PB | Class9 | Science | Chapter 12 | Dhuni_01 (PSEB)

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PSEB (Punjab School Education Board) Class 9 Science Chapter 12 is titled "Dhuni" which translates to "Smoke". This chapter primarily deals with the concept of combustion and the chemical reactions involved in it.

The chapter begins by introducing the concept of combustion, explaining what it is and why it is important. It then goes on to discuss the different types of combustion, including rapid combustion, spontaneous combustion, and explosive combustion. The chapter also explores the role of oxygen in combustion and the chemical reactions involved in it.

Moving on, the chapter discusses the different fuels that can be used for combustion, including fossil fuels and biomass. It also touches upon the environmental impact of combustion, including air pollution and global warming.

The chapter ends with a discussion on fire safety and the measures that can be taken to prevent and control fires. It emphasizes the importance of being aware of the potential hazards of combustion and taking necessary precautions to ensure safety.

Overall, this chapter aims to provide students with a basic understanding of the concept of combustion and the chemical reactions involved in it. It also highlights the environmental impact of combustion and encourages students to be mindful of their consumption habits. Additionally, it stresses the importance of fire safety and awareness of potential hazards.