Lakhmir Singh for Class 8 Science Chapter 6 Combustion and Flames - Download Free PDF with Solution














FAQs on Lakhmir Singh Solutions for Class 8 Science Chapter 6 Combustion and Flames - PDF
1. What is a flame?
The visible portion of a combustion reaction emitting light is called a flame.
2. What is ignition temperature?
The temperature at which a substance starts burning is called its ignition temperature.
3. What is a non-combustible substance?
A non-combustible substance is a substance that does not catch fire readily.
Example: Sand. Sand does not catch fire that easily. It rather melts when the temperature is very high.
4. What are fuels?
Fuels are combustible substances that readily catch fire and promote burning or combustion.
Example: Kerosene. They are used for creating controlled combustions in engines and appliances for various purposes.
5. What is smoke?
The unburnt dispersed particles arising from a flame together are called smoke. The colour of smoke is determined by the particles in it.