NEET · Chemistry

States of Matter: Gas and Intermolecular Foundations with Current NEET UG 2026 Status

Keep the route as contextual foundation for gas/liquid/solid ideas without mislabelling it as a current Chemistry unit.

Subject: Chemistry
Syllabus unit: Historical / not currently listed in NEET UG 2026

In short

States of Matter is not explicitly listed as a standalone Chemistry unit in the verified NEET UG 2026 syllabus. Some related ideas remain distributed elsewhere, such as physical equilibria in Chemistry Unit 6 and gas kinetic theory in Physics Unit 9. This route must remain contextual.

Syllabus mapping

Syllabus mapping
Unit	Topics
Historical / not currently listed in NEET UG 2026	Current status and distributed overlap, Foundation, Handoffs

Unit
Historical / not currently listed in NEET UG 2026
Topics
Current status and distributed overlap, Foundation, Handoffs

Before this chapter

Concepts in this chapter

1. Current status and distributed overlap

There is no standalone Chemistry States of Matter unit in the verified 20-unit Chemistry list. Related concepts should be routed to their actual current owners rather than used to imply this page is current.

2. Foundation

For an ideal-gas model:

PV = nRT.

At constant temperature for a fixed amount of ideal gas, pressure varies inversely with volume; at constant pressure, volume is proportional to absolute temperature. These are foundational relationships, not a current standalone Chemistry chapter claim.

Intermolecular forces help explain why real substances differ in boiling point, condensation behaviour and ideality, but detailed van der Waals derivations should not be imported without current scope support.

3. Handoffs

Physical phase equilibria and Henry's law -> /neet/chemistry/equilibrium (C01).
Kinetic theory of gases -> current NEET Physics, not this Chemistry route.

4. Reaction / formula / condition records

Formula records only: PV=nRT as contextual foundation. No reaction records required.

5. Decision aids for this chapter

Distributed-Scope Map showing which old States-of-Matter concepts now belong to current Chemistry Equilibrium or Physics Kinetic Theory.

Worked examples

At constant temperature, an ideal gas is compressed to half its volume. What happens to pressure?

Original NEET-style reasoning item: At constant temperature, an ideal gas is compressed to half its volume. What happens to pressure?

Reasoning: it doubles, from the inverse P-V relationship for fixed n,T.

Original Rank Sarthi reasoning item. It is not a past-year question and carries no exam provenance.

Common mistakes and what they actually indicate

Uses Celsius directly in gas proportionality
Execution error
Why it happens
Preparation Intelligence classification: Execution Error.
How it is corrected
Use absolute temperature where the law requires it.
Treats ideal-gas equation as exact for all conditions
Knowledge gap
Why it happens
Preparation Intelligence classification: Knowledge Gap.
How it is corrected
Recognise it as a model.
Assumes old chapter title is current
Decision / selection error
Why it happens
Preparation Intelligence classification: Decision / Selection Error.
How it is corrected
Follow distributed current owners.
Imports real-gas derivations not in current scope
Needs review
Why it happens
Preparation Intelligence classification: Needs Review.
How it is corrected
Omit unless source/syllabus supports them.

FAQ