9th Class Chemistry Notes Chapter 10 Long Questions PDF - Environmental Chemistry

Descriptive questions for Unit 10, Environmental Chemistry, of the new 9th class Chemistry course. Each question carries its textbook exercise reference, and the answers are written at the length an annual paper question expects, with the working shown where a calculation is involved.

• Class: 9th (Matric Part 1)
• Subject: Chemistry, English Medium
• Unit 10: Environmental Chemistry
• Question type: Descriptive, long answer questions
• Answer style: definitions, worked calculations and comparison tables under clear sub-headings
• Syllabus: New PECTAA syllabus for Punjab Boards, sessions 2025-26 and 2026-27
• Format: PDF, with the textbook figures and structures kept in

Ground covered by these descriptive answers:

• The major air pollutants set out in a table with their harmful effects
• Carbon dioxide, carbon monoxide, oxides of nitrogen and oxides of sulphur
• Hydrocarbons, particulate matter, ozone and smog as pollutants
• The greenhouse effect explained, and the gases responsible
• Why global warming is dangerous, and what can be done about it

Download it from taleem360.com and revise this unit whenever you get a spare half hour.