Prepare viva from the practical file first
- List the experiments completed in your practical file.
- For each experiment, learn aim, apparatus, principle, formula, observation, and one common precaution.
- Practise answering in short sentences, not long speeches.
- Revise diagrams or circuit/labelling parts where needed.
- Ask a classmate to ask five random viva questions.
A practical viva usually feels scary because questions can come suddenly. The preparation becomes easier when you revise the experiment like a small story: what you did, why you did it, what you observed, and what precaution mattered.
Start from your own practical file
Your practical file shows what you actually performed or recorded. Use it as the first revision source instead of collecting random viva questions from everywhere.
Mark experiments that feel weak. Give extra time to the ones where apparatus, formula, or observation still feels confusing.
- Aim
- Principle
- Apparatus
- Observation
- Result
- Precaution
Learn short answers
Viva answers should be clear and direct. Do not try to give a textbook paragraph for every question.
If the teacher asks why a step is done, answer the reason. If the teacher asks what an apparatus does, answer the function.
- One sentence for aim
- One sentence for principle
- One key precaution
- One result statement
Prepare common why questions
Many viva questions ask why a step, precaution, or condition is needed. These questions test understanding, not only memory.
For each experiment, write two why questions in your notebook. This is usually more useful than memorising a long list.
- Why this apparatus?
- Why this precaution?
- Why this formula?
- Why this observation changes?
Revise diagrams, circuits, and labels
If your practical subject includes diagrams, circuits, slides, specimens, or apparatus labels, revise them visually.
Cover the label and recall it. Then explain its function in simple words.
- Label recall
- Function of each part
- Direction of current or ray if relevant
- Common wrong label
Practise speaking without rushing
Some students know the answer but speak too fast or too softly. Practise a normal pace.
If you do not know an answer, do not invent. Say what you know clearly and wait for the next question.
- Pause before answering
- Use simple words
- Keep eye contact normal
- Avoid guessing official-looking facts
Use the last day for weak experiments
Do not spend the last day decorating files. Revise weak experiments, formulas, observations, and precautions.
Keep your file, instruments, and required materials ready according to school instructions.
- Weak experiment list
- Formula list
- Precaution list
- File and material check
FAQs
How long should viva answers be?
Usually short and direct answers are better. Answer exactly what is asked, then add one reason if needed.
Should parents conduct viva practice at home?
They can ask simple questions from the file, but the student should answer in their own words instead of memorising a script.