Step-by-Step Science Experiments for CBSE Class 6 Practical Exam Success
FAQs on Essential Science Lab Manual for CBSE Class 6 Students - 2025-26
1. What types of questions are considered important from the CBSE Class 6 Science Lab Manual for the 2025-26 exams?
For the 2025-26 session, important questions from the Class 6 Science Lab Manual focus on the aim, procedure, observation, and conclusion of experiments. Key areas for questions include:
- Identifying required apparatus for an experiment.
- Drawing and labelling key diagrams like parts of a flower, a simple electric circuit, or root systems.
- Answering viva-voce questions based on the underlying scientific principles.
- Stating the necessary precautions for each experiment to ensure safety and accuracy.
2. Which experiments from the Class 6 Science Lab Manual generally carry high weightage in practical exams?
While the exact marks distribution may vary, experiments covering fundamental concepts are typically given more importance. For Class 6, frequently tested and high-weightage experiments often include:
- Testing for the presence of starch, proteins, and fats in various food samples.
- Demonstrating separation of substances using methods like filtration, decantation, and evaporation.
- Assembling a simple electric circuit to test for conductors and insulators.
- Observing and drawing the parts of a plant, such as dissecting a flower or identifying root types.
3. How does maintaining a good practical file based on the lab manual contribute to my final Science marks?
Maintaining a neat, accurate, and complete practical file is crucial as it carries direct marks in your internal assessment for the academic year 2025-26. A well-kept file is proof of the practical work you've done. For full marks, ensure every experiment includes the aim, materials required, step-by-step procedure, labelled diagrams, clear observations, and a final conclusion, as these are the key criteria for evaluation.
4. What are some frequently asked viva-voce questions based on the experiments in the Class 6 Science Lab Manual?
Viva-voce questions are asked to test your conceptual understanding of the experiments. For Class 6, some frequently asked questions are:
- What is the function of iodine solution in the starch test?
- Why is a switch important in an electric circuit?
- What is the main difference between a tap root and a fibrous root?
- Can you define solubility and give an example of an insoluble substance in water?
- What is the primary role of petals in a flower?
5. Are diagram-based questions from the lab manual important for the final theory exam as well?
Yes, absolutely. Diagrams from the lab manual are extremely important for your theory exam, not just practicals. You can be asked to draw and label diagrams such as the parts of a flower, an electric circuit, leaf venation, or parts of a seed. These questions can carry significant weightage, often appearing as 3-mark or 5-mark questions.
6. Beyond just performing the experiment, what is the most important concept to learn from the 'Testing for Starch' activity for exams?
The most important thing to learn is the underlying scientific principle. For the starch test, you must understand that iodine solution turns blue-black specifically in the presence of starch. This core concept is more critical than just memorising the steps because it helps you answer application-based or HOTS questions, such as explaining why a potato slice turns blue-black with iodine while a sugar crystal does not.
7. Why is listing precautions for an experiment so important, and can marks be deducted for not mentioning them?
Listing precautions is a vital part of any scientific experiment as it demonstrates your understanding of safety and accuracy. For instance, in an experiment like 'Making an Electric Circuit,' precautions like 'do not touch open ends of wires when the switch is on' are critical. Examiners often deduct marks if precautions are missing, as it is considered a fundamental component of the scientific reporting method.
8. How can the Science Lab Manual be used to prepare for Higher Order Thinking Skills (HOTS) questions?
To prepare for HOTS questions using the lab manual, you must think beyond the given procedure. For each experiment, ask analytical questions like "Why this step?" and "What if I change this?" For example, when studying circuits, ask, "What would happen if I used a plastic scale instead of a copper wire?" Understanding the reasoning behind each step and predicting the outcomes of modifications will build the critical thinking skills needed to answer HOTS questions effectively.











