Burning and Combustion
Burning and Combustion: Overview
This topic covers concepts such as Combustion, Combustible Substances, Non-Combustible Substances, Necessity of Air for Combustion, Ignition Temperature, Ignition Temperature of Different Substances, Flame, Materials which Burn with Flame, etc.
Important Questions on Burning and Combustion
Which part of the flame is the hottest part?
The colour of the outermost zone of the flame is _____.
Goldsmith blow the innermost zone of the flame with a metallic blow-pipe for melting gold and silver.
Goldsmiths blow the outermost zone of a flame with a metallic blowpipe for melting gold and silver. Why do they use the outermost zone of the flame?
Which part of the flame is used by goldsmiths for melting the gold?
The temperature at which a particular substance catches fire in the presence of oxygen is called
Which of the following substance is non-combustible?
The substances which catch fire easily in the presence of oxygen are called
_____ is the process of burning of substances in the air with the evolution of heat and light.
The outermost non-luminous zone of a candle flame has a high temperature. This is because of
When an inverted tumbler is placed over a burning candle, the flame extinguishes after some time.
This happens due to the absence of
Identify the substance that does not produce flame while burning.
Which of the following substance is non-combustible in nature?
When magnesium ribbon burns in air, it produces
Which of the following zone of the candle flame contains the 'unburnt wax vapours'.
A wax candle burns with a yellow flame. The domestic gas burns with a blue flame. Why?
It is hard to ignite matchstick on rainy days. Why?
Why Kerosene stoves and Bunsen burners have small holes in them?
