Surface Chemistry is a Class 12 Chemistry chapter that carries about 2.5% of the Chemistry questions in NEET. Practise it with 40 questions covering 3 topics, each with an explanation.
Sets of 15 questions that adapt to your level, with an explanation for every answer.
Across the 13 previous year papers, Surface Chemistry had 16 questions, about 1.2 a year. The most in one paper was 2, in AIPMT 2014.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 1 |
| NEET 2025 | 2 |
| NEET 2024 | 0 |
| NEET 2023 | 2 |
| NEET 2022 | 1 |
| NEET 2021 | 1 |
| NEET 2020 | 2 |
| NEET 2019 | 1 |
| NEET 2018 | 1 |
| NEET 2017 | 1 |
| NEET 2016 | 2 |
| Re-AIPMT 2015 | 0 |
| AIPMT 2014 | 2 |
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
According to the Freundlich adsorption isotherm, a plot of log(x/m) against log P is:
Answer: A. a straight line of slope 1/n
Why: Taking logarithms of x/m = kP^(1/n) gives log(x/m) = log k + (1/n)log P — a straight line of slope 1/n and intercept log k.
In heterogeneous catalysis, the reaction is generally believed to proceed through:
Answer: A. adsorption of reactants onto the catalyst surface, reaction, then desorption of products
Why: The adsorption theory describes heterogeneous catalysis as reactants adsorbing onto active sites on the catalyst surface, reacting there, and the products then desorbing to free the site for further reaction.
Electrophoresis is the:
Answer: A. movement of colloidal particles under the influence of an electric field
Why: It shows that colloidal particles carry charge.
Adsorption of a gas on a solid surface is accompanied by:
Answer: B. a decrease in the enthalpy and entropy of the system
Why: ΔH is negative and ΔS is negative, since the gas molecules become more ordered.
The rate of an enzyme-catalysed reaction is maximum at an optimum temperature of about:
Answer: D. 310 K (body temperature) and a suitable pH
Why: At higher temperatures, the enzyme is denatured.
A micelle is formed by soap molecules when the concentration is above the:
Answer: C. critical micelle concentration (CMC), and above the Kraft temperature
Why: The hydrocarbon tails point inwards and the ionic heads point outwards.
The adsorption of a gas by charcoal is increased by:
Answer: D. lowering the temperature and raising the pressure
Why: Physical adsorption is exothermic.
The enzyme invertase catalyses the conversion of:
Answer: A. sucrose into glucose and fructose
Why: Zymase converts glucose into ethanol and CO₂.
Surface Chemistry carries about 2.5% of the Chemistry questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 16 times, about 1.2 questions a year.
Surface Chemistry is a Class 12 Chemistry chapter in the NCERT syllabus.
NeetVictory has 40 practice questions on Surface Chemistry, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.
NeetVictory