Calorific Value
Calorific value is the amount of heat released when a substance is burned. It is usually expressed in kilojoules per kilogram (kJ/kg). The calorific value of a substance is determined by its chemical composition. Substances with a high calorific value, such as coal and oil, are good fuels because they release a lot of heat when burned. Substances with a low calorific value, such as water and wood, are not as good fuels because they release less heat when burned.
What is a Fuel? and Effects of Burning Fuels – NCERT Class-8 Notes
What is a Fuel? and Fuel Efficiency Burning of Fuels Leads to Harmful Products- Class 8 NCERT Revision Notes: Fuel is a substance that releases energy when burned. Fuels are used to power vehicles, generate electricity, and heat homes and businesses. There are many different types of fuels, including fossil fuels, renewable fuels, and nuclear fuels. Fuel efficiency is a measure of how efficiently a fuel is used. It is the ratio of the amount of energy produced by a fuel to the amount of energy that is consumed. Fuel efficiency is important because it can help to reduce fuel costs and emissions.
In this article, we will look into the meaning of fuel and fuel efficiency. We will also discuss about the burning of fuels leads to harmful products. It is an important concept in class 8 science. Students can go through this article to get comprehensive notes on fuel and fuel efficiency.
Table of Content
- What is Fuel?
- Types of Fuel
- Properties of Ideal Fuel
- What is Fuel Efficiency?
- Calorific Value
- Calorific Values of Different Fuels
- Burning of Fuels Leads to Harmful Products