2023 source guide · Chemistry

NEET 2023 Chemistry Periodic Properties Questions

Use this page to connect the official 2023 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.

Practice 100 verified questions →Check official NTA archive ↗

What to master

periodic trends, effective nuclear charge and anomalous behaviour.

Original practice preview

These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.

Example 1 · difficulty 3/5

Why did isotopes create a difficulty for classification strictly based on atomic mass?

A. Isotopes of different elements always have identical atomic masses
B. Isotopes of one element have different atomic masses but essentially the same chemical properties
C. Every isotope has a different atomic number and must occupy a new group
D. Isotopes occur only among noble gases

Example 2 · difficulty 2/5

Why was the position of hydrogen regarded as uncertain in Mendeleev's classification?

A. Hydrogen had no measurable atomic mass
B. Hydrogen was chemically identical to every noble gas
C. Hydrogen showed similarities to both alkali metals and halogens
D. Hydrogen was discovered only after the periodic table was completed

Example 3 · difficulty 3/5

Which fundamental question remained unanswered by Mendeleev's periodic law?

A. Whether elements can form compounds
B. Whether atomic masses can be measured experimentally
C. Whether metals and non-metals have different properties
D. Why similar properties recur periodically after certain intervals

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

Classification of Elements and Periodicity in Properties →

Frequently asked questions

Are these official NEET 2023 Chemistry Periodic Properties 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 2023 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.