Chemistry Combustion & Flame Part 2 (Fuel) Class 8 VIII | Summary and Q&A

65.6K views
November 10, 2015
by
LearnoHub - Class 11, 12
YouTube video player
Chemistry Combustion & Flame Part 2 (Fuel) Class 8 VIII

TL;DR

Combustible substances that release enough heat energy to be used for various purposes are called fuels. A good fuel should be easily available, cheap, burn easily to release a large amount of heat, and not leave undesirable residues to cause pollution.

Install to Summarize YouTube Videos and Get Transcripts

Questions & Answers

Q: What are combustible substances?

Combustible substances are substances that react with oxygen during combustion, releasing heat and light energy. They are also known as fuels.

Q: What are some examples of fuels?

Examples of fuels include coal, petroleum, natural gas, biogas, wood, and cow dung cakes. These substances are capable of generating a large amount of energy through combustion.

Q: What defines a good fuel?

A good fuel should be easily available, cheap, burn easily to release a large amount of heat, and not leave undesirable residues to cause pollution. These characteristics ensure the fuel is accessible, economical, and environmentally friendly.

Q: Why are cow dung cakes considered fuels despite their disadvantages?

Cow dung cakes are considered fuels because they generate a lot of energy when burned. However, their usage is associated with pollution and health risks, making them less preferred compared to other fuels.

Summary & Key Takeaways

  • Combustible substances that react with oxygen and release a lot of heat and light are called fuels.

  • Examples of fuels include coal, petroleum, natural gas, biogas, wood, and cow dung cakes.

  • A good fuel should be easily available, cheap, burn easily to release a large amount of heat, and not leave undesirable residues to cause pollution.

Share This Summary 📚

Summarize YouTube Videos and Get Video Transcripts with 1-Click

Download browser extensions on:

Explore More Summaries from LearnoHub - Class 11, 12 📚

Summarize YouTube Videos and Get Video Transcripts with 1-Click

Download browser extensions on: