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I'm happy to help you generate a question paper for CBSE level Class 9th Science. However, I'm a text-based AI and do not have the capability to provide PDF files. But I can provide you with the question paper in text format, which you can easily convert to a PDF. Here is the question paper: **Class 9th Science Question Paper (40 marks)** **Instructions:** * The question paper consists of 10 multiple-choice questions (10 marks), 2 short answer questions (4 marks), and 2 essay prompts (26 marks). * All questions are compulsory. * Use only non-programmable scientific calculator. * Figures to the right indicate full marks. **Multiple Choice Questions (10 marks)** 1. Which of the following is a characteristic of a solid? a) Has a definite shape and volume b) Takes the shape of its container c) Has a definite volume but no definite shape d) Has neither a definite shape nor a definite volume 2. What is the term for the process by which a solid changes directly to a gas? a) Melting b) Boiling c) Sublimation d) Deposition 3. Which of the following is a homogeneous mixture? a) Soil b) Water c) Salt solution d) Sand 4. What is the term for the amount of matter in an object? a) Mass b) Weight c) Volume d) Density 5. Which of the following states of matter has a definite shape and volume? a) Solid b) Liquid c) Gas d) Plasma 6. What is the term for the temperature at which a solid changes to a liquid? a) Melting point b) Boiling point c) Freezing point d) Condensation point 7. Which of the following is a characteristic of a gas? a) Has a definite shape and volume b) Takes the shape of its container c) Has a definite volume but no definite shape d) Has neither a definite shape nor a definite volume 8. What is the term for the process by which a liquid changes to a gas? a) Evaporation b) Condensation c) Melting d) Boiling 9. Which of the following is a heterogeneous mixture? a) Salt solution b) Soil c) Water d) Air 10. What is the term for the ratio of mass to volume of a substance? a) Density b) Mass c) Volume d) Weight **Short Answer Questions (4 marks)** 1. What is the difference between a homogeneous and a heterogeneous mixture? Give an example of each. 2. Describe the process of sublimation. **Essay Prompts (26 marks)** 1. **10 marks**: Describe the characteristics of solids, liquids, and gases. Explain the changes that occur when a solid is heated to its melting point and then to its boiling point. 2. **16 marks**: Explain the concept of purity and how it is related to mixtures and compounds. Describe the different methods of separating mixtures and give examples of each. **Answer Key** Multiple Choice Questions: 1. a) Has a definite shape and volume 2. c) Sublimation 3. c) Salt solution 4. a) Mass 5. a) Solid 6. a) Melting point 7. d) Has neither a definite shape nor a definite volume 8. d) Boiling 9. b) Soil 10. a) Density **Rubric for Essay Prompts** * Content (8 marks): + Description of characteristics of solids, liquids, and gases (3 marks) + Explanation of changes that occur when a solid is heated (3 marks) + Clarity and coherence (2 marks) * Organization and coherence (4 marks): + Logical flow of ideas (2 marks) + Use of transitions and connections (1 mark) + Clarity of expression (1 mark) * Grammar and mechanics (2 marks): + Accuracy of grammar and punctuation (1 mark) + Neatness and legibility (1 mark) * Depth and insight (12 marks): + Depth of understanding of concepts (6 marks) + Insight and analysis (4 marks) + Use of examples and illustrations (2 marks) You can adjust the marks according to your requirements. I hope this helps! Let me know if you need any further assistance. To get PDF just copy and pase in Ms word and convert it to PDF or use any online tools.

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