https://school.careers360.com/boards/cbse/cbse-class-12-chemistry-syllabus

To construct a properly structured and informative Class 12 Chemistry Practical copy, incorporate the following elements for each experiment:

1. Objective: State clearly what the aim of the experiment is.

2. Apparatus Required: List all the equipment, chemicals, etc. required.

3. Procedure: Describe in detail the step-by-step procedure. Include observations and take proper precautions.

4. Observations: Record your observations in a tabular format or descriptive form, as appropriate.

5. Calculations (if applicable): Give all the calculations carried out in the experiment in terms of units.

6. Result: Give the outcome of the experiment for example the final result or conclusion.

7. Precautions: Provide any safety measures taken during the experiment.

8. Sources of Error: Discuss any possible sources of error which may have influenced the outcome of the experiment.

9. Viva Voce Questions: Prepare for all possible questions that may be given in the practical examination.

Some other tips for practical copy are as follows:

Neatness: Your work should be clean and readable.

Clarity: Explanations should be clear and to the point.

Accuracy: Your observations and calculations must be accurate.

Date and Time: Date and time of every experiment must be mentioned.

Teacher's Signature: Obtain your teacher's signature on your practical file for validation purposes.

You can even take assistance for your practical copy from past year question papers, practical manuals, or even internet resources. Just make sure to not borrow straight lines, only borrow ideas.

You see, a clean practical copy will also boost your overall practical marks.