NEET UG · Chemistry · Some Basic Concepts of Chemistry
Empirical and Molecular Formula
NEET asked Empirical and Molecular Formula twice, in 2021 and 2024: 2 of the 1,875 questions in the 10 papers from 2017–2026. It belongs to Mole Concept, in Some Basic Concepts of Chemistry (Chemistry). The longest wait between two papers asking it was 3 years.
Updated 2026-10-08
- Times asked
- 2
- in 2017–2026
- Papers
- 2
- of 10
- First asked
- 2021
- last in 2024
- Chance next paper
- 6%
- calibrated historical rate
Questions on this idea, by paper
2017–2026. 2021 and 2024.
How NEET framed it
Numerical is the usual form. Skill tested: calculation.
- Numerical
Chance asked next paper 6%
Every question
All 2 questions
From the official NEET UG papers, newest first. Open one for the full question, the options and the official answer.
- 2024 Q92A compound X contains 32% of A, 20% of B and remaining percentage of C. Then, the empirical formula of X is : (Given atomic masses of A =…Numerical · Medium
- 2021 Q58An organic compound contains 78% (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this…Numerical · Easy
Same topic
Other ideas in Mole Concept
Mole Concept has 7 ideas NEET has asked; 3 of them came up in more than one question.
- Stoichiometric Calculations5× · 2026
- Mole-Mass-Particle Conversions3× · 2024
- Significant Figuresonce · 2026
- Counting Atoms in Polyatomic Moleculesonce · 2025
- Laws of Chemical Combinationonce · 2025
- Percentage Purity of a Sampleonce · 2023