Is Matter Around Us Pure
14 solved questions from Class 9 Science, each with the full working. Tap any question to see the step-by-step solution.
- 1 What is the fundamental scientific concept introduced in the chapter 'Is Matter Around Us Pure'? medium MCQ Key Concept & Definition
- 2 Which of the following is an important application or observation related to 'Is Matter Around Us Pure'? easy MCQ Practical Application
- 3 What primary question does the chapter 'Is Matter Around Us Pure' aim to answer? medium MCQ Core Scientific Inquiry
- 4 Why is the study of 'Is Matter Around Us Pure' essential for students in class-9? hard MCQ Importance & Significance
- 5 Which key practice is recommended while studying topics in 'Is Matter Around Us Pure'? medium MCQ Scientific Method
- 6 What is the primary topic or theoretical principle explored in 'Is Matter Around Us Pure' (Class 9 SCIENCE)? medium MCQ Chapter Core Principle
- 7 Which key mechanism or analytical rule is highlighted in 'Is Matter Around Us Pure'? medium MCQ Key Analytical Mechanism
- 8 Which of the following is a pure substance? easy MCQ 1 mark Identify pure substance
- 9 A 100 g sample of crude oil contains 98.5 g of pure hydrocarbons and 1.5 g of impurities. What is the purity percentage of the sample? medium 3 marks Calculate purity
- 10 A 150 g sample of iron ore contains 120 g of pure iron and 30 g of impurities. Calculate the purity percentage of iron in the sample. medium 2 marks Purity calculation
- 11 A 200 g sample of refined sugar contains 1.5 g of impurities. Calculate the purity percentage of the sugar. medium 2 marks Purity calculation with impurity mass
- 12 Which of the following separation techniques is most suitable for separating a mixture of benzene and toluene? medium MCQ 3 marks Separation techniques
- 13 A 100 g sample of refined table salt (NaCl) contains 5 g of impurities. Calculate the purity percentage of the salt. easy 2 marks Purity calculation
- 14 A 300 g sample of refined copper has 3 % impurities by weight. After a refining process that removes 70 % of the impurities, what is the new purity percentage of the copper? hard 4 marks Purity after purification