Teacher interview questions with model answers: PRT, TGT and PGT, subject-wise, with demo lesson tips

Tell me about yourself.

Good morning. I am Meenakshi Iyer from Coimbatore. I did my B.Sc and M.Sc in Physics at PSG College of Arts and Science and my B.Ed from Bharathiar University in 2022. For the last three years I have taught Physics to Classes 9 to 12 at a CBSE school in Tiruppur, where my Class 12 batch last year averaged 78 percent in the board exam. I run the school's science club, which built a working solar water heater for the science exhibition. I am applying for PGT Physics with KVS because I want to teach in a system where the syllabus, the labs and the students' ambition are all at the national level.

The panel checks for your qualifications in order, one result, one activity outside the syllabus, and a reason for this board.

Why did you choose teaching?

In my final year of M.Sc I took tuition for two Class 11 students who were failing physics. One of them had decided physics was not for him; by March he had scored 81 in the school exam and was asking me about ISRO. That changed my plan to sit for a bank exam. I realised I enjoy the moment when a confused face clears more than I enjoy solving the problem myself. Teaching is also a profession where you see the results of your work in the same year, and where I can keep learning my own subject.

One real student, one before-and-after. Avoid noble profession speeches.

What do you know about NEP 2020, and how has it changed your teaching?

NEP 2020 replaces the 10 plus 2 structure with 5 plus 3 plus 3 plus 4, so that the foundational stage covers ages 3 to 8 with a focus on literacy and numeracy, and the secondary stage from Class 9 is multidisciplinary with choice of subjects. For a teacher the changes that matter are competency-based learning instead of rote, a target of mother-tongue or local-language instruction up to at least Grade 5, experiential and art-integrated pedagogy, reduced syllabus to core concepts, continuous assessment through the Holistic Progress Card, and teacher development through 50 hours of CPD a year. In my class it means I now begin Chapter 1 of Class 9 Physics with a project on measuring the school ground rather than with definitions, and my tests have at least one competency-based question that gives a situation rather than asks for a formula.

Name the structure, three or four changes, and one thing you actually did differently. The panel also expects NCF for School Education 2023.

Are you willing to be transferred anywhere in India, and to a residential school?

Yes. I have read the KVS transfer policy, and I know a new teacher can be posted to any Kendriya Vidyalaya, including those in the north-east or at defence stations, with transfer counts and choice stations coming later. My husband works remotely and my parents are in good health, so I have no constraint. For NVS I understand a Jawahar Navodaya Vidyalaya is residential and the teacher lives on campus, takes house-master duties and evening study, and that is part of what makes the system work; I did two years of hostel warden duty at my current school and I am comfortable with it.

The panel checks for a real constraint. Mention the transfer policy and, for NVS, residential duties by name.

How would you teach a Class 1 child who cannot recognise letters by December?

First I would find out what the child can do: whether she recognises her own name, whether she can hear the first sound in a word, whether the problem is vision or attention. Then I would work in ten-minute bursts: sound games with objects from her bag, tracing letters in sand or on a slate, and matching cards with pictures. I would pair her with a buddy for reading time and send home two picture cards a day with a note in the parent's language. The FLN goal under NIPUN Bharat is that she reads with understanding by the end of Grade 3, so December of Grade 1 is a time to intervene, not to label her.

The panel checks that you diagnose first and that you know FLN and NIPUN Bharat.

A child in your Class 3 wets himself in class and the others laugh. What do you do?

I would deal with the child first and the class second. Quietly, I would take him to the washroom with a change of clothes, which the school keeps for exactly this, and tell him that it happens and it is fine. I would ask the class helper to clean up without fuss. Back in class I would not lecture about kindness at that moment, which marks him further; later in the week I would use a story about helping a friend. I would call the parent in the evening, kindly, to check whether this is new, because a sudden change at that age can signal something at home or a medical issue.

Dignity of the child, no public lesson, a call home. The panel checks warmth and procedure together.

How do you teach addition with carrying to a class of 45 with mixed abilities?

With bundles of ten sticks and loose sticks. Every child gets a set, we build 27 and 15 on the desk, and the moment comes when twelve loose sticks have to be bundled into a ten, which is what carrying means. I would show it on the board at the same time with a place-value chart. The fast ones get three-digit sums with the same sticks, the slower ones stay with two-digit until the bundling is automatic, and I move between groups. By the end of the week I would have each child explain carrying to a partner in their own words, because a child who can say it has got it.

A concrete method, differentiation for both ends, and a check. Name a teaching aid you can show in the demo.

TGT Science: how would you teach photosynthesis so that students do not just memorise the equation?

I would start with a question: what does a plant eat? Most Class 7 students say soil and water. Then we do the two-week experiment: two potted plants, one covered with a black bag, with starch tests on a leaf from each using iodine. The pale leaf from the covered plant teaches more than the equation does. Only then do we write carbon dioxide plus water in the presence of sunlight and chlorophyll gives glucose and oxygen, and I connect it to why the school garden faces south and why we do not keep plants in a sealed room. The test question is a situation, a farmer's crop in a cloudy month, not the equation.

Activity first, equation second, a competency-based assessment third. The panel will ask what if the lab has no iodine.

TGT Maths: a Class 8 student says she hates maths and will never need it. How do you respond?

I would not argue in front of the class. Later I would ask her what she wants to do; last year a student said the same and wanted to open a boutique, so we worked out fabric costs, GST and profit on one dress, which is Chapter 8 of the Class 8 NCERT. Hating maths usually means a gap from Class 5 or 6, so I would give her a short diagnostic on fractions and decimals and fill that gap in ten-minute sessions before school. I would also move her to a seat where she can see the board and pair her with a patient partner, not the topper. Confidence in maths is rebuilt with small wins, not motivation speeches.

The panel checks for a real student, a diagnostic and an NCERT link rather than a pep talk.

PGT Physics: why is the sky blue, and how would you explain it to Class 12?

Because of Rayleigh scattering: the intensity of light scattered by particles much smaller than its wavelength varies as one over the fourth power of wavelength, so blue light at about 450 nanometres is scattered roughly five times more than red at about 700. That scattered blue reaches our eyes from every direction. At sunset the path through the atmosphere is longer, blue is scattered out of the direct beam, and the sun looks red. In class I would first ask why the sun itself does not look blue, which forces the direct versus scattered light distinction, and then show the fourth-power ratio as a two-line calculation, which is where the Class 12 understanding actually lives.

The panel checks the inverse fourth-power law and that you can turn it into one calculation and one question for students.

PGT Physics: a student asks why we cannot have a motor with 100 percent efficiency. What do you say?

I would separate two things. Energy is conserved, so the losses do not vanish: they become heat in the windings through resistance, eddy currents and hysteresis in the core, and friction and air drag at the shaft. A 100 percent efficient motor would need zero resistance, which at room temperature no conductor has, and zero friction. Then I would connect it to the second law: even a heat engine with no friction has a ceiling, the Carnot efficiency, set by the temperatures it runs between, which is why power plants are at about 35 to 40 percent. For a Class 12 student the useful message is that efficiency is engineering against named losses, not a mystery.

Name the losses, then the second-law point. The panel checks that you do not confuse motor losses with Carnot.

PGT Chemistry: why is the first ionisation enthalpy of oxygen lower than that of nitrogen?

Nitrogen's electron configuration ends in 2p3, a half-filled subshell with one electron in each p orbital, which is extra stable because of exchange energy and symmetry. Oxygen's ends in 2p4, so one p orbital holds two electrons and their mutual repulsion makes the fourth electron easier to remove, even though oxygen has a higher nuclear charge. Students memorise that ionisation enthalpy increases across a period and get this exception wrong, so in class I draw the orbital diagrams side by side and ask which electron is being removed, from where, and what it leaves behind. The same logic explains beryllium versus boron with 2s2 and 2p1.

The panel checks that you reason from orbital diagrams and can produce the second example without prompting.

PGT Chemistry: how do you make the Class 12 organic chemistry mechanisms less frightening?

By teaching students to follow electrons rather than memorise names. I start with three rules: nucleophiles go to positive centres, arrows show electron pairs moving, and every step must balance charge. Then SN1 and SN2 are the same question, does the leaving group go first or at the same time, answered by the substrate, tertiary or primary, and the solvent. I use a table on the wall with substrate, nucleophile, solvent and the expected mechanism, and students fill it from problems rather than from me. For the boards I give one reaction a day as a warm-up for the last three months, because recall needs spacing, not a last-week marathon.

A method, an example and an assessment habit. The panel will ask you to draw an SN2 transition state.

PGT Maths: how would you introduce the derivative to Class 11 without starting from the limit definition?

I would start with speed. A car travels 60 kilometres in an hour: that is average speed. What is its speed at exactly 2:15 p.m.? Students see that they need a smaller interval, and the whole class arrives at the idea of shrinking the interval before they see a limit symbol. Then I plot distance against time, draw the chord between two points, and bring the points together on the board until the chord becomes the tangent. Only then do I write the limit definition, and they recognise it as what they just did. Within the same period I compute the derivative of x squared from first principles, so the abstraction is tied to a number they trust.

The panel checks that your motivation leads to the formal definition in the same period, not away from it.

PGT Maths: a bright Class 12 student asks why we cannot divide by zero. Answer as you would to her.

Division asks a question: what number multiplied by the divisor gives the dividend? Six divided by two asks what times two is six, and the answer is three. Six divided by zero asks what times zero is six, and nothing works, because anything times zero is zero. Zero divided by zero is worse: every number works, so there is no single answer. In calculus, when she sees zero over zero in a limit, that is exactly why the limit, not the fraction, is the object of study, and why the derivative needed limits in Class 11. I would then give her the limit of sin x over x as x goes to zero and let her discover it is one.

Reasoning from the definition of division, then a bridge to limits. The panel checks that you can extend a bright student.

PGT Computer Science: what is the difference between a list and a tuple in Python, and why does it matter for students?

A list is mutable, a tuple is not: you can append to, delete from or reassign elements of a list, but a tuple is fixed once created. That is why a tuple can be a dictionary key and a list cannot, and why tuples are slightly faster and safer for data that must not change, like coordinates or a record. Students in Class 11 confuse the two because the syntax differs only in brackets, so in class I give them a program that tries to change both and let the TypeError teach the rule. Then we discuss where each belongs in their project, which is the CBSE practical's real test.

Mutability, the dictionary-key consequence, and a classroom demonstration. The panel may ask about a tuple containing a list.

PGT Computer Science: how do you teach a Class 12 class where half have a laptop at home and half do not?

By making the lab period the main period, not the homework. I run two students per machine with roles that swap every ten minutes, driver and navigator, so everyone types. Theory is taught on paper first: dry runs of loops and tracing variables in a table, which needs no machine and is also what the board paper tests. For those without a laptop I keep the lab open one lunch break a week and use a free online editor on a phone for small programs. The project is done in pairs that mix the two halves. Access is the teacher's problem to solve, not the student's deficiency.

Lab-first, dry runs on paper, pairing and extra access. The panel checks equity thinking, not just method.

You notice bruises on a Class 6 student and she becomes quiet when asked. What do you do?

I would not interrogate her in class or in front of others. I would speak to her alone in a visible place such as the library, ask open questions and listen without promising to keep it secret, because I cannot. Then I would report the same day in writing to the principal and the school's child protection or POCSO committee, which every school is required to have, and record what I saw and what she said in her words. The decision to involve Childline 1098 or the police under the POCSO Act is the school's, with my input, not mine alone. I would keep treating her normally in class so that she does not feel marked.

The panel checks: do not promise secrecy, report in writing the same day, know POCSO and 1098.

A parent comes in angry because his son scored 42 in your test and says you are targeting him. How do you handle it?

I would ask him to sit, listen fully without interrupting, and then open the answer sheet with him, question by question, showing where the marks went and why. Usually the anger drops when the parent sees the child left two questions blank. Then I would show the plan: what topics the boy needs, the extra practice sheet, and a date three weeks away to review together. I would not criticise the child or the parent, and I would not change the marks. If the parent stayed abusive I would end the meeting politely and involve the principal. Most angry parents are frightened parents.

Listen, show evidence, give a plan, hold the line on marks, escalate only if abuse continues.

How do you include a child with a learning disability or a wheelchair user in your class?

Inclusion begins with the seating plan and the timetable, not with a special class. For a child with dyslexia I would give instructions orally as well as in writing, allow extra time and a scribe as CBSE permits, and assess understanding by asking rather than only by written work. For a wheelchair user I would make sure the lab bench and the group work are on the ground floor and that she has a role in every activity, not a seat at the edge. I would work with the school's special educator and the parents on an individual plan and read the child's assessment report rather than guess. The Rights of Persons with Disabilities Act 2016 and NEP 2020 both require this; the panel wants to see that I would do it anyway.

Specific adjustments for a named disability, CBSE exemptions, the special educator, and the law in one line.