EASY
8th CBSE
IMPORTANT
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LPG does not leave behind any residue after burning.

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Important Questions on Combustion and Flame

MEDIUM
8th CBSE
IMPORTANT
Carbon dioxide can cause harm to electrical equipment during the process of extinguishing a fire.
EASY
8th CBSE
IMPORTANT
Fire can be controlled by removing one of the essential requirements for combustion.
EASY
8th CBSE
IMPORTANT
The blue-coloured zone of the flame is the zone of incomplete combustion.
MEDIUM
8th CBSE
IMPORTANT
A combustible substance cannot burn as long its temperature is lower than its ignition temperature.
MEDIUM
8th CBSE
IMPORTANT
Water can extinguish all kinds of fires.
MEDIUM
8th CBSE
IMPORTANT
Global warming leads to a rise in the sea level.
EASY
8th CBSE
IMPORTANT
A yellow flame is produced by the complete combustion of fuel.
MEDIUM
8th CBSE
IMPORTANT
The process of rusting of iron is an example of slow combustion.