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Answer Writing for CBSE Class 10: How Marks Are Awarded, with Model Answers
CBSE examiners mark every Class 10 answer against a marking scheme of value points and step marks. They do not judge an overall impression. In Maths, each correct step earns part of the marks, so the working counts, but one-mark MCQs have no part marks. In Science, a diagram and its labels carry separate marks, and a numerical needs the formula, the substitution and the answer with its unit. Social Science answers are marked point by point within word limits of 40, 60, 100 and 120 words. English writing tasks are marked on format, content, organisation and accuracy. The best CBSE Class 10 answer writing tips all come down to one idea: make every value point easy for the examiner to find.
This guide is part of our Class 10 home tutors in Gurgaon series for CBSE families. It explains the instructions CBSE gives its examiners and the 2026–27 paper designs. It then goes subject by subject through Maths, Science, Social Science and English, with a section on competency-based questions. It closes with six model answers showing full-mark and partial-mark versions side by side. The model answers are written by our Home Tutors Team. The mark splits are our estimates, based on the patterns in CBSE's published marking schemes. They are not official CBSE answers.
How CBSE examiners mark a Class 10 answer
Examiners follow the marking scheme for each question paper, and the scheme lists the value points and steps that earn marks. After the results, CBSE publishes these schemes on its marking scheme page. Each one opens with general instructions to evaluators. The 2026 Class 10 schemes include these instructions, which matter most to students:
| Instruction to examiners (2026 Class 10 marking schemes) | What it means for your answers |
|---|---|
| The scheme "carries only suggested value points"; students "can have their own expression and if the expression is correct, the due marks should be awarded" | You don't need to reproduce textbook wording. You need the right points, clearly stated. |
| In competency-based questions, "even if reply is not from Marking Scheme but correct competency is enumerated by the candidate, due marks should be awarded" | A correct reasoned answer to a case or application question earns marks even if it differs from the scheme. |
| "No marks to be deducted for the cumulative effect of an error. It should be penalized only once." | An early slip doesn't cost every later step. Keep going and show your method. |
| If a student attempts an extra question, the answer "deserving more marks should be retained" and the other marked "Extra Question" | Answering both options of an internal choice won't cost marks, but it wastes time. |
| "Please do not hesitate to award full marks if the answer deserves it." | Full marks are possible in every question type, including long answers. |
| If a question has parts, marks are awarded for each part separately | Label parts exactly as the paper does, for example 28.1, 28.2 or (A), (B). |
Two more rules come from the 2026–27 sample paper marking schemes. In Maths, the Section A MCQs carry "no part marks". In English, "if more than one option is mentioned in the answer of multiple choice questions, then no marks" are awarded. Choose one option and write it clearly.
The 2026–27 papers at a glance
CBSE's 2026–27 sample papers carry the note that there is "no change in the Question Paper Design and Assessment Pattern for Academic Session 2026-27". Every main paper is 80 marks and 3 hours, and internal assessment adds the other 20 marks. You can download all of them from CBSE's Class X sample question papers 2026–27 page.
| Paper | Structure (2026–27 sample paper) | What answer writing needs |
|---|---|---|
| Maths Standard (041) and Basic (241) | 38 questions in five sections: A 18 MCQs plus 2 assertion–reason (1 mark each); B five 2-mark; C six 3-mark; D four 5-mark; E three 4-mark case studies. No calculators. | Steps, figures, final answers with units |
| Science (086) | 39 questions in three sections: Biology (Q1–16), Chemistry (Q17–29), Physics (Q30–39). Competency weightage: knowledge and understanding 50%, application 30%, analysis, evaluation and creation 20%. | Labelled diagrams, balanced equations, numericals with sign convention and units |
| Social Science (087) | 38 questions in four 20-mark sections: History, Geography, Political Science, Economics. 20 one-mark MCQs; four 2-mark (40 words); five 3-mark (60 words); four 5-mark (120 words); three 4-mark case-based (100 words); map 5 marks. | Separate points within word limits; accurate map work |
| English Language and Literature (184) | 11 questions: Reading 20 marks; Grammar and Writing 20; Literature 40. Letter and analytical paragraph about 100–120 words; literature answers 40–50 words (3 marks) and 100–120 words (6 marks). | Format, organisation, direct answers backed by the text |
Maths: step marks and working
In Maths, marks are attached to steps, not just to the final answer. The 2026–27 sample paper marking scheme splits a 3-mark coordinate geometry question into four parts: 1 mark for applying the section formula, ½ for setting the y-coordinate to zero, ½ for the ratio and 1 for the coordinates. A student who makes a slip in the last line still keeps 2 of the 3 marks. A student who writes only the final answer gives the examiner no steps to award.
What earns marks in Maths
- The formula or result you are using, written before you substitute. Examples are the section formula, the quadratic formula, Sn = n/2 [2a + (n − 1)d] and the trigonometric ratios in heights and distances.
- Figures where the scheme expects them. In the 2026–27 sample paper, "Correct figure" earns 1 of the 5 marks in each heights-and-distances question. In the 2026 board scheme (paper 30/1/1), the Basic Proportionality Theorem question gave 1 mark for the statement, 2 for "given, to prove, construction and figure" and 2 for the proof.
- Reasons in geometry and proofs. The scheme writes reasons such as "(AA criterion)" and "(Alternate interior angles)" next to steps. Write them too.
- Rejecting impossible values. In the sample paper's 5-mark quadratic word problem, the scheme shows "Rejecting x = 37" before the final ½ marks for the pool's length and breadth.
- A closing sentence with units, for example "Hence, the length of the longest ruler is 75 cm." The sample scheme ends its answers this way.
- Proof by contradiction in three parts: the assumption, the contradiction, and the conclusion. The sample scheme gives 1 mark to each in its irrationality question.
In Section A only the correct option counts, so check the option letter before moving on. Take π = 22/7 unless the question says otherwise. For formula recall, keep our CBSE Class 10 Maths formula sheet handy. Our guide on how to score 95+ in CBSE Class 10 Maths covers speed and accuracy across the whole paper.
From our tutors: the Maths marks we most often see lost are not from hard questions. They come from answers that jump from the question to the final number in two lines. When we ask students to write one line per step, with the formula first, their marks on 3- and 5-mark questions usually rise before their Maths knowledge has changed at all.
Science: diagrams, labels and numericals
Science marking gives separate marks for explanations, diagrams and numerical steps.
Diagrams and labels
In the 2026 board marking scheme (paper 31/1/1), one 3-mark diagram question gives "Diagram – 1 mark" and "Labelling – 2 marks". A 2-mark question gives 1 mark for the diagram and ½ for each of two named labels. In other words, the labels often carry as many marks as the drawing, or more. In the 2026–27 sample paper, the diagram part of the 5-mark eye or dispersion question is worth 2 marks.
- Draw with a pencil, use a ruler for straight lines, and keep label lines straight and ending exactly on the part.
- Put arrows on rays and on the direction of current or blood flow.
- Use the names in your NCERT textbook, for example "pollen tube", not "tube".
Numericals
The 2026–27 sample scheme for the concave lens question gives 1 mark each for the type of lens, the image distance and the focal length, working with the sign convention throughout. The 2026 board scheme accepted two routes for one lens question: reasoning from the object being at 2F, or the lens formula. So a correct method that is not the scheme's first method still earns the marks. For every numerical, write:
- The data with signs, for example u = −30 cm, f = +20 cm.
- The formula.
- The substitution.
- The answer with its unit, and a statement if the question asks for nature, position or direction.
Chemistry and Biology
Our tutors' advice: write chemical equations balanced, with conditions over the arrow where they matter; answer "give reasons" with the cause, not a restatement; and in Biology use exact terms such as "implantation" or "villi" and explain processes in order.
Some Science topics are taught but assessed only at school, not in the board paper. Our CBSE Class 10 Science syllabus 2026–27 guide lists them.
Social Science: points, word limits and maps
In Social Science the scheme counts points. In the 2026–27 sample marking scheme, a 3-mark answer is marked "(Any 3 points)" and a 5-mark answer "(Any 5 points)". Many answers add "Or any other relevant point", so a correct point that is not on the list still counts.
| Question type | Word limit (2026–27 sample paper) | How to structure it |
|---|---|---|
| 2 marks (very short answer) | Not more than 40 words | Two points, or one point with an explanation, as the question asks |
| 3 marks (short answer) | Not more than 60 words | Three numbered points, one or two sentences each |
| 4 marks (case-based, three sub-questions) | Not more than 100 words | Answer each sub-question separately, numbered as in the paper (for example 28.1, 28.2, 28.3) |
| 5 marks (long answer) | Not more than 120 words | Five numbered points, each with a short heading and one explanatory sentence |
| Map (5 marks) | — | 2 marks in History (Q9) and 3 in Geography (Q19) in the sample paper; locate and label neatly |
The sample scheme's own long answers use a short heading plus a sentence, for example "Independent Judiciary – The Supreme Court acts as an impartial authority…". Five separate ideas earn five marks; one idea written five ways earns one.
For maps, the 2026–27 curriculum says items listed for "locating and labelling may also be given for identification". So learn each map item both ways: be able to mark it on a blank map and to name it when it is marked for you. Use a dot or a symbol exactly on the place, and write the name clearly beside it.
English: format, content, organisation and accuracy
English writing and literature answers are marked with rubrics, and the 2026–27 sample marking scheme prints them:
| Task | Length | Marking rubric (2026–27 sample scheme) |
|---|---|---|
| Letter (5 marks) | About 120 words | Format 1, Content 2, Organisation of ideas 1, Accuracy 1 |
| Analytical paragraph (5 marks) | About 100–120 words | Content 2, Organisation of ideas 2, Accuracy 1 |
| Literature, 3 marks | About 40–50 words | Content 2, Expression 1; accuracy: up to 1 mark deducted from the overall |
| Literature, 6 marks | About 100–120 words | Content 3, Expression 2, Accuracy 1 |
Format is a whole mark in a letter, so use one standard layout every time: sender's address, date, receiver, subject, salutation, body, complimentary close, name. Organisation carries 2 marks in an analytical paragraph, so open with a topic sentence, take the points in order and conclude. In literature, answer the question in the first sentence, then support it from the text; the sample questions ask you to analyse, compare and evaluate, which a plot summary does not do.
Competency-based questions
CBSE's 2026–27 Secondary curriculum says that "approximately 50% of the questions are competency-focused": case-based, source-based, integrated, data-interpretation, situational and application-oriented questions. These are the questions where examiners are told to credit a correct competency even when the answer differs from the scheme.
- Use the case. If the question gives a table, a passage or a situation, your answer should use its data or details. A textbook definition that ignores the case rarely earns full marks.
- Name the concept, then apply it. For example: "This is the heating effect of current: the power is P = V²/R, so…"
- Match the verb. CBSE's Science curriculum links verbs to competencies. "State", "name" and "define" test knowledge. "Calculate", "explain" and "distinguish" test application. "Interpret", "analyse", "compare" and "evaluate" test higher skills. An "evaluate" question needs a judgement with reasons.
- Keep 1-mark sub-parts short; show working in 2-mark sub-parts.
Six model answers: full marks vs partial marks
Each model shows a full-mark answer and a typical partial answer. All answers are written by the Ajay Vatsyayan Classes Home Tutors Team. The mark splits are our estimates, based on the patterns in CBSE's 2026 board and 2026–27 sample marking schemes. Every calculation was checked.
Model 1: Maths, 3 marks (coordinate geometry)
Find the ratio in which the x-axis divides the line segment joining A(2, −3) and B(5, 6). Also find the point of division.
Full-mark answer (3/3):
Let the x-axis divide AB at P(x, 0) in the ratio k : 1.
By the section formula, P = ((5k + 2)/(k + 1), (6k − 3)/(k + 1)). [1]
P lies on the x-axis, so (6k − 3)/(k + 1) = 0. [½]
6k − 3 = 0, so k = 1/2. The ratio is 1 : 2. [½]
x = (5 × ½ + 2)/(½ + 1) = (9/2) ÷ (3/2) = 3. Hence the point of division is (3, 0). [1]
Partial answer (2/3): the same first three steps, then "x = (2 × 5 + 1 × 2)/3 = 4, so the point is (4, 0)".
Where the mark went: the student swapped the weights. For the ratio 1 : 2, x = (1 × 5 + 2 × 2)/3 = 3. Because the earlier steps were written out, only the last mark was lost.
Model 2: Maths, 5 marks (heights and distances)
From the top of a building 60 m high, the angles of depression of the top and the bottom of a tower are 30° and 60°. Find the height of the tower.
Full-mark answer (5/5):
Figure: building AB = 60 m with A at the top; tower CD with C at the top and D at the foot, on the same level as B; CE drawn perpendicular to AB, so CE = BD and BE = CD. The angles of depression give ∠ADB = 60° and ∠ACE = 30° (alternate angles). [Figure: 1]
In right △ABD: tan 60° = AB/BD, so √3 = 60/BD and BD = 60/√3 = 20√3 m. [1 + ½]
CE = BD = 20√3 m. In right △AEC: tan 30° = AE/CE, so 1/√3 = AE/(20√3) and AE = 20 m. [1 + ½]
Height of the tower CD = BE = AB − AE = 60 − 20 = 40 m. Hence, the tower is 40 m high. [1]
Partial answer (3/5): no figure; BD = 20√3 m and AE = 20 m found correctly; final line "height of tower = 20 m".
Where the marks went: 1 for the missing figure and 1 for the final answer: AE is the difference in heights, not the tower. A labelled figure shows that CD = AB − AE and prevents this.
Model 3: Science, 3 marks (lens numerical)
An object is placed 30 cm in front of a convex lens of focal length 20 cm. Find the position of the image and its magnification, and state the nature of the image.
Full-mark answer (3/3):
Using the New Cartesian sign convention: u = −30 cm, f = +20 cm.
Lens formula: 1/v − 1/u = 1/f. [½]
1/v = 1/f + 1/u = 1/20 + 1/(−30) = (3 − 2)/60 = 1/60, so v = +60 cm. The image is 60 cm from the lens, on the other side. [1]
Magnification m = v/u = 60/(−30) = −2. [½]
Nature: real, inverted and magnified (twice the size of the object). [1]
Partial answer (about 1/3): takes u = +30 cm, gets 1/v = 1/20 + 1/30, so v = 12 cm; then m = 12/30 = 0.4; "image is virtual, erect and diminished".
Where the marks went: the sign of u was wrong, so v and the nature are wrong. The formula still earns ½. Under CBSE's instruction that an error is "penalized only once", an examiner may also give the method mark for magnification worked correctly from the student's own v. Writing the data with signs before substituting is the fix.
Model 4: Science, 2 marks (labelled diagram)
Draw a labelled diagram to show the dispersion of white light by a glass prism.
What a full-mark diagram shows (2/2):
- A triangular prism drawn with a ruler, labelled "glass prism". [diagram: 1, with the rays below]
- A single incident ray labelled "white light", bending at the first face towards the base.
- A spread of colours leaving the second face, with red at the top (least deviated) and violet at the bottom (most deviated), labelled on a screen as the spectrum (VIBGYOR, violet at the bottom). [labels: ½ + ½]
Partial diagram (1/2): a neat prism and rays, but the colours are unlabelled, or red and violet are the wrong way round.
Where the mark went: the labels. CBSE's 2026–27 sample scheme confirms that red deviates least. Learning why (the longest wavelength bends least) means the order is never a guess.
Model 5: Social Science, 3 marks (60 words)
"The focus on caste in politics can sometimes give an impression that elections are all about caste and nothing else. However, that is far from true." Analyse this statement by giving three valid arguments. (Question from CBSE's 2026–27 sample paper, Q26.)
Full-mark answer (3/3, 59 words):
1. No constituency has a clear majority of one caste, so every party must win the trust of more than one caste and community.
2. No party gets all the votes of a caste; voters of one caste often support different parties.
3. Ruling parties and sitting MPs or MLAs often lose elections, which could not happen if caste alone decided votes.
Partial answer (1/3): "Elections are not only about caste. 1. Voters also look at the work done by the government. 2. People also vote on the basis of development work in their area. But caste still matters a lot in Indian politics."
Where the marks went: points 1 and 2 are the same idea (performance and development), so they count once. The last sentence argues the other way. Three different arguments, each in its own sentence, would have earned all 3 marks.
Model 6: English literature, 3 marks (40–50 words)
Why did Lencho call the post office employees "a bunch of crooks"? (A Letter to God)
Full-mark answer (3/3, 49 words):
Lencho had complete faith that God had sent the money he asked for. When he counted only seventy pesos, not a hundred, he could not believe God would make a mistake. So he concluded that the post office employees had stolen the rest. Ironically, they had actually helped him.
Partial answer (about 1½/3): "Lencho wrote a letter to God asking for hundred pesos because the hailstorm destroyed his crops. The postmaster laughed and collected money and sent it to Lencho. Lencho was angry and called them crooks."
Where the marks went: most of the content marks. The answer retells the story but never explains why Lencho suspected the employees: his faith that God could not be wrong. The first sentence of an answer should answer the question.
Would your child like answers marked the way a CBSE examiner marks them? Book a free Class 10 demo in Gurgaon. A tutor will mark a recent school paper against the official scheme and show where the step, label and point marks are going.
Book a Free Class 10 Demo +91 92204 75088Presentation and time
A 3-hour, 80-mark paper gives about 2¼ minutes per mark, which our tutors use as a rough budget: about 11 minutes for a 5-mark answer, 6–7 minutes for a 3-mark answer and 4 minutes for a 2-mark answer. Aim to go faster on 1-mark MCQs, which leaves 10–15 minutes at the end for checking.
- Number answers exactly as the paper does, including sub-parts and the option you chose in an internal choice, such as "27 (A)".
- Start each answer on a new line and leave a line between answers.
- Underline key terms and final answers. This is our advice, not a CBSE rule. It helps the examiner find the value points quickly.
- Cross out mistakes with a single line rather than overwriting.
- Write legibly in dark ink. In 2026, CBSE evaluated Class XII answer books on screen from scanned copies, according to its On Screen Marking FAQ. We have not seen the same announced for Class X, but clear writing helps whichever way a paper is marked.
- Attempt every question. The marking schemes award marks for correct steps and points. A blank earns nothing, and a sensible partial answer often earns something.
Mistakes that cost marks
- Writing two options in an MCQ. In English, the sample scheme gives no marks for this, and a Maths MCQ has no part marks either.
- Final answers without units or a closing statement in Maths and Science numericals.
- No figure in heights and distances or geometry proofs, where the figure carries a mark.
- Unlabelled or wrongly labelled diagrams, when the labels are worth as much as the drawing.
- Keeping an impossible root, like a negative length, in a quadratic word problem.
- One idea repeated in different words in a Social Science answer.
- Going far past the word limit, which costs time you need for later questions.
- Retelling the story in a literature answer instead of answering the question.
- Missing letter format, such as the date, subject line or complimentary close.
- Ignoring the data in a case-based question and writing a general textbook answer.
How to practise answer writing at home
Answer writing improves with marked practice. A weekly routine our Home Tutors Team uses from about June:
| Subject | Weekly practice | Mark it against |
|---|---|---|
| Maths | Two 5-mark and three 3-mark questions, one step per line | The step split in the sample or previous-year marking scheme |
| Science | One numerical, one labelled diagram, one "give reasons" question | Diagram and label marks; formula, substitution, unit |
| Social Science | One 5-mark and two 3-mark answers, timed, within word limits; five map items | "Any 3 / any 5 points" |
| English | One writing task and two literature answers | The format, content, organisation and accuracy rubric |
Mark your own answers against the official scheme first, then have a parent, teacher or tutor mark them. Count the words in your first few Social Science answers to learn how many lines of your handwriting make 60 or 120 words. The official papers to practise from are covered in our guides to CBSE Class 10 sample papers and CBSE Class 10 previous year question papers. For where this practice fits into the year, see our CBSE Class 10 board exam month-by-month plan.
From our tutors: when students mark their own Social Science answers point by point, many are surprised to find that a long answer they felt good about contains only two or three separate points. After a few weeks of numbering points and checking them against "any 5 points", their answers get shorter and score higher.
Frequently asked questions
Do CBSE examiners give marks for steps if the final answer is wrong?
Yes. The marking schemes split Maths and Science answers into steps with ½ or 1 mark each. The evaluator instructions also say an error should be "penalized only once". A wrong final answer after correct working still earns the marks for the correct steps. One-mark MCQs have no part marks.
What happens if I cross the word limit in Social Science?
The 2026–27 sample paper says answers "should not exceed" 40, 60, 100 or 120 words, depending on the question type. The marking schemes we reviewed don't set a fixed deduction for this. Examiners mark the value points. But long answers use time you need for later questions, so practise writing within the limits.
How many points should a 5-mark Social Science answer have?
Five separate points, unless the question sets out its parts differently. The 2026–27 sample scheme marks 5-mark answers as "(Any 5 points)" and accepts "any other relevant point". Give each point a short heading and one explanatory sentence.
Should I draw a diagram even if the question doesn't ask for one?
If the question asks for a diagram, the drawing and labels carry marks. If it doesn't, a small labelled sketch can make an explanation clearer. The 2026 Science scheme noted that one procedure "can also be explained with a Diagram". It earns marks only for the points it shows, though, so don't let it replace the written answer.
Where can I find the official CBSE Class 10 marking schemes?
Sample question papers and their marking schemes for 2026–27 are on cbseacademic.nic.in. The marking schemes used for the 2026 board exams are on the marking scheme page of cbse.gov.in, arranged by year, class and subject.
Can a home tutor help with answer writing?
Yes. A tutor can mark practice answers strictly against the CBSE scheme, show exactly where step, label or point marks are lost, and set weekly writing practice. Results depend on the student's effort, so we do not promise marks. Our Class 10 home tutors in Gurgaon teach at home or online, and male and female tutors are available.
Want answer-writing practice marked the CBSE way every week? Book a free Class 10 demo with Ajay Vatsyayan Classes, Saraswati kunj II, Wazirabad, Sector 52, Gurugram, Haryana 122003. We have 12+ years of home tutoring in Gurgaon, at home or online.
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