MEDIUM
8th CBSE
IMPORTANT
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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
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Very Short Answer Type Questions>Q 17
Name the very poisonous gas produced by incomplete combustion of fuels.(Mention the IUPAC name.)
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Very Short Answer Type Questions>Q 18
Name the fuel which is gradually replacing petrol and diesel in automobiles. (Write the full name.)
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Very Short Answer Type Questions>Q 19
Name two substances having low ignition temperatures and two having high ignition temperatures.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Very Short Answer Type Questions>Q 20
A fuel must be heated to its _____ before it starts burning.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Very Short Answer Type Questions>Q 20
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
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Very Short Answer Type Questions>Q 20
The fire produced by burning oil cannot be controlled by _____.
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Very Short Answer Type Questions>Q 20
A liquid fuel used in homes is _____. (wood / kerosene)
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Very Short Answer Type Questions>Q 20
The amount of heat evolved when 1 kg of a fuel is burnt completely is called its _____. (calorific value / ignition temperature)