The most popular CBSE class 12 chemistry investigatory project topics 2025 are sterilising water with the use of bleaching powder, surface chemistry of colloidal solutions, extraction of the essential oils from fennel seeds, cardamom, and carum, paper chromatography, amount of casein in different milk samples, and many more. The investigatory project in the CBSE class 12th exam 2025 for Chemistry practicals carries 4 marks out of 30 marks.

The CBSE class 12 practical examination will be held from January 1 to January 25, 2015, and students will be evaluated based on experiments, activities, practical records, viva tests and reports on investigatory project topics. Students must review the investigatory project topics of the CBSE 12th Chemistry practical exam 2025 and know the concept and the topics throughly to to deliver satisfactory performance.

Top 8 CBSE Class 12 Chemistry Investigatory Project Topics 2025

The most popular CBSE class 12 chemistry investigatory project topics have been shared below. Students can refer to the CBSE 12th Chemistry syllabus 2024-25 and learn more about the structure of the project report. 

1. Sterilising water with the use of bleaching powder

Objective: The experiment aims to determine the amount of bleaching powder needed for purifying or sterilising various samples of water.

Requirements: Burette, weight box, titration flask, measuring flask (250 ml), graduated cylinder (100 ml), glazed tile, bleaching Powder, glass wool, 10% KI solution, Sodium thiosulfate solution (0.1 N Na2S2O3), starch solution, Glass wool, different water samples

Theory: Drinking water is most commonly purified using bleaching powder or sodium hypochlorite. 5 drops of bleaching powder are added to 2 litres of water. The water is kept for 30 minutes to allow the chemical to disinfect the water, thereby making it fit to drink. Bleaching powder has fewer health risks as compared to other chemicals.

2. Surface chemistry of colloidal solutions

Objective: The experiment aims to understand the surface chemistry of colloidal solutions.

Requirements: Beaker 1 (250 ml), Beaker 2 (50 ml), distilled water (100 ml), wire gauze, funnel, glass rod,  burner, tripod-stand, filter papers, Arabic gum (4.5 g)

Theory: Colloids are said to be homogenous solutions containing different phases. The dispersed phase contains particles which are distributed evenly in the continuous phase. Some colloids also exhibit the Tyndall effect which is the phenomenon of light being scattered by colloidal particles, making them translucent. Gums are secreted by the stems of trees. These gums are natural polysaccharides. When heated with water, this soluble substance becomes hydrolyzed, therefore producing numerous monosaccharides. This results in a colloidal solution.

3. Extraction of the essential oils from fennel seeds, cardamom, and carum

Objective: The experiment aims to extract the essential oils in fennel seeds, cardamom, and carum

Requirements: Conical flask, round-bottomed flask (500 ml), condenser, steam generator (copper vessel),  iron stand, glass tubes, separatory funnel, sand bath, burners, tripod stands, carum, cardamom, aniseed, petroleum ether (60-80°C)

Theory: Essential oils are used in foods as flavouring foods because of their pleasant smells. They consist of complex mixtures. These essential oils are extracted from the seeds and flowers by the method of steam distillation. This method of extraction prevents the essential oils from decomposing.

4. Paper chromatography

Objective: The experiment aims to understand the components of ink in the pens and markers through the method of paper chromatography

Requirements: Beaker 1 (500 ml), Beaker 2 (100 ml), Wooden splints, 90% Isopropyl alcohol, Mini binder clips (2), markers, black pens

Theory: Chromatography is the method of separating the component from the complex mixtures. Several different colours are mixed to form new colours by the ink manufacturers. Various components present in the ink are separated through chromatography, which involves attracting the components to water or alcohol.

5. Amount of casein in different milk samples

Objective: The experiment aims to measure the quantity of casein present in different samples of milk

Requirements: Funnel, conical flask, beakers, watch glass, measuring cylinder (100 ml), filter paper, different samples of milk, 1% acetic acid, glass rod

Theory: Caseins are a form of protein. These are present in milk in very high quantities. The most common type of casein that is found in milk is sodium caseinate. When the milk is unrefrigerated for a very long time, it curdles because bacteria turns it into lactic acid. When exposed to acidic conditions, the casein of milk precipitates.

6. Presence of oxalate in guava

Objective: The experiment aims to analyse the presence of the oxalate ions in guava together with the different ripening stages

Requirements: Measuring flask (100 ml), burette, beaker, pestle and mortar, funnel, weighing machine, filter, papers, (n/10) KMnO4 solution, dilute H2SO4

Theory: Carboxylic acid is a form of acid which is mostly present in animals and plants. It is also present in the human body. During the ripening of guava, the oxalate ions present in the fruit increase at a very fast rate. At a stage when the fruit is the ripest, the amount of oxalate ions present in it is maximum.

7. Potassium bisulphite as a food preservative

Objective: The experiment aims to analyse the role of potassium bisulphite as a preservative of food under varying conditions

Requirements: Beaker, balance, glass bottles, peeler, fresh fruits, pestle and mortar, knife, sugar, potassium bisulphite

Theory: Different kinds of foods undergo chemical changes under standard conditions of temperature, and pressure, and because of various enzymes present in the natural environment. This renders the food unfit for consumption. Potassium bisulphite is used as a preservative for food, preventing the decomposition of food under standard temperature and pressure.

8. Analysing a fertiliser

Objective: The experiment aims to analyse the amount of fertiliser which should be used to yield maximum produce that is economically viable for the producer.

Requirements: Different fertilisers such as urea, superphosphate of lime, ammonium sulphate, calcium ammonium nitrate, etc.

Theory: A fertiliser can be a nitrate mixture or a manure. Fertilisers are used to yield good produce of crops. These are used in the soil to increase its fertility thereby helping the plants and crops give better yield. Fertilisers are the components which are responsible for increasing the fertility of the soil by adding potassium, phosphorus, nitrogen, etc. to help the plants produce better quality and quantity of crops.

Also Read: CBSE Class 12 Chemistry Viva Questions with Answers 2024-25

List of 100+ CBSE Class 12 Chemistry Investigatory Project Topics 2025

Apart from the list shared above, the students can also refer to these additional topics for the CBSE class 12 practical examination 2025 of the investigatory project, shared below. The following list of topics for the investigatory project are curated based on the CBSE class 12th Syllabus 2024-25, which students must review before appearing for the exam. 

1. Abiotic Synthesis of Silicon-Based Life
2. Formation of acid ice
3. Absorbing Ammonia
4. Acid versus Teeth
5. Acidity In Tea
6. Adjusting the level of Chlorine to minimise loss through evaporation
7. Adulterants in Food
8. Activated Charcoal
9. Aldol Condensation
10. Are Copper Pipes a Significant Source of Copper in Drinking Water
11. Alternative methods to produce Iodized Salt
12. Alka-Seltzer rocket race
13. Amorphous solids
14. Amateur studies in polymer construction
15. An Ionic inquiry gives saline solutions
16. Analysis of honey
17. Analysis of bioactive compounds in Arctostaphylos in different solvents
18. Analysis of fruit and vegetable juices
19. Analysing the water for mercury through the use of light
20. Antibacterial Silver
21. Do Copper Pipes act as a good copper resource in Drinking Water
22. Analysis of fertilisers
23. Apple dehydration
24. How can biodiesel be fuel for the future
25. Blocking the ultraviolet light
26. The science of cake
27. Calcium Oxalate: Protector of Marble
28. Calories count
29. Does electricity affect the quality of the hardness of water?
30. Catalytic decomposition
31. Chemical analysis of artificial and authentic Red Coral
32. Chemical investigation of the content of water and an analysis of pH
33. Chemistry in Black and White Photography
34. Analysis of Chocolates
35. Commercial antacid
36. Comparative study and a qualitative analysis of various brands of soft drinks
37. Comparing the percentage of lactose between powdered milk and whole milk 
38. Comparing the differences in Fingerprints
39. Comparing two biodiesel recipes from the view of Flashpoint
40. Composite study of the Bio-Diesel
41. Control of the Hydrophilicity in a Nanoporous Zeolite Film
42. Controlling the growth of Crystal
43. Cooking destroys the Vitamins
44. Correlation between corrosion and conductivity
45. Creating an alternative fuel: Making an oxyhydrogen gas or producing hydrogen gas through electrolysis or vice versa, and producing electricity from hydrogen gas
46. Destruction of the natural pigments through the interaction of ultraviolet light and oxygen
47. Determining the amount of caffeine in different samples of tea 
48. Determination of the content of toothpaste
49. Determining theta by variable solvent
50. Dialysis of various sewage water samples and an identification of different ions in the resulting solutions
51. Digitally advanced thin layered chromatography
52. Discovery of new natural dye in the garden
53. The secret code in DNAs
54. Do the oranges gain or lose vitamin C when picked?
55. Does acid catalyse the rusting of steel?
56. Do all the fibres burn at a similar rate?
57. Does toothpaste stop bacterial growth?
58. Do the methods of cooking methods affect the quantity of Vitamin C present in Carrots?
59. Does the quantity of ammonia affect the forming of salt crystals?
60. Dyeing of silk, wool and cotton in Malachite Green
61. Studying the effect of acid rain on limestone rock
62. Studying the effect of electrolysis on the phenomenon of solar desalination
63. Studying the effect of coupling of metal on the rate of corrosion
64. Studying the effect of sodium carbonate on the foaming capacity of soap
65. Studying the effect of temperature on chemical reaction
66. Studying the effect of temperature on Ascorbic Acid Decay
67. Studying the effect of the pH of electrolyte in the optimization of hydrogen fuel cell
68. Studying the effect of temperature and water in altering the levels of toxicity of different pollutants
69. Studying the effect of dye on various kinds of fabric
70. Studying the effect of heat on the Vitamin C content in tomatoes
71. Electrical cleavage of a mineral ore
72. Electricity and electrolyte
73. The functioning of the electrochemical cell
74. The process of electrographic Metal Detection
75. The separation of Hydrogen from salt water through electrolysis
76. Electrolytes turning on the Solar Cell
77. Elucidation of the molecular Structure as well as bonding by Viscosity
78. Energy Content in candy bars
79. Evaluation and study of the qualitative of obtaining drinking water from different sources
80. Estimation of the quantity and the content of bone ash
81. The process of evaporation of Liquids
82. The process of extraction of Nicotine Sulphate from various samples of Cigarettes
83. The process of examining the Freezing Point Depression (FPD)
84. Finding the difference of conductance with temperature in different electrolytes
85. Studying the fatty material contained in different samples of soap
86. The process of fermentation
87. Fingerprinting in a Crime Scene Investigation
88. Finding the EMF of an Electrochemical Cell
89. Formation and characterization of the Floating and self-assembling
90. The foaming capacity of various soaps
91. Fuel for the Future
92. Super-hydrophobic nanoparticle membranes
93. Thermochemistry and Hess' Law
94. Growing crystals under different conditions
95. Can freezing make anything warmer?
96. What is the difference between carbon dioxide gas and the same quantity of CO2 solid?
97. Is corrosion of iron affected by seawater?
98. How fast do the ions in Hydrogen diffuse through water?
99. What is the science behind powering an engine with water?
100. How to increase the speed of a chemical reaction?
101. Can hydrofoam change the way the world is powered?
102. Ice Spike Formation in the Presence of a Strong Wind
103. Are vegetable dyes effective? Comment.
104. The production of hydrogen

Also, Check: Best Reference Books for CBSE Class 12th Chemistry