use this page to connect the official 2020 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.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 1/5
How many monohydric alcohols are possible for the molecular formula C₄H₁₀O (ethers excluded)?
- A. 2
- B. 3
- C. 4
- D. 5
Example 3 · difficulty 2/5
Propene is treated with diborane in diglyme, and the organoborane formed is then oxidised with alkaline hydrogen peroxide. The major product is:
- A. Propan-2-ol
- B. Propan-1-ol
- C. Propane-1,2-diol
- D. Propanal
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
Some Basic Concepts of Chemistry →Structure of Atom →Classification of Elements and Periodicity in Properties →Chemical Bonding and Molecular Structure →Thermodynamics →Equilibrium →Redox Reactions →Organic Chemistry: Some Basic Principles and Techniques →Hydrocarbons →Solutions →Electrochemistry →Chemical Kinetics →The d- and f-Block Elements →Coordination Compounds →Haloalkanes and Haloarenes →Alcohols, Phenols and Ethers →Aldehydes, Ketones and Carboxylic Acids →Amines →Biomolecules →
Frequently asked questions
Are these official NEET 2020 Chemistry 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 2020 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.