From our research
What this interview looks like
In CBSE Class 12, practical subjects carry a 30-mark practical examination in February or March, conducted at the school by an external examiner appointed by the Board, with the school's own teacher as internal examiner. The student performs one or two experiments or tasks, submits the record file and the investigatory project, and then faces a short viva voce of three to seven minutes that typically carries 3 to 5 of the 30 marks in physics, chemistry and biology, 3 marks in computer science and informatics practices, and 5 marks in geography and psychology. In Class 12 accountancy, business studies and economics, the project work is a 20-mark component that includes a project file, a viva voce and, in accountancy, a written test. In Class 10, science practicals and the mathematics lab are part of the 20-mark internal assessment, and skill subjects such as Artificial Intelligence (417) and Information Technology (402) have a 50-mark practical with file, demonstration and viva. The viva is where the examiner finds out whether the student understood the experiment or project or only copied the record: the examiner asks the aim and principle, the formula or law, the observations and the value obtained, precautions and sources of error, and one question on the project that only its author could answer. ISC and most state boards follow the same shape with their own mark splits. ExamPilot compresses this into a ten-minute viva with one external examiner: a one-minute introduction, seven minutes of concept and experiment questions that escalate when you answer correctly and give one hint when you are stuck, one question on your record or project, and a formal close.
How it is weighted
In CBSE, accountancy, business studies and economics have a 20-mark project component out of 100: accountancy splits it into a project file, a one-hour written test and a viva of about 4 marks; economics gives the viva the largest share at 8 marks; business studies assesses the file, presentation and viva. Geography and psychology have a 30-mark practical examination in which the viva typically carries 5 marks alongside the practical record and the written or performed practical. In all of these the examiner uses the viva to decide whether the project is the student's own work.
Who this is for
Class 12 students submitting the CBSE project in accountancy, business studies or economics, or sitting the practical examination in geography or psychology, each of which includes a viva voce with an external or internal examiner. ISC and state-board students doing comparable project work can use the same preparation.
The panel focuses on
- Explaining the project's question and conclusion in your own words, with one specific number, table or ratio from the file
- Connecting the project to the syllabus concept it illustrates: a ratio, a cash flow classification, a principle of management, a macro aggregate, a statistical measure
- Knowing where your data came from, how it was collected and what its limitations are
- For geography and psychology, explaining the method you performed: Spearman's rank correlation, a cross-section, a test's scoring, an experiment's variables
- Answering a what-if about your own project: if sales fell, if the policy reversed, if the sample were larger
- Presenting the file confidently and admitting what you do not know without inventing
Step 1
Pick your subject
The expert on the panel probes these areas at the level of this post. Optional here; you can choose during setup.
Step 2
Choose how you want to be interviewed
1:1 interview
One interviewer runs every round and adapts the focus as you go. Lower pressure; ideal for a first attempt.
Mr. Devendra Pratap Singh
Subject expert
Panel interview · 2 members
Most realisticEach member leads their own round and hands over to the next. They hear each other, so a weak answer will be revisited.
Mr. Devendra Pratap Singh
Subject expert
Mrs. Sunita Raghavan
Subject expert
What to expect
4 rounds · 10 minutes
A ten-minute oral examination of the kind held at the end of a laboratory course or project: school board practicals, engineering lab and project vivas, pharmacy and nursing practicals, dissertation and thesis defences. One external examiner, sometimes seated with the internal teacher, asks the candidate what they did, why it works, what they observed and what could go wrong, then looks at the record file or project and asks one question that tests whether the work is the candidate's own. The examiner escalates when answers are correct, gives one hint when the candidate is stuck, and never teaches during the viva.
- Round 1
Introduction
· 1:00Settle the candidate and establish exactly which experiment, practical, project or thesis the viva will be about, so that the subject questions can be anchored to work the candidate actually did.
Mr. Devendra Pratap Singh1–2 questionsup to 1 follow-up each - Round 2
Viva on concepts and experiments
· 7:00Test whether the candidate understands the principle behind the experiment or project they did, can describe the procedure and observations accurately, knows the precautions and sources of error, and can reason about a change in conditions. Separate genuine understanding from a memorised record file.
Mr. Devendra Pratap Singh4–6 questionsup to 2 follow-ups each - Round 3
Record file or project
· 1:00Check that the record file, activity or project is the candidate's own work and that they understand it: why they chose it, what the data or result was, what went wrong and what they would improve.
Mr. Devendra Pratap Singh1–1 questionsup to 1 follow-up each - Round 4
Closing
· 1:00End the viva courteously and formally, as an external examiner does, without feedback, marks or any hint about the result.
Mr. Devendra Pratap Singh1–1 questions
Sample questions
School practical viva Class 12 Commerce / Humanities interview questions
Questions panels commonly ask in the School practical viva Class 12 Commerce / Humanities interview, with what a strong answer covers. Practise them aloud with the AI panel.
- Accountancy project
Your accountancy project analyses a company's financial statements. Which ratio did you find most telling, and what does it show about the company?
What a strong answer covers
Names a ratio such as current ratio or debt-equity ratio, the actual value from the project, and a clear interpretation about liquidity or solvency. Avoid quoting the formula without the number or meaning.
- Accountancy
In your cash flow statement, why is depreciation added back under operating activities?
What a strong answer covers
Depreciation is a non-cash expense that reduces profit but not cash, so it is added back to arrive at cash from operations. Avoid saying depreciation is cash income.
- Business Studies project
Your business studies project was on marketing of a product. Which element of the marketing mix did the company emphasise, and why?
What a strong answer covers
Identifies which of product, price, place or promotion the company emphasised, with evidence from the project such as an advertisement, pricing or distribution choice, and why it suits the target customers and competition. Avoid listing all four elements without analysis.
- Business Studies
Which principle of management by Fayol did you see applied in the business you studied?
What a strong answer covers
Names one principle such as unity of command, division of work or discipline, and gives a specific example from the business studied, explaining what would go wrong if it were ignored. Avoid listing all fourteen principles without applying any.
- Economics project
Your economics project is on inflation. What data did you use, and what is one limitation of it?
What a strong answer covers
Identifies the data source, such as a price index or local market survey, and a limitation such as coverage or time period. Avoid inventing data sources.
- Economics
Your economics project discusses India's national income. Explain the difference between GDP and GNP, and which one your data actually used.
What a strong answer covers
GDP measures the value of final goods and services produced within the country's borders, while GNP adds net factor income from abroad. A strong answer identifies which measure the project's data source reports and why the difference matters for India. Avoid confusing the two or inventing figures.
- Geography practical
In your geography practical, how did you calculate Spearman's rank correlation, and what does your result mean?
What a strong answer covers
Explains ranking both variables, finding the difference in ranks for each pair, squaring and summing them, applying the formula, and interpreting the result as positive, negative or weak correlation in the context of the data. Avoid arithmetic errors or claiming correlation proves causation.
- Psychology practical
In your psychology practical, what was the independent variable, and how did you control extraneous variables?
What a strong answer covers
Names the independent variable that was changed and the dependent variable that was measured, and explains how extraneous variables were controlled, for example standard instructions, a quiet room, and the same time limit for every participant. Avoid mixing up the two variables.
- What-if reasoning
If sales in your project company had fallen by half, what would change in your conclusions?
What a strong answer covers
Applies the project's concepts to the new scenario, for example how a sharp fall in sales would affect profit ratios, cash flow, marketing decisions or employment, and what the company might do. Shows the student understands the project rather than memorising it. Avoid repeating the original conclusion unchanged.
Reading is not rehearsing. Answer these out loud to an AI School practical viva Class 12 Commerce / Humanities panel that follows up like the real one.
Practise these questionsMeet the panel
Your AI interviewers
Distinct personas, voices and questioning styles, briefed on this post.
Mr. Devendra Pratap Singh
ChairSubject expert
External examiner for board practicals and projects; PGT and examination in-charge, CBSE senior secondary school (Lucknow)
Brisk, fair, good-humoured, probes the record file hard.
Male voice · 3 languages
Mrs. Sunita Raghavan
Subject expert
External examiner for board practicals; senior PGT and head of science, CBSE senior secondary school (Chennai)
Warm but exact, patient with nerves, intolerant of memorised answers.
Female voice · 3 languages
Languages
Answer in the language you think in
The panel asks in your chosen language. Switch mid-answer if you like.
- English
- हिंदीHindi
- Hinglish (Hindi + English)Hinglish
How scoring works
A report you can act on
Every round is scored on the rubric
Each interviewer scores only the criteria their round covers. Weights add up to your overall score out of 100.
Only what you actually said counts
Feedback quotes your own answers. Rounds you skip show as “Not assessed” rather than a zero.
Communication is always measured
Fluency, clarity, confidence and structure are tracked across the whole interview, in any language.
Pass mark, then a plan
You see the pass mark for this interview, your gaps, and the courses that close them fastest.
Scored on
- Conceptual understanding40%
States the principle, law or formula behind the experiment or project correctly and in their own words; explains why the method works rather than only what the steps are; handles a why or what-if question with reasoning; does not confuse related concepts or recite a definition that does not answer the question.
- Experimental procedure & observation30%
Describes the actual procedure, apparatus or tools, readings or data and how they were processed; knows the units, the expected result and the order of magnitude they obtained; names sources of error and the precautions that address them; for a project, knows the data, method and limitations of their own work.
- Clarity of explanation20%
Answers the question actually asked in short, ordered sentences; uses correct technical terms and units; can explain the same idea more simply when asked; does not ramble or bury the answer in unrelated recall.
- Confidence & honesty10%
Speaks steadily, holds a correct answer when gently challenged, corrects themselves when shown an error, and says I am not sure rather than guessing; recovers after a hint instead of freezing.
Pass mark 50 / 100 · Practical / project viva voce with an external examiner
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