अध्याय 2-अदृश्य सजीव संसार: हमारी नग्न आँखों से परे 1. अदृश्य सजीव संसार हमारी आँखें बहुत छोटी वस्तुओं को सीधे नहीं देख सकतीं। सूक्ष्मदर्शी (Microscope) के आविष्कार से बहुत छोटे जीवों को देखना संभव हुआ। लेंस (Lens) छोटी वस्तुओं को बड़ा करके दिखाता है। सूक्ष्मदर्शी अत्यंत छोटी वस्तुओं को कई गुना बड़ा करके दिखाता है। … Read more
The Invisible Living World: Beyond Our Naked Eye 1. The Invisible Living World Our naked eyes cannot see extremely tiny objects. The invention of the microscope made it possible to see very small living organisms. A lens makes small objects appear larger. A microscope magnifies very tiny objects. Tiny living organisms that cannot normally be … Read more
अध्याय 1: परिचय (सांख्यिकी)(S) 1. अर्थशास्त्र की मूल समस्या: दुर्लभता (Scarcity) और चयन (Choice) असीमित इच्छाएँ (Unlimited Wants): मनुष्य की आवश्यकताएँ और इच्छाएँ असीमित होती हैं। सीमित संसाधन (Limited Resources): हमारी आवश्यकताओं को पूरा करने वाले संसाधन (जैसे आय, समय, प्राकृतिक संसाधन) सीमित/दुर्लभ होते हैं। वैकल्पिक उपयोग (Alternative Uses): इन सीमित संसाधनों के कई उपयोग … Read more
THE PORTRAIT OF A LADY … Read more
Geographical Diversity of India 1. India – A Land of Geographical Diversity India is the 7th largest country in the world and is part of Asia. It is called the Indian Subcontinent. India’s geographical diversity has influenced its climate, culture, agriculture, and way of life. 2. Major Physical Divisions of India India has five … Read more
Story: The Wit that Won Hearts King Krishnadeva Raya became angry with Queen Thirumalambal because she yawned while he was reciting his poem. The king thought she had insulted him and stopped talking to her. The queen asked Tenali Rama for help. Tenali Rama cleverly brought some “special paddy seeds” to the court and said … Read more
Chapter 2: Exploring Substances: Acidic, Basic, and Neutral Notes: Exploring Substances (Acidic, Basic, and Neutral) 1. Classification of Substances Substances in our surroundings are broadly classified into three categories based on their chemical nature: Acidic Substances: Substances that contain acids. They are generally sour to taste. Basic Substances: Substances that contain bases. They generally taste … Read more
Poem-1 Bharat Our Land Central Idea of the Poem The poem “Bharat Our Land” by Subramania Bharati is a tribute to India’s natural beauty, glorious history, rich culture, and spiritual heritage. The poet proudly praises the mighty Himalayas, the holy River Ganga, the sacred Upanishads, brave warriors, great sages, and the teachings of Lord Buddha. … Read more