` pair, so anchor-based navigation works correctly even though all five sit inside one wrapper. `─────────────────────────────────────────────────` --- APDHTE Class X Board Syllabus 2027 is prescribed by the Directorate of School Education, Arunachal Pradesh (DSEAP) under the Department of Higher and Technical Education (DHTE), Arunachal Pradesh. The board follows an NCERT-aligned curriculum for the Class 10 examination held every year in March. Students preparing for the APDHTE Class X 2027 exam should download the official syllabus from apdhte.nic.in and build their study plan subject-wise well before the exam.
- The APDHTE Class X 2027 syllabus covers five compulsory subjects: Mathematics, General Science, Social Science, English, and Hindi/MIL.
- The syllabus is NCERT-aligned — NCERT Class 9 and 10 textbooks are the primary study source for all core subjects.
- The 2027 syllabus is expected to remain the same as the 2026 curriculum; no official revision has been announced as of September 2026.
- Mathematics covers seven units including Algebra, Geometry, Trigonometry, Mensuration, and Statistics — each with defined chapter-wise weightage.
- The General Science paper integrates Physics, Chemistry, and Biology topics from NCERT Class 10 Science.
- The official APDHTE Class X syllabus PDFs are available at apdhte.nic.in and education.arunachal.gov.in.
- The APDHTE Class X 2027 theory exams are expected in March 2027; practical examinations precede them in January–February 2027.
You should begin preparation at least 5 months before the March 2027 exam and cover every NCERT chapter — the APDHTE Class X paper is heavily NCERT-based.
Download APDHTE Class X 2027 Syllabus PDF
APDHTE Class X 2027 Syllabus PDF APDHTE Class X 2027 Syllabus PDF: Download Subject-wise
DSEAP releases the subject-wise Class X syllabus PDFs on the official portal. Download each subject’s PDF before starting your preparation.
Subject APDHTE Class X Syllabus PDF Mathematics APDHTE Class X Mathematics Syllabus PDF General Science APDHTE Class X General Science Syllabus PDF Social Science APDHTE Class X Social Science Syllabus PDF English APDHTE Class X English Syllabus PDF Hindi / MIL APDHTE Class X Hindi/MIL Syllabus PDF
APDHTE Class X 2027 Syllabus Overview APDHTE Class X 2027 Syllabus: Overview
The Directorate of School Education, Arunachal Pradesh (DSEAP) prescribes the Class X syllabus for all APDHTE-affiliated schools. The curriculum is based on NCERT Class 9 and 10 textbooks. Theory examinations run for 3 hours per subject, with separate internal assessments or practicals.
Parameter Details Conducting Body Directorate of School Education, Arunachal Pradesh (DSEAP) Department Dept. of Higher & Technical Education (DHTE), Arunachal Pradesh Exam Class X Board Examination (HSLC) Academic Year 2026–27 Compulsory Subjects 5 (Mathematics, General Science, Social Science, English, Hindi/MIL) Marks per Subject 100 (80 Theory + 20 Internal/Practical) Syllabus Basis NCERT Class 9 and Class 10 Curriculum Official Website apdhte.nic.in | education.arunachal.gov.in
APDHTE Class X 2027 Important Dates APDHTE Class X 2027: Important Dates
DSEAP releases the official exam schedule a few months before the March examinations. The dates below are based on the previous year’s schedule and are expected for the 2027 cycle. Check apdhte.nic.in for confirmed dates once the timetable is published.
Event Expected Date (2027 Cycle) Status Exam Form Submission October–November 2026 Upcoming Admit Card Release January 2027 Upcoming Practical Examinations January–February 2027 Upcoming Theory Examinations March 2027 Upcoming Result Declaration May–June 2027 Upcoming 2027 Syllabus PDF Available at apdhte.nic.in Available
APDHTE Class X 2027 Mathematics Syllabus APDHTE Class X 2027 Mathematics Syllabus
The Mathematics syllabus follows NCERT Class 10 Mathematics across seven units. The theory paper carries 80 marks; internal assessment carries 20 marks. Algebra and Geometry together account for more than half the theory marks.
Unit Unit Name Key Topics I Number Systems Topics of Unit I – Click Here
Real Numbers, Euclid’s Division Lemma, Fundamental Theorem of Arithmetic, Irrational Numbers, Decimal Expansion of Rational Numbers
II Algebra Topics of Unit II – Click Here
Polynomials (zeros, relationship between zeros and coefficients); Pair of Linear Equations in Two Variables (graphical, substitution, elimination, cross-multiplication methods); Quadratic Equations (factorisation, completing the square, quadratic formula, nature of roots); Arithmetic Progressions (nth term, sum of n terms, applications)
III Coordinate Geometry Topics of Unit III – Click Here
Distance Formula, Section Formula (internal division), Area of a Triangle using coordinates
IV Geometry Topics of Unit IV – Click Here
Triangles: Similarity criteria (AA, SSS, SAS), Basic Proportionality Theorem, Pythagoras Theorem and its converse; Circles: Tangent to a circle, tangent from an external point, angle between tangent and radius
V Trigonometry Topics of Unit V – Click Here
Trigonometric Ratios (sin, cos, tan and their reciprocals); Trigonometric Identities; Applications of Trigonometry — heights and distances (angle of elevation, angle of depression)
VI Mensuration Topics of Unit VI – Click Here
Areas Related to Circles (area of sector, segment, combinations of plane figures); Surface Areas and Volumes of solids (cube, cuboid, cone, cylinder, sphere, hemisphere, frustum of a cone, combinations of solids)
VII Statistics and Probability Topics of Unit VII – Click Here
Statistics: Mean, Median, Mode for grouped data; Cumulative Frequency Distribution and ogives; Probability: Classical definition, simple events, complement of an event
APDHTE Class X Mathematics Unit-wise Weightage
Unit Topic Marks (Theory, Approx) I Number Systems 6 II Algebra 20 III Coordinate Geometry 6 IV Geometry 15 V Trigonometry 12 VI Mensuration 10 VII Statistics and Probability 11 Total (Theory) 80
APDHTE Class X 2027 General Science Syllabus APDHTE Class X 2027 General Science Syllabus
General Science covers Physics, Chemistry, and Biology topics from NCERT Class 10 Science. Theory carries 80 marks; practicals carry 20 marks. All three sections carry roughly equal weightage in the theory paper.
Section Chapter / Topic Key Sub-topics Physics Light – Reflection and Refraction Sub-topics – Click Here
Laws of reflection; spherical mirrors (concave, convex); mirror formula; magnification; refraction through glass slab; lens formula; power of lens
Human Eye and Colourful World Sub-topics – Click Here
Structure and working of the human eye; defects of vision (myopia, hypermetropia, presbyopia) and their correction; refraction through a glass prism; atmospheric refraction; scattering of light (Tyndall effect)
Electricity and Magnetic Effects Sub-topics – Click Here
Ohm’s Law; series and parallel resistors; electric power and heating; magnetic field around a current-carrying conductor; Fleming’s left-hand rule; electromagnetic induction; Fleming’s right-hand rule; AC and DC generators; domestic electric circuits and safety
Chemistry Chemical Reactions; Acids, Bases and Salts Sub-topics – Click Here
Types of chemical reactions (combination, decomposition, displacement, double displacement, redox); properties of acids and bases; pH scale; salts; bleaching powder, baking soda, washing soda, plaster of Paris
Metals and Non-metals; Carbon Compounds Sub-topics – Click Here
Physical and chemical properties of metals and non-metals; reactivity series; ionic compounds; extraction of metals; corrosion; alloys; carbon compounds; IUPAC nomenclature; saturated and unsaturated hydrocarbons; functional groups; soap and detergents
Periodic Classification of Elements Sub-topics – Click Here
Döbereiner’s triads; Newlands’ law of octaves; Mendeleev’s Periodic Table (merits and limitations); Modern Periodic Table; trends in periodic properties (atomic size, metallic character, valency)
Biology Life Processes and Control Sub-topics – Click Here
Nutrition (autotrophic — photosynthesis; heterotrophic — human digestive system); respiration (aerobic, anaerobic); transportation (blood, lymph, stomata, xylem, phloem); excretion (kidneys, skin, lungs, plants); nervous system; reflex arc; brain; hormones; tropisms in plants
Reproduction Sub-topics – Click Here
Asexual reproduction (fission, fragmentation, regeneration, budding, spores, vegetative propagation); sexual reproduction in flowering plants; human male and female reproductive systems; fertilisation; pregnancy; contraception; sexually transmitted infections
Heredity and Evolution Sub-topics – Click Here
Mendel’s laws (monohybrid and dihybrid cross); sex determination in humans; variations; evolution (Darwin’s theory, speciation); human evolution; origin of life
Environment and Natural Resources Sub-topics – Click Here
Ecosystems; food chains and food webs; trophic levels; biodegradable and non-biodegradable waste; ozone layer depletion; management of natural resources (forests, water, coal, petroleum); sustainable development
APDHTE Class X Science Section-wise Weightage
Section High-Weightage Topics Approx Marks (Theory) Physics Light, Electricity, Magnetic Effects 25–27 Chemistry Chemical Reactions, Acids/Bases, Metals, Carbon Compounds 25–27 Biology Life Processes, Reproduction, Heredity, Environment 26–30 Total (Theory) 80
APDHTE Class X 2027 Social Science Syllabus APDHTE Class X 2027 Social Science Syllabus
Social Science integrates four disciplines into a single paper: History, Geography, Political Science, and Economics. The paper carries 80 marks theory and 20 marks internal assessment, based on four separate NCERT Class 10 textbooks.
History: India and the Contemporary World – II
Chapter Key Topics The Rise of Nationalism in Europe French Revolution, nationalism, unification of Italy and Germany, imagery of nationalism Nationalism in India Non-Cooperation Movement, Civil Disobedience Movement, Quit India Movement, various social groups in the nationalist movement The Making of a Global World Silk routes, colonialism, interwar economy, Bretton Woods institutions, post-war recovery The Age of Industrialisation Proto-industrialisation, Industrial Revolution in Britain, industrial growth in India Print Culture and the Modern World Gutenberg press, print in Europe, China, and India; impact of print on society and religious reform
Geography: Contemporary India – II
Chapter Key Topics Resources and Development Classification of resources, resource planning in India, soil types and conservation Forest and Wildlife Resources Flora and fauna, types of forests, conservation projects, biosphere reserves Water Resources Water scarcity, multipurpose river projects, rainwater harvesting methods Agriculture Types of farming, major crops (food, cash, plantation), Green Revolution, globalisation and Indian agriculture Minerals, Energy and Manufacturing Types of minerals; conventional and non-conventional energy; types of industries; industrial pollution and sustainable development Life Lines of National Economy Transport (roadways, railways, waterways, airways); communication; international trade; India’s trade with the world
Political Science: Democratic Politics – II
Chapter Key Topics Power Sharing and Federalism Belgium and Sri Lanka case studies; forms of power sharing; features of federalism; decentralisation in India Democracy and Diversity; Gender, Religion, Caste Social divisions; communalism; secularism; women in politics; caste and politics Political Parties and Popular Struggles Functions of political parties; national vs state parties; party reform; role of pressure groups Outcomes and Challenges of Democracy Accountability, economic outcomes, dignity and freedom; deepening democracy; democratic reform
Economics: Understanding Economic Development
Chapter Key Topics Development Development goals, national income vs per capita income, HDI, sustainability of development Sectors of Indian Economy Primary, secondary, tertiary sectors; contribution to GDP; employment; organised vs unorganised sectors Money and Credit Modern forms of money; banking; formal and informal credit; terms of credit; self-help groups Globalisation and Consumer Rights MNCs, trade liberalisation, WTO, impact on Indian economy; consumer rights and duties, COPRA, consumer courts, ISI and Agmark
APDHTE Class X 2027 English Syllabus APDHTE Class X 2027 English Syllabus
The English paper tests reading, writing, grammar, and literature skills. It is based on NCERT prescribed Class 10 English textbooks — First Flight and Footprints Without Feet.
Section Topics Covered Approx Marks Reading Comprehension Unseen passages (factual, discursive); note-making and summary 20 Writing Skills Formal letter, article writing, speech writing, notice, message, report writing 20 Grammar Tenses, modals, active and passive voice, reported speech, clauses, determiners, prepositions, sentence reordering 20 Literature Prose and poetry from First Flight; supplementary reader from Footprints Without Feet; reference to context; long and short answers on themes and characters 20 Total (Theory) 80
APDHTE Class X 2027 Hindi / MIL Syllabus APDHTE Class X 2027 Hindi / MIL Syllabus
Hindi or a Modern Indian Language (MIL) is a compulsory second language. The paper covers reading, writing, grammar, and literature sections from the board-prescribed textbooks.
Section Topics Covered Approx Marks Reading Comprehension Unseen prose passage; vocabulary in context; comprehension questions 15 Writing Skills Essay writing (descriptive/argumentative), formal and informal letter writing, summary writing 20 Grammar Sandhi, Samas, parts of speech (Karak, Vachan, Ling), idioms and proverbs, sentence correction and transformation 20 Literature Prose and poetry from APDHTE/NCERT prescribed Hindi textbooks (Sparsh and Sanchayan for Hindi-B); reference to context; long answers on themes 25 Total (Theory) 80
APDHTE Class X 2027 Exam Pattern APDHTE Class X 2027 Exam Pattern
Each subject paper runs for 3 hours. Every subject carries 100 total marks — 80 for theory and 20 for internal assessment or practicals. Students must pass both the theory and internal assessment components of each subject separately.
Subject Theory Marks Internal / Practical Total Marks Duration Mathematics 80 20 (Internal) 100 3 hours General Science 80 20 (Practical) 100 3 hours Social Science 80 20 (Internal) 100 3 hours English 80 20 (Internal) 100 3 hours Hindi / MIL 80 20 (Internal) 100 3 hours Total (5 subjects) 400 100 500 –
Question types typically include very short answer (1 mark), short answer (2–3 marks), and long answer (5 marks) questions. Map-based questions appear in the Geography section of the Social Science paper.
Best Books for APDHTE Class X 2027 Best Books for APDHTE Class X 2027
NCERT textbooks are the primary and most important resource for the APDHTE Class X exam. The reference books below are useful for extra practice and conceptual clarity.
Subject Book Name Author / Publisher Why This Book Mathematics Mathematics Class 10 NCERT Primary textbook; all NCERT exercises are exam-relevant Mathematics RD Sharma Mathematics Class 10 RD Sharma / Dhanpat Rai Publications Chapter-wise extra problems; useful for Algebra and Geometry practice General Science Science Class 10 NCERT Covers all three sections (Physics, Chemistry, Biology) comprehensively General Science Lakhmir Singh Science Class 10 Lakhmir Singh / S. Chand Chapter-wise explanations with MCQs and practicals guide Social Science India and the Contemporary World II; Contemporary India II; Democratic Politics II; Understanding Economic Development NCERT All four SST disciplines covered; includes maps in the Geography book English First Flight and Footprints Without Feet NCERT Prescribed literature texts; all grammar and writing sections derive from these Hindi Sparsh and Sanchayan (Class 10) NCERT Prescribed Hindi-B texts; grammar and writing exercises included within
How to Download APDHTE Class X 2027 Syllabus PDF How to Download APDHTE Class X 2027 Syllabus PDF
Follow these steps to download the official APDHTE Class X syllabus PDF from the DSEAP portal.
- Visit the official website at apdhte.nic.in or education.arunachal.gov.in.
- Look for the "Syllabus" or "Academic" section in the main navigation menu.
- Click on "Class X Syllabus" or "HSLC Syllabus 2026–27".
- A PDF opens in a new browser tab with the complete subject-wise syllabus.
- Press Ctrl + S (Windows) or Cmd + S (Mac) to save the file to your device.
- Alternatively, click the download icon in your PDF viewer to save the file locally.
Note: If a separate 2027 cycle syllabus PDF has not been uploaded yet, the 2026–27 syllabus (same NCERT-aligned curriculum) applies. Bookmark the official page and check back after any official DSEAP notification.
APDHTE Class X 2027 Preparation Tips Preparation Tips for APDHTE Class X 2027
Begin preparation at least five months before March 2027. A subject-wise plan with regular revision and mock practice is the most effective approach for the APDHTE Class X board exam.
Mathematics
- Solve every NCERT exercise problem — each exercise maps directly to exam question types.
- Algebra (Unit II) carries the highest weightage (~20 marks) — master Quadratic Equations and Arithmetic Progressions first.
- Practice Trigonometric Identities daily until all standard identities and their derivations are automatic.
- Attempt at least two full Mathematics mock papers per week in the final four weeks.
- Revise Mensuration formulas (frustum, surface area, volume) as a quick one-day revision just before the exam.
General Science
- Write out Physics numerical solutions step-by-step — showing formula, substitution, and units earns full marks.
- Chemistry chapters (Acids, Bases and Salts; Metals and Non-metals) have many direct one-mark questions — memorise key reactions, pH facts, and properties.
- Draw Biology diagrams (human eye, neuron, reproductive organs) from memory; neat labels earn separate marks.
- Prepare a formula sheet for the Electricity chapter — Ohm’s Law, power, resistance combinations — and revise it weekly.
- Revise your practical records before the practical exam — practical questions often reappear in the theory paper too.
Social Science
- Practise NCERT map work for Geography — map-based questions appear in every APDHTE Class X paper.
- For History, understand causes and consequences rather than memorising events and dates alone.
- Use bullet-point notes for Political Science — these chapters have short, direct questions worth 1–2 marks each.
- For Economics, draw flowcharts for sectors and credit-flow concepts — visual summaries speed up revision.
- The Social Science paper covers four disciplines — time yourself in mock tests so no section takes more than 45 minutes.
English
- Read each prose chapter and poem from First Flight at least twice — themes and character sketches form the basis of long answers.
- Practise formal letter writing using standard formats — at least one letter appears in every paper.
- Spend 15 minutes daily on grammar exercises covering voice, narration, and tense transformations.
- For reading comprehension, focus on main idea and inference questions — these are faster to answer and carry consistent marks.
Hindi / MIL
- Revise Sandhi and Samas rules thoroughly — these are direct mark-earners in the Grammar section.
- Practise essay writing on general topics (environment, technology, social issues) twice a week.
- Memorise key poetic lines and their explanations from prescribed poetry texts for the reference-to-context questions.
- Write one summary per week from the prose chapters — this improves both comprehension and writing skills together.
APDHTE Class X Syllabus FAQs APDHTE Class X 2027 Syllabus FAQs
Ques. Is the APDHTE Class X 2027 syllabus the same as last year?
Ans. No official revision has been announced for the 2027 cycle as of September 2026. The APDHTE Class X syllabus has remained consistent with the NCERT-aligned curriculum used in previous years. Visit apdhte.nic.in for any official notifications before the exam.
Ques. Which subject has the highest weightage in APDHTE Class X?
Ans. All five compulsory subjects carry equal total marks (100 each). Within individual subjects, Algebra carries the highest single-unit theory weightage in Mathematics (~20 marks out of 80). All three sections of Science (Physics, Chemistry, Biology) carry roughly equal theory marks (~25–30 marks each).
Ques. Is NCERT enough for APDHTE Class X preparation?
Ans. Yes, NCERT textbooks are sufficient for the APDHTE Class X exam. The board’s curriculum is closely aligned with NCERT Class 9 and 10 content. For extra practice in Mathematics, refer to RD Sharma Class 10. For Science, Lakhmir Singh Class 10 gives additional MCQs and numericals.
Ques. Where can I download the APDHTE Class X 2027 official syllabus PDF?
Ans. Download the official Class X syllabus PDF from the DSEAP portal at apdhte.nic.in or education.arunachal.gov.in. Navigate to the Syllabus or Academic section and look for the HSLC/Class X syllabus link. Subject-wise PDFs are available separately for Mathematics, Science, Social Science, English, and Hindi/MIL.
Ques. Which are the most important chapters in Mathematics for APDHTE Class X?
Ans. The highest-weightage Mathematics chapters are Algebra (Quadratic Equations, Linear Equations, Arithmetic Progressions — ~20 marks), Geometry (Triangles, Circles — ~15 marks), and Trigonometry (~12 marks). Together these three units account for nearly 60% of the theory paper.
Ques. Has the APDHTE Class X syllabus been revised for 2027?
Ans. No official syllabus revision has been announced for the 2027 cycle as of September 2026. The syllabus continues to follow the NCERT-aligned curriculum. Check apdhte.nic.in regularly for official notifications before the exam season begins.
Ques. How many subjects are in the APDHTE Class X 2027 syllabus?
Ans. APDHTE Class X has five compulsory subjects: Mathematics, General Science, Social Science, English, and Hindi/MIL. Some schools may offer an additional optional subject. Each compulsory subject carries 100 marks (80 theory + 20 internal/practical).
Ques. What books should I follow for Science in APDHTE Class X?
Ans. Use NCERT Class 10 Science as your primary book — it covers Physics, Chemistry, and Biology in one volume. For additional practice, use Lakhmir Singh Science Class 10 (S. Chand), which has chapter-wise MCQs and a practical guide for the lab exam.
Ques. Is the Electricity chapter important for APDHTE Class X Science?
Ans. Yes, the Electricity chapter is one of the most important Physics topics in APDHTE Class X Science. It typically carries 5–8 marks in the theory paper. Questions include numerical problems on Ohm’s Law, series/parallel circuits, and electric power. Practice at least 10 numericals from this chapter before the exam.
Ques. When are the APDHTE Class X 2027 theory exams expected?
Ans. Based on previous year schedules, the APDHTE Class X 2027 theory exams are expected in March 2027. Practical examinations typically precede theory exams in January–February 2027. DSEAP usually releases the official timetable 2–3 months before the exam. Check apdhte.nic.in for the confirmed date sheet.
Ques. How should I cover the full APDHTE Class X syllabus in 5 months?
Ans. Divide the 5-month timeline as follows: Months 1–2: cover NCERT chapters for all subjects; Month 3: subject-wise chapter tests and first revision; Month 4: mock papers and weak-area revision; Month 5: practicals preparation and final revision of formulas, diagrams, and maps. Aim for at least one full mock paper per week in the last six weeks.
APDHTE Class X Board Syllabus 2027 is prescribed by the Directorate of School Education, Arunachal Pradesh (DSEAP) under the Department of Higher and Technical Education (DHTE), Arunachal Pradesh. The board follows an NCERT-aligned curriculum for the Class 10 examination held every year in March. Students preparing for the APDHTE Class X 2027 exam should download the official syllabus from apdhte.nic.in and build their study plan subject-wise well before the exam.
- The APDHTE Class X 2027 syllabus covers five compulsory subjects: Mathematics, General Science, Social Science, English, and Hindi/MIL.
- The syllabus is NCERT-aligned — NCERT Class 9 and 10 textbooks are the primary study source for all core subjects.
- The 2027 syllabus is expected to remain the same as the 2026 curriculum; no official revision has been announced as of September 2026.
- Mathematics covers seven units including Algebra, Geometry, Trigonometry, Mensuration, and Statistics — each with defined chapter-wise weightage.
- The General Science paper integrates Physics, Chemistry, and Biology topics from NCERT Class 10 Science.
- The official APDHTE Class X syllabus PDFs are available at apdhte.nic.in and education.arunachal.gov.in.
- The APDHTE Class X 2027 theory exams are expected in March 2027; practical examinations precede them in January–February 2027.
You should begin preparation at least 5 months before the March 2027 exam and cover every NCERT chapter — the APDHTE Class X paper is heavily NCERT-based.
| Download APDHTE Class X 2027 Syllabus PDF |
APDHTE Class X 2027 Syllabus PDF: Download Subject-wise
DSEAP releases the subject-wise Class X syllabus PDFs on the official portal. Download each subject’s PDF before starting your preparation.
| Subject | APDHTE Class X Syllabus PDF |
|---|---|
| Mathematics | APDHTE Class X Mathematics Syllabus PDF |
| General Science | APDHTE Class X General Science Syllabus PDF |
| Social Science | APDHTE Class X Social Science Syllabus PDF |
| English | APDHTE Class X English Syllabus PDF |
| Hindi / MIL | APDHTE Class X Hindi/MIL Syllabus PDF |
APDHTE Class X 2027 Syllabus: Overview
The Directorate of School Education, Arunachal Pradesh (DSEAP) prescribes the Class X syllabus for all APDHTE-affiliated schools. The curriculum is based on NCERT Class 9 and 10 textbooks. Theory examinations run for 3 hours per subject, with separate internal assessments or practicals.
| Parameter | Details |
|---|---|
| Conducting Body | Directorate of School Education, Arunachal Pradesh (DSEAP) |
| Department | Dept. of Higher & Technical Education (DHTE), Arunachal Pradesh |
| Exam | Class X Board Examination (HSLC) |
| Academic Year | 2026–27 |
| Compulsory Subjects | 5 (Mathematics, General Science, Social Science, English, Hindi/MIL) |
| Marks per Subject | 100 (80 Theory + 20 Internal/Practical) |
| Syllabus Basis | NCERT Class 9 and Class 10 Curriculum |
| Official Website | apdhte.nic.in | education.arunachal.gov.in |
APDHTE Class X 2027: Important Dates
DSEAP releases the official exam schedule a few months before the March examinations. The dates below are based on the previous year’s schedule and are expected for the 2027 cycle. Check apdhte.nic.in for confirmed dates once the timetable is published.
| Event | Expected Date (2027 Cycle) | Status |
|---|---|---|
| Exam Form Submission | October–November 2026 | Upcoming |
| Admit Card Release | January 2027 | Upcoming |
| Practical Examinations | January–February 2027 | Upcoming |
| Theory Examinations | March 2027 | Upcoming |
| Result Declaration | May–June 2027 | Upcoming |
| 2027 Syllabus PDF | Available at apdhte.nic.in | Available |
APDHTE Class X 2027 Mathematics Syllabus
The Mathematics syllabus follows NCERT Class 10 Mathematics across seven units. The theory paper carries 80 marks; internal assessment carries 20 marks. Algebra and Geometry together account for more than half the theory marks.
| Unit | Unit Name | Key Topics |
|---|---|---|
| I | Number Systems | Topics of Unit I – Click Here Real Numbers, Euclid’s Division Lemma, Fundamental Theorem of Arithmetic, Irrational Numbers, Decimal Expansion of Rational Numbers |
| II | Algebra | Topics of Unit II – Click Here Polynomials (zeros, relationship between zeros and coefficients); Pair of Linear Equations in Two Variables (graphical, substitution, elimination, cross-multiplication methods); Quadratic Equations (factorisation, completing the square, quadratic formula, nature of roots); Arithmetic Progressions (nth term, sum of n terms, applications) |
| III | Coordinate Geometry | Topics of Unit III – Click Here Distance Formula, Section Formula (internal division), Area of a Triangle using coordinates |
| IV | Geometry | Topics of Unit IV – Click Here Triangles: Similarity criteria (AA, SSS, SAS), Basic Proportionality Theorem, Pythagoras Theorem and its converse; Circles: Tangent to a circle, tangent from an external point, angle between tangent and radius |
| V | Trigonometry | Topics of Unit V – Click Here Trigonometric Ratios (sin, cos, tan and their reciprocals); Trigonometric Identities; Applications of Trigonometry — heights and distances (angle of elevation, angle of depression) |
| VI | Mensuration | Topics of Unit VI – Click Here Areas Related to Circles (area of sector, segment, combinations of plane figures); Surface Areas and Volumes of solids (cube, cuboid, cone, cylinder, sphere, hemisphere, frustum of a cone, combinations of solids) |
| VII | Statistics and Probability | Topics of Unit VII – Click Here Statistics: Mean, Median, Mode for grouped data; Cumulative Frequency Distribution and ogives; Probability: Classical definition, simple events, complement of an event |
APDHTE Class X Mathematics Unit-wise Weightage
| Unit | Topic | Marks (Theory, Approx) |
|---|---|---|
| I | Number Systems | 6 |
| II | Algebra | 20 |
| III | Coordinate Geometry | 6 |
| IV | Geometry | 15 |
| V | Trigonometry | 12 |
| VI | Mensuration | 10 |
| VII | Statistics and Probability | 11 |
| Total (Theory) | 80 | |
APDHTE Class X 2027 General Science Syllabus
General Science covers Physics, Chemistry, and Biology topics from NCERT Class 10 Science. Theory carries 80 marks; practicals carry 20 marks. All three sections carry roughly equal weightage in the theory paper.
| Section | Chapter / Topic | Key Sub-topics |
|---|---|---|
| Physics | Light – Reflection and Refraction | Sub-topics – Click Here Laws of reflection; spherical mirrors (concave, convex); mirror formula; magnification; refraction through glass slab; lens formula; power of lens |
| Human Eye and Colourful World | Sub-topics – Click Here Structure and working of the human eye; defects of vision (myopia, hypermetropia, presbyopia) and their correction; refraction through a glass prism; atmospheric refraction; scattering of light (Tyndall effect) | |
| Electricity and Magnetic Effects | Sub-topics – Click Here Ohm’s Law; series and parallel resistors; electric power and heating; magnetic field around a current-carrying conductor; Fleming’s left-hand rule; electromagnetic induction; Fleming’s right-hand rule; AC and DC generators; domestic electric circuits and safety | |
| Chemistry | Chemical Reactions; Acids, Bases and Salts | Sub-topics – Click Here Types of chemical reactions (combination, decomposition, displacement, double displacement, redox); properties of acids and bases; pH scale; salts; bleaching powder, baking soda, washing soda, plaster of Paris |
| Metals and Non-metals; Carbon Compounds | Sub-topics – Click Here Physical and chemical properties of metals and non-metals; reactivity series; ionic compounds; extraction of metals; corrosion; alloys; carbon compounds; IUPAC nomenclature; saturated and unsaturated hydrocarbons; functional groups; soap and detergents | |
| Periodic Classification of Elements | Sub-topics – Click Here Döbereiner’s triads; Newlands’ law of octaves; Mendeleev’s Periodic Table (merits and limitations); Modern Periodic Table; trends in periodic properties (atomic size, metallic character, valency) | |
| Biology | Life Processes and Control | Sub-topics – Click Here Nutrition (autotrophic — photosynthesis; heterotrophic — human digestive system); respiration (aerobic, anaerobic); transportation (blood, lymph, stomata, xylem, phloem); excretion (kidneys, skin, lungs, plants); nervous system; reflex arc; brain; hormones; tropisms in plants |
| Reproduction | Sub-topics – Click Here Asexual reproduction (fission, fragmentation, regeneration, budding, spores, vegetative propagation); sexual reproduction in flowering plants; human male and female reproductive systems; fertilisation; pregnancy; contraception; sexually transmitted infections | |
| Heredity and Evolution | Sub-topics – Click Here Mendel’s laws (monohybrid and dihybrid cross); sex determination in humans; variations; evolution (Darwin’s theory, speciation); human evolution; origin of life | |
| Environment and Natural Resources | Sub-topics – Click Here Ecosystems; food chains and food webs; trophic levels; biodegradable and non-biodegradable waste; ozone layer depletion; management of natural resources (forests, water, coal, petroleum); sustainable development |
APDHTE Class X Science Section-wise Weightage
| Section | High-Weightage Topics | Approx Marks (Theory) |
|---|---|---|
| Physics | Light, Electricity, Magnetic Effects | 25–27 |
| Chemistry | Chemical Reactions, Acids/Bases, Metals, Carbon Compounds | 25–27 |
| Biology | Life Processes, Reproduction, Heredity, Environment | 26–30 |
| Total (Theory) | 80 | |
APDHTE Class X 2027 Social Science Syllabus
Social Science integrates four disciplines into a single paper: History, Geography, Political Science, and Economics. The paper carries 80 marks theory and 20 marks internal assessment, based on four separate NCERT Class 10 textbooks.
History: India and the Contemporary World – II
| Chapter | Key Topics |
|---|---|
| The Rise of Nationalism in Europe | French Revolution, nationalism, unification of Italy and Germany, imagery of nationalism |
| Nationalism in India | Non-Cooperation Movement, Civil Disobedience Movement, Quit India Movement, various social groups in the nationalist movement |
| The Making of a Global World | Silk routes, colonialism, interwar economy, Bretton Woods institutions, post-war recovery |
| The Age of Industrialisation | Proto-industrialisation, Industrial Revolution in Britain, industrial growth in India |
| Print Culture and the Modern World | Gutenberg press, print in Europe, China, and India; impact of print on society and religious reform |
Geography: Contemporary India – II
| Chapter | Key Topics |
|---|---|
| Resources and Development | Classification of resources, resource planning in India, soil types and conservation |
| Forest and Wildlife Resources | Flora and fauna, types of forests, conservation projects, biosphere reserves |
| Water Resources | Water scarcity, multipurpose river projects, rainwater harvesting methods |
| Agriculture | Types of farming, major crops (food, cash, plantation), Green Revolution, globalisation and Indian agriculture |
| Minerals, Energy and Manufacturing | Types of minerals; conventional and non-conventional energy; types of industries; industrial pollution and sustainable development |
| Life Lines of National Economy | Transport (roadways, railways, waterways, airways); communication; international trade; India’s trade with the world |
Political Science: Democratic Politics – II
| Chapter | Key Topics |
|---|---|
| Power Sharing and Federalism | Belgium and Sri Lanka case studies; forms of power sharing; features of federalism; decentralisation in India |
| Democracy and Diversity; Gender, Religion, Caste | Social divisions; communalism; secularism; women in politics; caste and politics |
| Political Parties and Popular Struggles | Functions of political parties; national vs state parties; party reform; role of pressure groups |
| Outcomes and Challenges of Democracy | Accountability, economic outcomes, dignity and freedom; deepening democracy; democratic reform |
Economics: Understanding Economic Development
| Chapter | Key Topics |
|---|---|
| Development | Development goals, national income vs per capita income, HDI, sustainability of development |
| Sectors of Indian Economy | Primary, secondary, tertiary sectors; contribution to GDP; employment; organised vs unorganised sectors |
| Money and Credit | Modern forms of money; banking; formal and informal credit; terms of credit; self-help groups |
| Globalisation and Consumer Rights | MNCs, trade liberalisation, WTO, impact on Indian economy; consumer rights and duties, COPRA, consumer courts, ISI and Agmark |
APDHTE Class X 2027 English Syllabus
The English paper tests reading, writing, grammar, and literature skills. It is based on NCERT prescribed Class 10 English textbooks — First Flight and Footprints Without Feet.
| Section | Topics Covered | Approx Marks |
|---|---|---|
| Reading Comprehension | Unseen passages (factual, discursive); note-making and summary | 20 |
| Writing Skills | Formal letter, article writing, speech writing, notice, message, report writing | 20 |
| Grammar | Tenses, modals, active and passive voice, reported speech, clauses, determiners, prepositions, sentence reordering | 20 |
| Literature | Prose and poetry from First Flight; supplementary reader from Footprints Without Feet; reference to context; long and short answers on themes and characters | 20 |
| Total (Theory) | 80 | |
APDHTE Class X 2027 Hindi / MIL Syllabus
Hindi or a Modern Indian Language (MIL) is a compulsory second language. The paper covers reading, writing, grammar, and literature sections from the board-prescribed textbooks.
| Section | Topics Covered | Approx Marks |
|---|---|---|
| Reading Comprehension | Unseen prose passage; vocabulary in context; comprehension questions | 15 |
| Writing Skills | Essay writing (descriptive/argumentative), formal and informal letter writing, summary writing | 20 |
| Grammar | Sandhi, Samas, parts of speech (Karak, Vachan, Ling), idioms and proverbs, sentence correction and transformation | 20 |
| Literature | Prose and poetry from APDHTE/NCERT prescribed Hindi textbooks (Sparsh and Sanchayan for Hindi-B); reference to context; long answers on themes | 25 |
| Total (Theory) | 80 | |
APDHTE Class X 2027 Exam Pattern
Each subject paper runs for 3 hours. Every subject carries 100 total marks — 80 for theory and 20 for internal assessment or practicals. Students must pass both the theory and internal assessment components of each subject separately.
| Subject | Theory Marks | Internal / Practical | Total Marks | Duration |
|---|---|---|---|---|
| Mathematics | 80 | 20 (Internal) | 100 | 3 hours |
| General Science | 80 | 20 (Practical) | 100 | 3 hours |
| Social Science | 80 | 20 (Internal) | 100 | 3 hours |
| English | 80 | 20 (Internal) | 100 | 3 hours |
| Hindi / MIL | 80 | 20 (Internal) | 100 | 3 hours |
| Total (5 subjects) | 400 | 100 | 500 | – |
Question types typically include very short answer (1 mark), short answer (2–3 marks), and long answer (5 marks) questions. Map-based questions appear in the Geography section of the Social Science paper.
Best Books for APDHTE Class X 2027
NCERT textbooks are the primary and most important resource for the APDHTE Class X exam. The reference books below are useful for extra practice and conceptual clarity.
| Subject | Book Name | Author / Publisher | Why This Book |
|---|---|---|---|
| Mathematics | Mathematics Class 10 | NCERT | Primary textbook; all NCERT exercises are exam-relevant |
| Mathematics | RD Sharma Mathematics Class 10 | RD Sharma / Dhanpat Rai Publications | Chapter-wise extra problems; useful for Algebra and Geometry practice |
| General Science | Science Class 10 | NCERT | Covers all three sections (Physics, Chemistry, Biology) comprehensively |
| General Science | Lakhmir Singh Science Class 10 | Lakhmir Singh / S. Chand | Chapter-wise explanations with MCQs and practicals guide |
| Social Science | India and the Contemporary World II; Contemporary India II; Democratic Politics II; Understanding Economic Development | NCERT | All four SST disciplines covered; includes maps in the Geography book |
| English | First Flight and Footprints Without Feet | NCERT | Prescribed literature texts; all grammar and writing sections derive from these |
| Hindi | Sparsh and Sanchayan (Class 10) | NCERT | Prescribed Hindi-B texts; grammar and writing exercises included within |
How to Download APDHTE Class X 2027 Syllabus PDF
Follow these steps to download the official APDHTE Class X syllabus PDF from the DSEAP portal.
- Visit the official website at apdhte.nic.in or education.arunachal.gov.in.
- Look for the "Syllabus" or "Academic" section in the main navigation menu.
- Click on "Class X Syllabus" or "HSLC Syllabus 2026–27".
- A PDF opens in a new browser tab with the complete subject-wise syllabus.
- Press Ctrl + S (Windows) or Cmd + S (Mac) to save the file to your device.
- Alternatively, click the download icon in your PDF viewer to save the file locally.
Note: If a separate 2027 cycle syllabus PDF has not been uploaded yet, the 2026–27 syllabus (same NCERT-aligned curriculum) applies. Bookmark the official page and check back after any official DSEAP notification.
Preparation Tips for APDHTE Class X 2027
Begin preparation at least five months before March 2027. A subject-wise plan with regular revision and mock practice is the most effective approach for the APDHTE Class X board exam.
Mathematics
- Solve every NCERT exercise problem — each exercise maps directly to exam question types.
- Algebra (Unit II) carries the highest weightage (~20 marks) — master Quadratic Equations and Arithmetic Progressions first.
- Practice Trigonometric Identities daily until all standard identities and their derivations are automatic.
- Attempt at least two full Mathematics mock papers per week in the final four weeks.
- Revise Mensuration formulas (frustum, surface area, volume) as a quick one-day revision just before the exam.
General Science
- Write out Physics numerical solutions step-by-step — showing formula, substitution, and units earns full marks.
- Chemistry chapters (Acids, Bases and Salts; Metals and Non-metals) have many direct one-mark questions — memorise key reactions, pH facts, and properties.
- Draw Biology diagrams (human eye, neuron, reproductive organs) from memory; neat labels earn separate marks.
- Prepare a formula sheet for the Electricity chapter — Ohm’s Law, power, resistance combinations — and revise it weekly.
- Revise your practical records before the practical exam — practical questions often reappear in the theory paper too.
Social Science
- Practise NCERT map work for Geography — map-based questions appear in every APDHTE Class X paper.
- For History, understand causes and consequences rather than memorising events and dates alone.
- Use bullet-point notes for Political Science — these chapters have short, direct questions worth 1–2 marks each.
- For Economics, draw flowcharts for sectors and credit-flow concepts — visual summaries speed up revision.
- The Social Science paper covers four disciplines — time yourself in mock tests so no section takes more than 45 minutes.
English
- Read each prose chapter and poem from First Flight at least twice — themes and character sketches form the basis of long answers.
- Practise formal letter writing using standard formats — at least one letter appears in every paper.
- Spend 15 minutes daily on grammar exercises covering voice, narration, and tense transformations.
- For reading comprehension, focus on main idea and inference questions — these are faster to answer and carry consistent marks.
Hindi / MIL
- Revise Sandhi and Samas rules thoroughly — these are direct mark-earners in the Grammar section.
- Practise essay writing on general topics (environment, technology, social issues) twice a week.
- Memorise key poetic lines and their explanations from prescribed poetry texts for the reference-to-context questions.
- Write one summary per week from the prose chapters — this improves both comprehension and writing skills together.
APDHTE Class X 2027 Syllabus FAQs
Ques. Is the APDHTE Class X 2027 syllabus the same as last year?
Ans. No official revision has been announced for the 2027 cycle as of September 2026. The APDHTE Class X syllabus has remained consistent with the NCERT-aligned curriculum used in previous years. Visit apdhte.nic.in for any official notifications before the exam.
Ques. Which subject has the highest weightage in APDHTE Class X?
Ans. All five compulsory subjects carry equal total marks (100 each). Within individual subjects, Algebra carries the highest single-unit theory weightage in Mathematics (~20 marks out of 80). All three sections of Science (Physics, Chemistry, Biology) carry roughly equal theory marks (~25–30 marks each).
Ques. Is NCERT enough for APDHTE Class X preparation?
Ans. Yes, NCERT textbooks are sufficient for the APDHTE Class X exam. The board’s curriculum is closely aligned with NCERT Class 9 and 10 content. For extra practice in Mathematics, refer to RD Sharma Class 10. For Science, Lakhmir Singh Class 10 gives additional MCQs and numericals.
Ques. Where can I download the APDHTE Class X 2027 official syllabus PDF?
Ans. Download the official Class X syllabus PDF from the DSEAP portal at apdhte.nic.in or education.arunachal.gov.in. Navigate to the Syllabus or Academic section and look for the HSLC/Class X syllabus link. Subject-wise PDFs are available separately for Mathematics, Science, Social Science, English, and Hindi/MIL.
Ques. Which are the most important chapters in Mathematics for APDHTE Class X?
Ans. The highest-weightage Mathematics chapters are Algebra (Quadratic Equations, Linear Equations, Arithmetic Progressions — ~20 marks), Geometry (Triangles, Circles — ~15 marks), and Trigonometry (~12 marks). Together these three units account for nearly 60% of the theory paper.
Ques. Has the APDHTE Class X syllabus been revised for 2027?
Ans. No official syllabus revision has been announced for the 2027 cycle as of September 2026. The syllabus continues to follow the NCERT-aligned curriculum. Check apdhte.nic.in regularly for official notifications before the exam season begins.
Ques. How many subjects are in the APDHTE Class X 2027 syllabus?
Ans. APDHTE Class X has five compulsory subjects: Mathematics, General Science, Social Science, English, and Hindi/MIL. Some schools may offer an additional optional subject. Each compulsory subject carries 100 marks (80 theory + 20 internal/practical).
Ques. What books should I follow for Science in APDHTE Class X?
Ans. Use NCERT Class 10 Science as your primary book — it covers Physics, Chemistry, and Biology in one volume. For additional practice, use Lakhmir Singh Science Class 10 (S. Chand), which has chapter-wise MCQs and a practical guide for the lab exam.
Ques. Is the Electricity chapter important for APDHTE Class X Science?
Ans. Yes, the Electricity chapter is one of the most important Physics topics in APDHTE Class X Science. It typically carries 5–8 marks in the theory paper. Questions include numerical problems on Ohm’s Law, series/parallel circuits, and electric power. Practice at least 10 numericals from this chapter before the exam.
Ques. When are the APDHTE Class X 2027 theory exams expected?
Ans. Based on previous year schedules, the APDHTE Class X 2027 theory exams are expected in March 2027. Practical examinations typically precede theory exams in January–February 2027. DSEAP usually releases the official timetable 2–3 months before the exam. Check apdhte.nic.in for the confirmed date sheet.
Ques. How should I cover the full APDHTE Class X syllabus in 5 months?
Ans. Divide the 5-month timeline as follows: Months 1–2: cover NCERT chapters for all subjects; Month 3: subject-wise chapter tests and first revision; Month 4: mock papers and weak-area revision; Month 5: practicals preparation and final revision of formulas, diagrams, and maps. Aim for at least one full mock paper per week in the last six weeks.
Source: Directorate of School Education, Arunachal Pradesh (apdhte.nic.in)
*The article might have information for the previous academic years, which will be updated soon subject to the notification issued by the University/College.
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