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Class 8 Science
Combustion And Flame
Quiz 2
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The calorific value of a fuel is expressed in a unit called
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kilojoule per kilogram
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kilojoule per litre
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kilojoule per gram
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kilogram per mililitre
Match the column
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p -> iv, q -> i, r -> ii , s ->iii
0%
p -> iii, q -> iv, r -> i , s ->ii
0%
p -> iv, q -> iii, r -> ii, s ->i
0%
p -> ii, q -> iv, r -> iii , s ->i
The substance that does not burn with flame is
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camphor
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charcoal
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LPG
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dry grass
The substance expected to have the highest ignition temperature out of the following is
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kerosene
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coal
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petrol
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alcohol
Combustion is
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Physical Process
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Chemical process
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Both of these
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None of these
The lowest temperature at which a substance catches fire is called its
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Burning temperature
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ignition temperature
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None of these
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inflammable temperature
Which gas is produced when sodium bicarbonate and concentrated sulphuric acid mix?
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Carbon monoxide
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Hydrogen
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Oxygen
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Carbon dioxide
What is the calorific value of biogas?
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1,50,000
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35,000-40,000
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23,000
0%
30,00,000
Which of the following is an example of gaseous fuel?
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Kerosene
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Petrol
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Natural gas
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Diesel
Which of the following is an example of primary fuel?
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Wood
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Charcoal
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Coke
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Coal tar
What is the full form of CNG?
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Combined Natural Gas
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Cover Nature Gasoline
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Compressed Natural Gas
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Consumption Nature Gas
Which of the following is the luminous zone of candle flame?
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Outermost Zone
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Innermost Zone
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Middle Zone
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All of these
Which of the following gas is required for complete combustion?
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Oxygen
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Carbon monoxide
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Carbon dioxide
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None of these
Which of the following gas is responsible for acid rain?
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Oxygen
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Helium
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Oxides
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Hydrogen
Which element particles form the particulate matter when they do not burn?
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Nitrogen particles
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Oxygen molecules
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Carbon particles
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Boron particles
Which disease can be caused due to the continuous inhalation of lead compounds?
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Diabetes
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Thyroid
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Gall Stones
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Cancer
which substance is also known as marsh gas?
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$CH_4$
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$CO_2$
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$CO$
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$NH_3$
which of the followings has the highest calorific value?
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LPG
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Coal
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Hydrogen
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Biogas
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