Best Science Experiments with Explanation for those who Love Science
Science Experiments for CBSE Class 5 to 8
FAQs on Science Experiments for Students
1. What types of questions are typically asked from the 'Science Experiments' section in CBSE exams?
In exams, questions on science experiments usually focus on four main parts: the aim, the procedure, the observation, and the conclusion. You may also be asked to list necessary materials, draw a labelled diagram, or state the required safety precautions.
2. How should I structure my answer for a 5-mark question about an experiment to get full marks?
For a 5-mark question, a structured answer is key to scoring full marks. A good format to follow is:
- Aim: Clearly state the purpose of the experiment.
- Materials Required: List all the apparatus and chemicals needed.
- Procedure: Write the steps in the correct order.
- Observation and Inference: Note down what happened and explain the scientific reason behind it.
- Precautions: Mention at least two relevant safety measures.
Breaking your answer down like this often aligns with the board's marking scheme.
3. What are some common mistakes to avoid when writing about science experiments in an exam?
To score well, avoid these common mistakes: forgetting to draw a neat, labelled diagram when needed, writing an unclear aim, confusing observation with conclusion, and not mentioning any safety precautions. Also, be sure to use precise scientific terms instead of vague language.
4. How important is a labelled diagram for experiment-based questions?
A neat and correctly labelled diagram is extremely important. It often carries specific marks (usually 1-2 marks) and can explain the experimental setup more effectively than words. Always use a pencil and label all the key parts clearly to ensure you get credited for your work.
5. Why is it important to state the 'aim' and 'precautions' for an experiment, even if the question only asks for the procedure?
Stating the aim shows the examiner that you understand the experiment's goal. Mentioning precautions proves you have a thorough and safe scientific approach. In many board marking schemes, these sections have dedicated marks, so including them is a simple way to secure a better score.
6. How does understanding the 'control' in an experiment help answer Higher Order Thinking Skills (HOTS) questions?
Understanding the role of a control group is vital for HOTS questions. These questions test your critical thinking by asking you to analyse an experiment's design, identify flaws, or explain why a result might be invalid. A control is the baseline for comparison, proving that the variable you're testing is what caused the outcome.
7. What is the difference between an 'observation' and an 'inference', and why does it matter for scoring well?
An observation is what you directly sense or measure (e.g., 'the solution turned blue'). An inference is the scientific conclusion you draw from that observation (e.g., 'therefore, the substance is a base'). Keeping them separate is crucial for marks because it demonstrates you can differentiate between raw data and the scientific interpretation.
8. For the 2025-26 session, should students expect new types of questions related to experiments?
Yes, based on the latest CBSE trends for the 2025-26 academic year, there is a growing focus on competency-based questions. For experiments, this means you might face scenario-based problems where you must identify the hypothesis, variables, and potential errors, instead of just reciting a memorised procedure from a textbook.











