CBSE Class 12 Chemistry Surface Chemistry Notes and Questions

Official CBSE Assignments for Class 12 Chemistry

Explore structured practice materials through the CBSE Class 12 Chemistry Surface Chemistry Notes and Questions. Tailored for Class 12 learners, utilizing these Chemistry assignments ensures thorough preparation and strengthens foundational knowledge before final CBSE evaluations.

Solved Practice Assignments for Chemistry

View or download the dedicated CBSE Class 12 Chemistry Surface Chemistry Notes and Questions resource below. Engaging with these assignments under focused study conditions ensures continuous academic progress and mastery of the 2026-27 curriculum.

The branch of the Chemistry wich deals with the study of surface phenomena is called surface Chemistry.
 
POINTS TO BE REMEMBERED: ---
 
1. Adsorption: - The accumulation of molecules species at the surface rather in the bulk of a solid or liquid is termed adsorption.
2. Desorption:-Removal of adsorbate from the surface of adsorbent is known as Desorption.
3. Sorption:-When adsorption and absorption both takes place simultaneously.
4. Type of adsorption: - On the basis of interaction between adsorption and absorption, adsorbate are of two types:
(i) Physical adsorption/physisorption: - When weak vander waal interaction involve between adsorbate and adsorbent.
(ii) Chemical adsorption/chemisortion:-When chemical bonds form between adsorbate and adsorbent.
5. Adsorption isotherm:-The variation in the amount of gas adsorbed by the adsorbent with pressure at constant temperature can be expressed by means of a curve termed as adsorption isotherm.
6. Application of adsorption:-
(a) Removal of colouring matter from solution using animal charcoal.
(b)Chromatographic analysis is based on adsorption.
7. Freundlich adsorption isotherm:-It is a graph which shows relationship between the quality of gas adsorbed by unit mass of solid adsorbent and pressure at a particular temperature.
 
 
CBSE Class 12 Chemistry Surface Chemistry Notes and Questions
Surface Chemistry
 
8 .Factors affecting adsorption:-
 
(i)Surface area: - Adsorption increases with increases of surface area of adsorbent.

(ii)Nature of adsorbate:- Easily liquefiable gases are readily adsorbed.

(iii)Temperature:-Low temperature is favorable for physical adsorption and High temperature for chemisortion.

(iv)Pressure: - Pressure increases, adsorption increases.

9. CATALYSIS:- Substances which alter the rate of chemical reaction and themselves remain chemically and quantitatively unchanged after the reaction are known as catalyst and the phenomenon is known as catalysis.

10. PROMOTERS AND POISONS Promoters are substance that enhance the activity of catalyst while poisons decrease

the activity of catalyst.
 Surface Chemistry

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Free study material for Chemistry

Chapter Assignment & Practice Material for Class 12 Chemistry Unit 05 Surface Chemistry

Chapter Practice Questions for Class 12 Chemistry

Access structured practice assignments for Unit 05 Surface Chemistry designed in alignment with the latest CBSE curriculum for Class 12 Chemistry. These printable sets cover objective and descriptive problem types to support thorough revision.

Maximize Exam Scores with Chapter Practice Sets

  • Curriculum Standards: Assignments match modern CBSE sample formats to ensure relevant preparation.
  • Thorough Revision: Detailed problem sets reinforce core concepts and eliminate conceptual weak spots.
  • Execution Speed: Timed practice with assignment sets sharpens overall response timing.

How to Approach Chemistry Unit 05 Surface Chemistry Assignments

  1. Initial Reading: Begin by reading the NCERT book for Class 12 Chemistry to build a baseline understanding.
  2. Independent Testing: Attempt assignment questions unassisted, then verify work using provided answer keys.
  3. Supplementary Aids: Leverage revision notes and worksheets whenever you encounter difficult topics.

FAQs

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Do these Chemistry Unit 05 Surface Chemistry assignments include solved questions?

Yes, our teachers have given solutions for all questions in the Class 12 Chemistry Unit 05 Surface Chemistry assignments. This will help you to understand step-by-step methodology to get full marks in school tests and exams.

Are the assignments for Class 12 Chemistry Unit 05 Surface Chemistry based on the 2026 exam pattern?

Yes. These assignments are designed as per the latest CBSE syllabus for 2026. We have included huge variety of question formats such as MCQs, Case-study based questions and important diagram-based problems found in Unit 05 Surface Chemistry.

How can practicing Unit 05 Surface Chemistry assignments help in Chemistry preparation?

Practicing topicw wise assignments will help Class 12 students understand every sub-topic of Unit 05 Surface Chemistry. Daily practice will improve speed, accuracy and answering competency-based questions.

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