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20
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A black viscous mixture of hydrocarbons obtained naturally or as a residue from petroleum distillation. It is used for road surfacing and roofing
coal
bitumen
kerosene
petrol
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seesaw
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star
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gift
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banana
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20
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When the hydrocarbon change is longer, what is true?
the boiling point decreases
the more energy it creates
the density decreases
the viscosity increases
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10
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What is the chemical formula of heptane?
C7H16
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15
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What are the 3 main uses of oil?
As domestic and industrial fuel, as lubricant and as a material in the petrochemical industry
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10
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What was coal 300 million years ago?
Dead plants on a Swamp      (a plant)
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seesaw
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rocket
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fairy
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thief
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15
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What is the difference in molecular fromula between ethane and propane?
CH2 (propane has one more carbon group)
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25
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What are 2 major problems caused by incomplete combustion compared to complete combustion?
1) creating soot which creates more air pollution 2) creation of carbon monoxide gas
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10
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How much natural gas do we use at industries?
54%
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20
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For what is coal used for? (Say 5)
Electricity Generation , Metal Production,Cement Production ,Gasification and Liquefaction, Chemical Production, Paper, Textile and Glass production
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10
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What is the chemical formula of pentane?
C5H12
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thief
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gift
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fairy
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thief
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monster
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star
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fairy
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thief
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15
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What acid is made when sulfur dioxide is mixed with water?
Sulfuric acid
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15
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What is natural gas?
Natural gas is a hydrocarbon mixture of light gases of natural origin. Example: methane
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