Question

BCS nerve cell, bone
Q.6 Classify the following Substances according to the table given below:
2.6 Substances Solid Fuel
Gaseous
Liquid Fuel
Wood
Coke
Natural Gas
Coal
LPG
Kerosene
Petrol
​

Answer 1

Introduction

People generally use wood, cowdung cakes, crop residues, kerosene oil, coke or LPG gas to cook food. For ruining vehicles, we use petrol or diesel oil. In factories, we use coal or fuel oil or natural gas.

The materials, such as wood, coke, LPG (liquid petroleum gas), petrol, diesel, natural gas have one property [n common, i.e., they produce heat on burning which is then put into different uses. Furthermore, some materials on burning produce flame and some do not. For example, a candle or coal gas on burning produces a flame, but not the coal or charcoal. So, let us study the chemical process of burning and the types of flame produced during this process.

Combustion