MEDIUM
8th CBSE
IMPORTANT
Earn 100

Name the main harmful gas released by the burning of fuels. (Carbon dioxide / Oxygen)

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Important Questions on Combustion and Flame
MEDIUM
8th CBSE
IMPORTANT
Name the very poisonous gas produced by incomplete combustion of fuels.(Mention the IUPAC name.)

EASY
8th CBSE
IMPORTANT
Name the fuel which is gradually replacing petrol and diesel in automobiles. (Write the full name.)

MEDIUM
8th CBSE
IMPORTANT
Name two substances having low ignition temperatures and two having high ignition temperatures.

EASY
8th CBSE
IMPORTANT
A fuel must be heated to its _____ before it starts burning.

EASY
8th CBSE
IMPORTANT
The most common supporter of combustion around us is _____. (Mention the name of the mixture which is necessary for our survival.)

MEDIUM
8th CBSE
IMPORTANT
The fire produced by burning oil cannot be controlled by _____.

EASY
8th CBSE
IMPORTANT
A liquid fuel used in homes is _____. (wood / kerosene)

MEDIUM
8th CBSE
IMPORTANT
The amount of heat evolved when kg of a fuel is burnt completely is called its _____. (calorific value / ignition temperature)
