Author name: Alka Jaiswal

CBSE English Medium Class 12, Class 12th English Medium Chemistry Notes

Class 12th Chemistry Haloalkanes and Haloarenes Notes

🧴 1. Haloalkanes (Alkyl halides) 🧪 Nomenclature: Preparation of Haloalkanes: Chemical Properties of Haloalkanes: Industrial Uses of Haloalkanes: 🌿 2. Haloarenes (Aromatic halides) 🌸 Nomenclature: Preparation of Haloarenes: Electrophilic Substitution Reactions in Haloarenes: Chemical Properties of Haloarenes: Industrial Uses of Haloarenes: 🌸 Conclusion 🧴 🌿

CBSE English Medium Class 12, Class 12th English Medium Chemistry Notes

Class 12th Chemistry Alcohols, Phenols, and Ethers Notes

🍃 1. Alcohols (Functional Group -OH) 💧 Structure and Functional Group: Preparation of Alcohols: Chemical Properties of Alcohols: Uses of Alcohols: 🌿 2. Phenols (Functional Group -OH attached to an aromatic ring) 🌺 Structure and Functional Group: Preparation of Phenols: Acidity of Phenols: Chemical Reactions of Phenols: Uses of Phenols: 🌸 3. Ethers (Functional Group

CBSE English Medium Class 12, Class 12th English Medium Chemistry Notes

Class 12th Chemistry Aldehydes, Ketones, and Carboxylic Acids Notes

🌿 Introduction to Aldehydes, Ketones, and Carboxylic Acids 🍃 Aldehydes, ketones, and carboxylic acids are important organic compounds with distinct functional groups and diverse applications in fragrances, flavours, and pharmaceuticals. Their preparation methods, reactivity, and uses make them integral to several industries. ⚗️ 1. Aldehydes (Functional Group -CHO) 🍂 🧪 Structure and Functional Group 🔬

CBSE English Medium Class 12

Class 12th Chemistry Organic Compounds Containing Nitrogen Notes

🌿 Introduction to Nitrogen-Containing Organic Compounds 🧑‍🔬 Organic compounds containing nitrogen are of immense importance in the pharmaceutical, dye, and agricultural industries. The key nitrogen compounds studied in this unit include: These compounds exhibit diverse properties and play critical roles in various chemical reactions. ⚗️ 1. Amines (Basic Nitrogen Compounds) 🍃 🧪 Structure of Amines

CBSE English Medium Class 12, Class 12th English Medium Chemistry Notes

Class 12th Chemistry Biomolecules Notes

🌟 What are Biomolecules? 🧑‍🔬 🌿 Types of Biomolecules 🌱 1. 🍞 Carbohydrates (Energy Powerhouses) 2. 🍖 Proteins (Body Builders) 3. 🧈 Lipids (Fatty Energy Sources) 4. 🧬 Nucleic Acids (Genetic Blueprints) ✨ Enzymes and Their Mechanisms of Action 🔬 🌟 Vitamins, Hormones, and Their Biological Significance 💊 1. 🌞 Vitamins (Micronutrient Warriors) 2. 🧑‍🔬

CBSE English Medium Class 12, Class 12th English Medium Biology Notes

Class 12th Biology Ecology: The Study of Ecosystems Notes

1. Definition of Ecology 🌱 2. Levels of Organization 🔬 🌿 Ecosystem Structure and Function 🌿 1. Components of Ecosystems 🌱🌍 2. Energy Flow in Ecosystems 💡 3. Energy Transfer Efficiency 🌞 🌱 Biogeochemical Cycles 🌍 1. Water Cycle 💧 2. Carbon Cycle 🌳 3. Nitrogen Cycle 🌾 🌍 Environmental Issues 🌍 1. Biodiversity and

CBSE English Medium Class 12, Class 12th English Medium Biology Notes

Class 12th Biology Human Health and Disease- Biology and welfare Notes

1. Pathogens and Diseases 🦠 2. Immune System and Immunity 🛡️ 3. Vaccination 💉 4. Human Diseases and Their Prevention 🔬 🌾 Improvement in Food Production 🌾 1. Plant Breeding 🌱 2. Tissue Culture 🧫 3. Biotechnology in Agriculture 🧬 🧬 Microorganisms in Human Welfare 🧬 1. Microbes in Food Production 🍞 2. Microorganisms in

CBSE English Medium Class 12, Class 12th English Medium Biology Notes

Class 12th Biology Biotechnology: Principles and Techniques Notes

🌟 Biotechnology: Principles and Techniques 🌟 🌱 Applications of Biotechnology 🌱 1. In Medicine 💉 2. In Agriculture 🌾 3. In Industry 🏭 🔬 Genetic Engineering in Animals 🐄 🌎 Environmental Applications 🌎 ⚖️ Ethical and Social Issues in Biotechnology ⚖️ Summary 📝 Biotechnology is a rapidly advancing field with applications in medicine, agriculture, industry,

CBSE English Medium Class 12, Class 12th English Medium Biology Notes

Class 12th Biology Genetics and Evolution Notes

📌 INTRODUCTION 🔬 PART 1: PRINCIPLES OF INHERITANCE AND VARIATION 🌿 Gregor Mendel – Father of Genetics 🟢 Mendel’s Laws of Inheritance 1️⃣ Law of Dominance – One allele is dominant over the other.2️⃣ Law of Segregation – Alleles separate during gamete formation.3️⃣ Law of Independent Assortment – Genes for different traits assort independently. 🌼

CBSE English Medium Class 12, Class 12th English Medium Biology Notes

Class 12th Biology Reproduction Notes

🔬 Introduction Reproduction is the biological process by which organisms produce their offspring. It ensures the continuity of species and can be of two types: 🌿 ASEXUAL REPRODUCTION 🔹 Features of Asexual Reproduction ✅ Single parent involved.✅ Offspring are genetically identical (clones).✅ No gametes or fertilization involved.✅ Fast process, common in unicellular organisms and plants.

CBSE English Medium Class 12, Class 12th English Medium Biology Notes

Class 12th Biology Plant Physiology Notes

🌱 Introduction Plant physiology deals with how plants function, including processes like photosynthesis, respiration, transpiration, and transport of nutrients. These processes help plants grow, develop, and survive. ☀️ Photosynthesis – The Life Process of Plants 👉 Definition: The process by which green plants make their own food using sunlight, carbon dioxide, and water. 🟢 Equation:

CBSE English Medium Class 12, Class 12th English Medium Biology Notes

Class 12th Biology Human Physiology Notes

🔬 Introduction Human physiology is the study of how different systems in the body function and work together to sustain life. The human body has several organ systems, each performing vital roles. 🫁 The Human Digestive System 👉 Function: Converts food into simpler substances for absorption and energy production.👉 Main Organs: 📝 Key Concept: Digestion

CBSE English Medium Class 10, Class 10th English Medium Science Notes

Class 9th Science Tissues Notes

Introduction 🔬 A tissue is a group of similar cells performing a specific function.🌿 In plants, tissues provide support & transport.🦁 In animals, tissues perform movement, protection, and coordination. Tissues are broadly classified into:✔️ Plant Tissues 🌱✔️ Animal Tissues 🦠 Plant Tissues 1. Meristematic Tissues (Growth Tissues) 📌 These tissues have actively dividing cells found

CBSE English Medium Class 11, Class 11th English Medium Biology Notes

Class 11th Biology Biological Classification Notes

Introduction Biological classification helps in organizing organisms systematically. It is necessary for:✔️ Understanding evolutionary relationships.✔️ Easier identification and nomenclature. 🌿 Aristotle classified organisms into plants and animals.📜 Carl Linnaeus proposed the two-kingdom classification.🔬 R.H. Whittaker introduced the five-kingdom classification in 1969.🧬 Carl Woese proposed the three-domain system based on RNA sequencing. Five-Kingdom Classification (Whittaker, 1969)

CBSE English Medium Class 10, Class 10th English Medium Science Notes

Class 9th Science Structural Organisation in Plants and Animals Notes

Introduction The chapter “Structural Organisation in Animals and Plants” helps us understand how living organisms are built, from the cellular level to tissues, organs, and organ systems. It highlights the differences and similarities in the structural complexity of plants and animals. I. Structural Organisation in Plants 1. Tissues in Plants Plants are multicellular organisms with

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