CBSE Class 10 Practicals play a vital role in enhancing students’ knowledge. Lab work is a crucial component in order to make students’ learning complete, especially in Science. CBSE has included the Class 10 Science practicals in secondary classes intending to make students acquainted with the basic tools and techniques used in the laboratory.
Also see: CBSE Class 10 Exams
By performing the experiments, students will understand the concept in a better way and their basics will become stronger. Students also develop a keen interest in Science along with questioning skills and scientific temperament.
With the help of the following tips, students can successfully perform the experiments listed in the CBSE class 10 Science practicals.
In the Class 10 board exam, Science practicals also carry marks. The class 10 Science theory paper is of 80 marks and 20 marks are allocated to internal assessment. The marking scheme for internal assessment is as follows:
|Internal Assessment Class 10 Science Marking Scheme|
|Periodic Assessment||05 marks + 05 marks|
|Practical Work||05 marks|
List of Experiments for CBSE class 10 Science Practicals 2022-23
In class 10 Science, a total of 14 practicals are included in the syllabus as given below:
|1||A. Finding the pH of the following samples by using pH paper/universal indicator:
(i) Dilute Hydrochloric Acid
(ii) Dilute NaOH solution
(iii) Dilute Ethanoic Acid solution
(iv) Lemon juice
(vi) Dilute Hydrogen Carbonate solution
B. Studying the properties of acids and bases (HCl & NaOH) on the basis of their reaction with:
a) Litmus solution (Blue/Red)
b) Zinc metal
c) Solid sodium carbonate
|2.||Performing and observing the following reactions and classify them into:
A. Combination reaction
B. Decomposition reaction
C. Displacement reaction
D. Double displacement reaction
(i) Action of water on quicklime
(ii) Action of heat on ferrous sulphate crystals
(iii) Iron nails kept in copper sulphate solution
(iv) Reaction between sodium sulphate and barium chloride solutions
|3.||Observing the action of Zn, Fe, Cu and Al metals on the following salt solutions:
iv) Al2 (SO4)3(aq)
Arranging Zn, Fe, Cu and Al (metals) in decreasing order of reactivity based on the above result.
|4.||Studying the dependence of potential difference (V) across a resistor on the current (I) passing through it and determine its resistance. Also plotting a graph between V and I.||Physics|
|5.||Determination of the equivalent resistance of two resistors when connected in series and parallel.||Physics|
|6.||Preparing a temporary mount of a leaf peel to show stomata.||Biology|
|7.||Experimentally show that carbon dioxide is given out during respiration.||Biology|
|8.||Study of the following properties of acetic acid (ethanoic acid):
ii) Solubility in water
iii) Effect on litmus
iv) Reaction with Sodium Hydrogen Carbonate
|9.||Study of the comparative cleaning capacity of a sample of soap in soft and hard water.||Chemistry|
|10.||Determination of the focal length of:
i) Concave mirror
ii) Convex lens
by obtaining the image of a distant object
|11.||Tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. Measure the angle of incidence, angle of refraction, angle of emergence and interpret the result.||Physics|
|12.||Studying (a) binary fission in Amoeba, and (b) budding in yeast and Hydra with the help of prepared slides.||Biology|
|13.||Tracing the path of the rays of light through a glass prism.||Physics|
|14.||Identification of the different parts of an embryo of a dicot seed (Pea, gram or red kidney bean).||Biology|
CBSE Class 10 Science Practical Important Questions
In Viva, questions are generally asked from the basic theory portion related to practicals. So focus on the related terminology, chemical formula/composition, properties, etc.
For example, if you are studying for Practical Q. No. 3 ‘the action of different metals on the various salt solutions’, then you should know the definition of displacement reaction, activity series, and its characteristics.
In Viva, general application and significance-based questions are asked from the practicals such as the preparation of temporary mounts, and the study of various asexual modes of reproduction. For practicals related to the topic of Photosynthesis, a depth study of the procedure and key roles of certain chemicals added should be remembered.
Generally, application-based questions are asked in viva. So focus on concepts and their applications. It is also important to remember the definitions.
Students should remember the ray diagrams, circuit diagrams as well as formulae which are generally used in practicals.
Students should have adequate knowledge of apparatus and instruments.
Key tips to remember:
- Read experiments carefully and understand the underlying concept.
- For writing answers, learn the stepwise procedures and write them in the passive voice.
- Don’t cram readings/observations. Conduct your experiment with a calm mind and write the readings/observations obtained.
- Be thorough with the diagrams and draw neat and well-labeled diagrams wherever required.
- Be confident and calm while performing experiments.
- While performing Chemistry experiments, handle the equipment and chemicals carefully as some of these chemicals are strongly reactive.
- Observe the readings carefully and don’t forget to use standard conventions and SI units while writing answers.
Backed with practice and a regular learning schedule, these tips will surely help you to perform outstandingly in your practical exams.
FAQs about Practical Exam Tips for CBSE 2023
1. How to prepare for a science practical exam?
Here are some interesting tips on how to prepare for your science practical exams:
Pay attention in classes
Make proper notes
Be thorough with diagrams and circuits
Be confident during the practical examination
2. What if we fail in practicals?
In case a candidate has failed in practical he/she shall have to appear in theory and practical irrespective of the fact that he/she has already cleared the theory examination.
3. What is the importance of a practical exam?
A practical exam strengthens the comprehension and understanding of a particular subject. Even though theoretical education makes use of textbooks and research papers, applying that knowledge in the real world and having a first-hand experience with it will help you understand it in a much better way.
4. Are practical marks counted?
Practical marks are not counted separately. The combined score with theory is taken. Practicals do help to increase your percentage.
5. Can practical marks be changed?
No change in marks is allowed after finalisation and completion of the process.