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For 1st PUC (Pre-University Course) Physics, the first chapter is typically "Physical World" according to the syllabus followed in Karnataka. Here are some important topics and potential important questions from this chapter: ∆ Important Topics: - Physics and Its Significance - Branches of Physics - Classical Physics - Modern Physics - Scientific Method and Measurement - Units and Dimensions /Importance of Physics in Everyday Life ∆ Important Questions: 1-Define Physics and its significance in understanding the natural world. 2-Differentiate between classical and modern physics. Provide examples of each. 3-Discuss the scientific method and its steps. 4-What are the different types of physical quantities? Explain with examples. 5-Explain the concept of SI units and why they are important in measurements. 6-What is dimensional analysis? Provide an example. 7-How is physics interrelated with other sciences? Give examples. 8-Discuss the historical devel...

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1. Physics Chapter 1: Physical World and Measurement Key Concepts: Introduction to physics and its branches Fundamental and derived quantities SI units and measurement Accuracy, precision, and significant figures Sample Important Questions: Define physics and explain its importance in our daily life. Differentiate between scalar and vector quantities with examples. Explain the concept of measurement and describe the tools used for measuring length and mass. 2. Chemistry Chapter 1: Some Basic Concepts of Chemistry Key Concepts: Mole concept and molar mass Stoichiometry and balancing chemical equations Limiting reactants and percent yield Sample Important Questions: Define the mole and explain its significance in chemistry. How do you calculate the empirical formula from percent composition? Explain the concept of limiting reactants with an example. 3. Biology Chapter 1: Diversity in Living World Key Concepts: Classification and the importance of taxonomy Major k...