Chemistry Class 9 Chapter 11: Environmental Chemistry - Air

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• Class 9
• Chemistry
• Chapter 11
• FBISE SSC-I

Chapter summary

Chapter 11 of Chemistry for Class 9 is called "Environmental Chemistry - Air". It covers 11 learning outcomes of the Federal Board syllabus. You will learn to: state that composition of clean, dry air is approximately; state the major sources of air pollutants.. Parhayi.com has 277 MCQs, 85 short questions and 24 long questions for this chapter.

Topics in this chapter

• State that composition of clean, dry air is approximately…
• State the major sources of air pollutants.…
• State the adverse effects of air pollutants…
• Explain how the greenhouse gasses carbon dioxide and…
• Describe the role of sulfur in the formation of acid rain…
• Describe the strategies to reduce the effects of major…
• Describe the role of NO and NO in the formation of acid…
• Explain how oxides of nitrogen form in car engines and…
• Define photosynthesis as the reaction between carbon…
• Analyze how to use tools to reduce personal exposure to…
• Identify high risk situations in life including those…

Sample questions

Try these questions from the chapter. The answers are for Premium students.

1. What two gases make up most of the air? (3 marks)
2. List some effects of global warming. (3 marks)
3. How does NO₂ directly form an acid in rainwater? Give the balanced equation. (3 marks)

What Premium gives you in this chapter

• 277 MCQs with answers and explanations
• 85 short questions with full answers
• 24 long questions with answers
• 14 Learn cards
• 33 Activities and games
• chapter tests that show your weak topics

Chemistry is the study of matter and how it changes. Learn the definitions first, then practise equations, balancing and numericals until they feel easy.