Course Content
Class X MATHEMATICS
Welcome to Dev Classes! Our Class 10 Mathematics Course is designed to build strong conceptual foundations, boost problem-solving skills, and prepare students for Board exams and future competitive tests. Below is the detailed curriculum we follow: 1. Real Numbers Fundamental Theorem of Arithmetic Euclid’s Division Lemma Revisiting Irrational Numbers Decimal Expansions of Rational Numbers 2. Polynomials Zeros of a Polynomial Relationship Between Zeros and Coefficients Division Algorithm for Polynomials 3. Pair of Linear Equations in Two Variables Graphical Method of Solution Algebraic Methods: Substitution, Elimination, Cross-Multiplication Applications in Daily Life 4. Quadratic Equations Solutions by Factorization and Completing the Square Quadratic Formula Nature of Roots (Discriminant) 5. Arithmetic Progressions Derivation of nth Term and Sum of First n Terms Application of AP in Real Life Problems 6. Triangles Similarity of Triangles Criteria for Similarity Areas of Similar Triangles Pythagoras Theorem and its Converse 7. Coordinate Geometry Distance Formula Section Formula (Internal Division) Area of a Triangle 8. Introduction to Trigonometry Trigonometric Ratios of Acute Angles Trigonometric Identities Heights and Distances (Simple Problems Only) 9. Circles Tangents to a Circle Number of Tangents from a Point to a Circle 10. Constructions Division of a Line Segment Construction of Tangents to a Circle 11. Areas Related to Circles Perimeter and Area of a Circle Areas of Sector and Segment Problems Based on Real-Life Situations 12. Surface Areas and Volumes Surface Area and Volume of a Combination of Solids (Cube, Cuboid, Sphere, Cylinder, Cone) Conversion of One Solid into Another Frustum of a Cone 13. Statistics Mean, Median, and Mode of Grouped Data Cumulative Frequency Graphs (Ogives) 14. Probability Basic Concepts of Probability Simple Problems Based on Real-Life Contexts Why Choose Dev Classes for Class X Maths? 🎯 Concept-Focused Learning: Step-by-step explanations and practical examples. 📈 Result-Oriented Practice: Regular assignments, quizzes, and mock tests. 📚 Comprehensive Notes: Easy-to-revise study materials downloadable anytime. 🧑‍🏫 Expert Faculty: Learn from experienced teachers specialized in Class 10 Board preparation. 🎥 Interactive Sessions: Doubt-solving classes and recorded lectures for flexible revision.
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Mathematics Introduction Class | Syllabus Discussion | Study Plan, Strategy & Blueprint
29:13
CLASS X MATHEMATICS DEMO
26:11
CHAPTER 1 : वास्तविक संख्याएँ LEC 1
Class X SCIENCE
🧪 1. Exam Pattern & Blueprint Theory Paper: 80 marks, duration: 2 hr 45 min Section A (Objective): 80 MCQs; attempt any 40 → 40 marks Section B (Subjective): Physics: 8 short-answer (SA) pick 4 + 1 long-answer (LA) → 4×2 + 6 = 14 marks Chemistry: 8 SA pick 4 + 1 LA → 4×2 + 5 = 13 marks Biology: 8 SA pick 4 + 1 LA → 4×2 + 5 = 13 marks Practicals: 20 marks (conducted before theory) Internal Assessment: 20 marks, school-based Total weightage: 100 marks 📘 2. Unit-wise Weightage & Topics Unit # Unit Name Marks* I Chemical Compounds (Chemistry) ~20–25 II The Living World (Biology) ~20 III Electricity & its Effects (Physics) ~10–18 IV Light & Communication (Physics) ~8–12 V Natural Resources & Environment ~8 📚 3. Detailed Topics by Subject 🔬 Physics Light (Reflection & Refraction) Spherical mirrors, lenses, image formation Human eye; defect types and correction Dispersion & colorful world Electricity Ohm’s Law, resistance, series & parallel circuits Magnetic Effects of Current Magnetic fields, electromagnetic induction, motor/generator basics Sources of Energy ⚗️ Chemistry Chemical Reactions & Equations Types & balancing reactions Acids, Bases & Salts Properties, pH scale, salt preparations Metals & Non‑Metals Properties, reactivity series, corrosion & prevention Carbon Compounds Basics of organic chemistry; hydrocarbons Periodic Classification Mendeleev’s & modern periodic table; periodic trends 🌱 Biology Life Processes Nutrition, respiration, circulation, excretion Control & Coordination Nervous system, hormones Reproduction Human & plant reproduction; sexual vs asexual Heredity & Evolution Mendelian genetics, evolutionary theories Our Environment & Natural Resources Ecosystems, conservation, sustainable development 🛠️ 4. Practicals & Internal Assessment Lab work covering key experiments from all physics, chemistry, and biology topics. Internal assessments may include experiments, project work, assignments, and class participation. 📅 5. Preparation Strategy Understand blueprint – focus more on high-weight units (Chemistry, Biology, Electricity). MCQ practice – essential since 40 MCQs carry 40 marks. Strengthen theory – write short and long answers for all core concepts. Hands-on practice – perform lab experiments thoroughly. Revision – solve past-year and model papers to get familiar with question types. Concept clarity – focus on understanding over rote memorization, as per board guidance 📄 6. Quick Topic Checklist [ ] Physics: Light, Eye, Electricity, Magnetism, Energy sources [ ] Chemistry: Reactions, Acids/Bases/Salts, Metals, Carbon compounds, Periodic Table [ ] Biology: Life processes, Coordination, Reproduction, Genetics, Environment
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Science Introduction Class | Syllabus Discussion | Study Plan, Strategy & Blueprint
20:33
CLASS X SCIENCE DEMO
26:26
CHAPTER 1 : रासायनिक अभिक्रियाएँ एवं समीकरण LEC 1
Class X SOCIAL SCIENCE
📝 Exam Pattern & Marks Distribution Theory Paper: 80 marks Section A: 80 MCQs, attempt any 40 → 40 marks Section B: Subjective questions → 40 marks Practical/Project/Internal Assessment: 20 marks Total: 100 marks 🗺️ Subject-Wise Syllabus Overview 1. History (25 marks) Rise of Nationalism in Europe The Nationalist Movement in Indo‑China Nationalism in India Age of Industrialisation The Making of a Global World Cities in the Contemporary World Print Culture and the Modern World Novels, Society and History 2. Civics / Political Science (25 marks) Power Sharing Federalism Democracy and Diversity Popular Struggles and Movements Outcomes of Democracy Gender, Religion & Caste Political Parties Challenges to Democracy 3. Geography (25 marks) Resources and Development Water Resources Forest & Wildlife Resources Minerals & Energy Resources Agriculture Manufacturing Industries Lifelines of National Economy (Transport, Communication, Trade) Map Work (Bihar context and general relief representation) 4. Economics (19–25 marks) Development & Indian Economy State & National Income Money, Savings, Credit Financial Institutions Employment & Services Globalization & Indian Economy Consumer Rights & Awareness 5. Disaster Management (6 marks) Introduction to Natural Disasters Flood & Drought Management Earthquake & Tsunami Management Life-saving Emergency Management Alternative Communication during Disasters Co-existence with Disasters 📊 Marks Breakdown by Unit Subject Marks (Theory) History 25 Civics / Political Sci. 25 Geography 25 Economics ~19–25 Disaster Management ~6 Total (Theory) 80 Practical/Project/Internal 20 Grand Total 100 🧭 Preparation Tips MCQ Mastery: Section A is crucial—practice questions from every topic. Structured Answers: Prepare short and long answers for theory. Integrate Map Skills: Include labeled maps during Geography revision. Real-Life Examples: Link disasters to recent events, and economics to daily household budgets. Past Papers & Sample Tests: Solve previous years’ papers to familiarize yourself with pattern and timing.
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Social Science Introduction Class | Syllabus Discussion | Study Plan, Strategy & Blueprint
35:22
CLASS X SOCIAL SCIENCE DEMO
Class X ENGLISH
📝 Exam Pattern & Marking Scheme Total Marks: 100 Objective Section (Section A): 100 MCQs (from Grammar + Literature), attempt any 50 → 50 marks Subjective Section (Section B): 50 marks Short-answer questions (comprehension, grammar, vocabulary usage) Long-answer questions (essay, letter, notice, paragraph writing) Time Duration: 3 hours 📘 Textbooks & Reading Materials Panorama – Part II 8 Prose chapters (e.g. “The Pace for Living”, “Me and the Ecology Bit”…) 8 Poetry chapters (e.g. “God Made the Country”, “Polythene Bag”, etc.) Supplementary Reader – Footprints Without Feet 7–8 short stories (e.g. “January Night”, “Allergy”, “The Bet”, “Quality”, etc.) 📚 Section-wise Breakdown A. Literature (Prose & Poetry) – ~40 marks Comprehension and short-answer questions Extract-based explanation Long-answer type questions B. Grammar – ~20 marks Key areas tested: Tenses (all), Modals, Subject–Verb Agreement Active/Passive Voice, Direct/Indirect Speech Clauses, Prepositions, Conjunctions Antonyms, Synonyms, One-word substitutions Error correction & sentence transformation C. Composition (Writing Skills) – ~20 marks Essay writing (Argumentative, Descriptive, Narrative) Formal & Informal letters, Application, Notice Paragraph writing (60–80 words) Report writing (occasion/event) 🎯 Blueprint Summary Section Marks Notes Objective (MCQs) 50 Mix of grammar & literature questions Literature – Short Qs ~20 Prose & poetry comprehension Grammar & Translation ~20 Core grammar topics + translation Composition ~20 Essays, letters, notices, paragraphs Total = 100 marks 🧭 Preparation Tips MCQ Practice: Cover all prose, poetry, and grammar thoroughly. Extraction & Comprehension: Learn to analyze passages and explain lines. Grammar Drills: Focus on tense usage, voice, narration, and error correction. Writing Practice: Regularly write essays, letters, and notices. Past Papers: Familiarize yourself with the 100-question structure: choose any 50 MCQs then answer 50 subjective marks Vocabulary Building: Work on synonyms, antonyms, and one‑word substitutions. ✅ Final Checklist Panorama Prose (8 prose chapters) Panorama Poetry (8 poems) Supplementary (7 short stories) Grammar topics across latest pattern Writing: essays, letters, notices, paragraphs MCQ strategy + subjective answer practice
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English Introduction Class | Syllabus Discussion | Study Plan, Strategy & Blueprint
21:38
CLASS X ENGLISH DEMO
00:00
Class X HINDI
📝 परीक्षा पैटर्न और अंक वितरण कुल अंक: 100 अपठित गद्यांश: 20 अंक व्याकरण: 15 अंक रचना (लेखन कौशल): 15 अंक पाठ्यपुस्तक से प्रश्न: 40 अंक पूरक पाठ्यपुस्तक (वर्णिका): 10 अंक 📚 पाठ्यक्रम की मुख्य इकाइयाँ 1. अपठित गद्यांश (20 अंक) दो गद्यांश (एक साहित्यिक + एक वर्णनात्मक), प्रत्येक लगभग 250–300 शब्द प्रश्न: विषय-वस्तु, शीर्षक चयन, भाषिक संरचना, लघु उत्तर 2. व्याकरण — 15 अंक विषय वस्तु: संज्ञा, सर्वनाम, क्रिया, लिंग, वचन, वाक्यविन्यास संधि, समास, अलंकार, छंद लोकोक्ति, मुहावरे वाक्य सुधर, रिक्त स्थान पूर्ति आदि 3. रचना लेखन — 15 अंक निबंध लेखन: ~250–300 शब्द, सामाजिक/सांस्कृतिक/राजनीतिक/पर्यावरणीय विषय पत्र लेखन: औपचारिक और अनौपचारिक पत्र रिपोर्ट लेखन, अनुच्छेद लेखन आदि 4. पाठ्यपुस्तक “गोधूली” — 40 अंक गद्य खंड (20 अंक): लगभग 12 पाठ जैसे – श्रम विभाजन और जाति प्रथा, विष के दाँत, भारत से हम क्या सीखें, नाखून क्यों बढ़ते हैं?, नागरी लिपि, बहादुर, परंपरा का मूल्यांकन, शिक्षा और संस्कृति आदि काव्य खंड (20 अंक): लगभग 12 कविताएँ जैसे – गुरू नानक पद, स्वदेशी, भारत माता, जनतंत्र का जन्म, हिरोशिमा, एक वृक्ष की हत्या, नौबतखाने में इबादत, मेरे बिना तुम प्रभु आदि 5. पूरक पाठ्यपुस्तक “वर्णिका भाग‑2” — 10 अंक लगभग 5 लघु कहानियाँ जैसे – दहीवाली मंगामा, ढहते विश्वास, माँ, नगर, धरती कब तक भूमेगी आदि 🔍 अंक वितरण सारांश इकाई अंक अपठित गद्यांश 20 व्याकरण 15 रचना लेखन 15 गद्य + काव्य (“गोधूली”) 40 पूरक पुस्तक (“वर्णिका”) 10 कुल 100 📌 तैयारी के सुझाव अपठित गद्यांश अभ्यास: समय-सीमा में पढ़कर मैदान में उतरें व्याकरण नियम: नियमित अभ्यास जैसे वाक्य सुधार, समास–संधि, छंद आदि रचना लेखन: निबंध/पत्र/रिपोर्ट/अनुच्छेद में मात्रा और शैली दोनो पर ध्यान दें पाठ्यपुस्तक व कविताएँ: गद्य: मुख्य पात्र, विचार, प्रवाह समझें कविता: भाव, अलंकार, काव्य-भाषा पर पकड़ बनाएं पूरक साहित्य: कहानियों की मुख्य कहानी, संदेश और भाषा शैली में महारत रखें समय प्रबंधन: पिछले वर्षों की प्रश्न-पत्र देखें और समय में हल करने की महारत पाएं
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Hindi Introduction Class | Syllabus Discussion | Study Plan, Strategy & Blueprint
00:00
CLASS X HINDI DEMO
33:37
CHAPTER 1 : भीमराव आंबेडकर का दृष्टिकोण – श्रम विभाजन और जाति प्रथा LEC 1
Class X SANSKRIT
📄 1. परीक्षा पैटर्न और अंक वितरण कुल अंक: 100 खंड अ (Objective / MCQ): 100 वस्तुनिष्ठ प्रश्नों में से 50 अंक चुने जाने होंगे — कुल 50 अंक खंड ब (विषयगत प्रश्न): अपठित गद्यांश – 13 अंक पत्र लेखन – 8 अंक अनुच्छेद लेखन – 13 अंक अनुवाद (हिंदी/संस्कृत) – 6 अंक लघु उत्तरीय प्रश्न – 16 अंक खंड ब का कुल = 56 अंक (ध्यान दें: अंक तालिका से कुल 106 अंक होंगे; बोर्ड संभवतः समायोजन करता है) 📘 2. पाठ्यपुस्तक: “पीयूषम् भाग 2” अ. मुख्य पाठ (14 पाठ) मङ्गलम् पाटलिपुत्रवैभवम् आलसकथा संस्कृतसाहित्ये लेखिकाः भारतमहिमा भारतीयसंस्काराः नीतिश्लोकाः कर्मवीरकथा स्वामी दयानन्दः मन्दाकिनीवर्णनम् व्याघ्रपथिककथा कर्णस्य दानवीरता विश्वशान्तिः शास्त्रकाराः ब. पूरक (अल्पपाठ्य – “द्रुतपाठय भाग 2”) इसमें लगभग 20 लघु पाठ/श्लोक–प्रार्थना शामिल हैं, जैसे "भवान्यष्टकम्", "अच्युताष्टकम्", "जयतु संस्कृतम्" आदि 🧠 3. व्याकरण (संस्कृत Grammar) वचन और धातु कारक प्रकार एवं विभक्ति उपसर्ग प्रक्र्रणम् प्रत्यय प्रक्र्रणम् संधि प्रक्र्रणम् समास प्रक्र्रणम् ✍️ 4. लेखन कौशल पत्र लेखन (औपचारिक / अनौपचारिक) अनुच्छेद / लघु निबंध लेखन अनुवाद (संस्कृत ↔ हिंदी) संवाद लेखन लघु उत्तरीय प्रश्न लेखन यह सभी अभ्यास “खंड ब” के अंदर आते हैं 📊 5. संरचना सारांश खंड / विषय विषयवस्तु अनुमानित अंक Objective (खंड अ) 100 MCQs → 50 अंक 50 अपठित गद्यांश 1 गद्यांश (अनुभव आधारित) 13 पत्र लेखन औपचारिक / अनौपचारिक 8 अनुच्छेद लेखन 1 अनुच्छेद 13 अनुवाद हिंदी ↔ संस्कृत 6 लघु उत्तरीय प्रश्न व्याकरण, संक्षिप्त प्रश्न 16 कुल (Objective + Subjective) — 106 (समायोजित) 🎯 6. तैयारी के सुझाव पीयूषम् (मुख्य पाठ): सभी 14 पाठों का विवरणात्मक अध्ययन करें – प्रमुख पात्र, संदेश, कठिन शब्द, वाक्य संरचना पर ध्यान दें। पूक कम से पूरक पाठ, श्लोकों/प्रार्थनाओं की समझ रखें। व्याकरण नियम: संधि, समास, विभक्ति, उपसर्ग–प्रत्यय अभ्यास करें। MCQ अभ्यास: वस्तुनिष्ठ प्रश्नों के लिए नियमित टेस्ट दें। लेखन कौशल: पत्र, अनुच्छेद व अनुवाद का समयबद्ध अभ्यास करें। अपठित गद्यांश: रोज अभ्यास से तेज़ी व समझ बढ़ाएँ। मॉडल प्रश्न पत्र और पिछली परीक्षाओं से परीक्षा पैटर्न समझें और समय प्रबंधन का अभ्यास करें।
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Sanskrit Introduction Class | Syllabus Discussion | Study Plan, Strategy & Blueprint
CLASS X SANSKRIT DEMO
Class X URDU
📝 امتحانی خاکہ (Total Marks: 100) حصہ اول (معروضی سوالات) – 50 نمبر 50 معروضی سوالات (Multiple Choice Questions) ہر سوال کا ایک نمبر حصہ دوم (تفصیلی سوالات) – 50 نمبر نثری پیرا گراف فہمی شاعری (اشعار کی تشریح) قواعد (گرامر) ترجمہ انشائیہ/مضمون، خط، درخواست، پیراگراف نویسی 📘 نصابی کتاب (اردو لازمی) 📖 1. نثر (Prose) کچھ اہم اسباق درج ذیل ہیں (تبدیلی ممکن ہے): خلیفہ ہارون الرشید پہلا درس نئی روشنی اخوت و محبت شیر اور شکاری والدین کی خدمت بہادر بچہ خودی کی پہچان (ہر سبق سے معانی، تشریح، خلاصہ اور سوالات) 📜 2. شاعری (Poetry) چند منتخب نظمیں و غزلیں: علامہ اقبال کی "لب پہ آتی ہے دعا بن کے تمنا میری" جوش ملیح آبادی اکبر الہ آبادی میر تقی میر حسرت موہانی اختر شیرانی (تشریح، مرکزی خیال، الفاظ کے معانی) ✍️ 3. قواعد (Grammar) اسم، فعل، صفت واحد و جمع مذکر و مؤنث جملوں کی اقسام ضمیر، حرف تراکیب محاورات و ضرب الامثال املاء کی درستی 🖋️ 4. انشاء نویسی (Composition) مضمون نویسی (ماحول، تعلیم، سائنس، وقت کی قدر، دیہاتی زندگی) خط و درخواست (والدین، دوست، اسکول پرنسپل کو) پیراگراف نویسی ترجمہ (اردو ↔ ہندی) مروجہ طرز پر سوالات کے جوابات لکھنا 📚 امتحان کی تیاری کے لیے تجاویز سبق فہمی: ہر سبق کے خلاصے، مرکزی خیال، سوالات و جوابات پر عبور حاصل کریں۔ گرامر: روزانہ قواعد کے اصولوں کو دہرائیں اور مشق کریں۔ معروضی سوالات: 50 MCQs کی پریکٹس روزانہ کریں۔ انشاء: مضمون و خطوط کی مشق کریں، پرانے امتحانات کے مطابق۔ ترجمہ: ہندی جملوں کا اردو میں اور اردو کا ہندی میں ترجمہ سیکھیں۔ ✅ خلاصہ حصہ عنوان نمبر حصہ اول معروضی سوالات (MCQ) 50 حصہ دوم تشریح، انشاء، ترجمہ، قواعد 50 کل نمبر 100
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Hindi Introduction Class | Syllabus Discussion | Study Plan, Strategy & Blueprint
CLASS X URDU DEMO
10th बिहार मैट्रिक परीक्षा 2026

🧪 1. Exam Pattern & Blueprint
Theory Paper: 80 marks, duration: 2 hr 45 min

Section A (Objective): 80 MCQs; attempt any 40 → 40 marks

Section B (Subjective):

Physics: 8 short-answer (SA) pick 4 + 1 long-answer (LA) → 4×2 + 6 = 14 marks

Chemistry: 8 SA pick 4 + 1 LA → 4×2 + 5 = 13 marks

Biology: 8 SA pick 4 + 1 LA → 4×2 + 5 = 13 marks

Practicals: 20 marks (conducted before theory)

Internal Assessment: 20 marks, school-based

Total weightage: 100 marks

📘 2. Unit-wise Weightage & Topics
Unit # Unit Name Marks*
I Chemical Compounds (Chemistry) ~20–25
II The Living World (Biology) ~20
III Electricity & its Effects (Physics) ~10–18
IV Light & Communication (Physics) ~8–12
V Natural Resources & Environment ~8

📚 3. Detailed Topics by Subject
🔬 Physics
Light (Reflection & Refraction)

Spherical mirrors, lenses, image formation

Human eye; defect types and correction

Dispersion & colorful world

Electricity

Ohm’s Law, resistance, series & parallel circuits

Magnetic Effects of Current

Magnetic fields, electromagnetic induction, motor/generator basics

Sources of Energy

⚗️ Chemistry
Chemical Reactions & Equations

Types & balancing reactions

Acids, Bases & Salts

Properties, pH scale, salt preparations

Metals & Non‑Metals

Properties, reactivity series, corrosion & prevention

Carbon Compounds

Basics of organic chemistry; hydrocarbons

Periodic Classification

Mendeleev’s & modern periodic table; periodic trends

🌱 Biology
Life Processes

Nutrition, respiration, circulation, excretion

Control & Coordination

Nervous system, hormones

Reproduction

Human & plant reproduction; sexual vs asexual

Heredity & Evolution

Mendelian genetics, evolutionary theories

Our Environment & Natural Resources

Ecosystems, conservation, sustainable development
🛠️ 4. Practicals & Internal Assessment
Lab work covering key experiments from all physics, chemistry, and biology topics.

Internal assessments may include experiments, project work, assignments, and class participation.

📅 5. Preparation Strategy
Understand blueprint – focus more on high-weight units (Chemistry, Biology, Electricity).

MCQ practice – essential since 40 MCQs carry 40 marks.

Strengthen theory – write short and long answers for all core concepts.

Hands-on practice – perform lab experiments thoroughly.

Revision – solve past-year and model papers to get familiar with question types.

Concept clarity – focus on understanding over rote memorization, as per board guidance

📄 6. Quick Topic Checklist
[ ] Physics: Light, Eye, Electricity, Magnetism, Energy sources

[ ] Chemistry: Reactions, Acids/Bases/Salts, Metals, Carbon compounds, Periodic Table

[ ] Biology: Life processes, Coordination, Reproduction, Genetics, Environment

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