Exercises
E Doris James Science Solutions for Exercises
Simple step-by-step solutions to Exercises questions of Combustion and Flame from New Science Ahead 8. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.
Questions from Exercises with Hints & Solutions
Water should be used to extinguish a fire caused by electricity.
Pouring water on a flame not only cools the burning substance but also cuts off the air supply.
In a candle, wax melts and then burns. The change which results in the evolution of heat is the melting of wax.
In a candle flame, the innermost part is the hottest and the outermost part is the coolest zone.
Every combustible substance is a fuel.
Hydrogen gas has the highest calorific value among all fuels and it has no emissions other than water vapour.
Burning of coal in thermal power plants can result in acid rain.
Soot, a by-product of combustion, is not harmful for us as it contains only carbon.
