Quiz
The blast furnace
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Questions in this quiz (21)
1When air is blown into the blast furnace the coke burns and oxidises. What is this reaction?
[blank_start]carbon + oxygen[blank_end] = [blank_start]carbon dioxide[blank_end]- Acarbon dioxide
- Bcarbon + oxygen
- Ccoke + oxygen
- Dcarbonmonoxide
- Eiron
- Firon + carbon dioxide
2Why is hot air blasted through the furnace?
- AThe air contains oxygen. The oxygen allows the coke (carbon) to burn and form carbon dioxide. This reaction gives out heat, i.e., it is exothermic, so it heats up the furnace.
- BThe air contains oxygen. The oxygen allows the iron ore to burn and form carbon dioxide. This reaction gives out heat, i.e., it is exothermic, so it heats up the furnace.
- CThe air contains oxygen. The oxygen allows the limestone to burn and form carbon monoxide. This reaction gives out heat, i.e., it is exothermic, so it heats up the furnace.
3What is dropped into the furnace?
- ALimestone
- Biron ore
- Ccoke
- Dslag
- Ecopper
- Fsteel
4What are the products of a carbon monoxide and iron oxide reaction?
- Airon and carbon dioxide
- Bslag and molten iron
- Coxygen and carbon
- Dcarbon and iron
- Eslag and carbon dioxide
5Is iron a solid, liquid or a gas when it forms at 1500 degrees Celsius?
- Asolid
- Bliquid
- Cgas
6What is molten slag (impurities) used for?
- Aslag isn't used for anything and must be disposed of when the reactions are complete
- Broads
- Cairplanes
- Dtools
7In which order do the following reactions happen?
- AIRON FORMS then CARBON MONOXIDE FORMS then CARBON DIOXIDE FORMS
- BCARBON DIOXIDE FORMS then CARBON MONOXIDE FORMS then IRON FORMS
- CCARBON MONOXIDE FORMS then CARBON DIOXIDE FORMS then IRON FORMS
- DIRON FORMS then CARBON DIOXIDE FORMS then CARBON MONOXIDE FORMS
- ECARBON DIOXIDE FORMS then IRON FORMS then CARBON MONOXIDE FORMS
- FCARBON MONOXIDE FORMS then IRON FORMS then CARBON DIOXIDE FORMS
8Carbon monoxide is the reducing agent used in the blast furnace.
How is carbon monoxide produced in the furnace?- Acarbon dioxide gas reacts with coke
- Blimestone and coke react
- Climestone and carbon dioxide gas react
- Dcoke reacts with oxygen
9When an element is reduced it loses electrons in the reaction
- ATrue
- BFalse
10limestone is a sedimentary rock
- ATrue
- BFalse
11What are the advantages to using limestone?
- Abright white in colour
- Beasy to mine
- Cneutralises acid
- Denvironment friendly
- Eeasily disposed of
- Fbreaks down in water
12Zone 3 - what is the main chemical reaction?
[blank_start]Fe[blank_end]2[blank_start]O[blank_end]3(s) + [blank_start]C[blank_end]O(g) → [blank_start]Fe(s)[blank_end] + [blank_start]CO[blank_end]2(g)
- AFe
- BO
- CC
- DFe(s)
- EO(g)
- FC(s)
- GCO
- HFeO
13Zone 2 - what is the main chemical reaction?
[blank_start]CO[blank_end]2(g) + [blank_start]C[blank_end](s) → [blank_start]2CO[blank_end](g)
- ACO
- BFeO
- CClO
- DC
- E2CO
- F2FeO
- G2ClO
14Zone 1 - what is the main chemical reaction?
[blank_start]C[blank_end](s) + [blank_start]O2[blank_end](g) → [blank_start]CO2[blank_end](g)
- AC
- BCO
- CFe
- DO2
- ECO2
- FFeO2
- GClO
- HCl
15Iron ore, limestone and [blank_start]coke[blank_end] are fed into the top of the furnace. Then [blank_start]hot air[blank_end] is blasted through the furnace. [blank_start]Oxygen[blank_end] in the hot air reacts with [blank_start]carbon[blank_end] to form [blank_start]carbon dioxide[blank_end] and then the carbon dioxide reacts with the coke to form [blank_start]carbon monoxide[blank_end]. This gas reacts with [blank_start]iron oxide[blank_end] changing it to [blank_start]iron[blank_end]. In the end the [blank_start]limestone[blank_end] reacts with the [blank_start]impurities[blank_end] to form [blank_start]slag[blank_end] which runs to the bottom of the furnace where it [blank_start]floats on top of[blank_end] the molten iron. During this process the [blank_start]molten iron[blank_end] runs to the bottom of the furnace where it is [blank_start]tapped off[blank_end].
- Acoke
- Bhot air
- COxygen
- Dcarbon
- Ecarbon dioxide
- Fcarbon monoxide
- Giron oxide
- Hiron
- Ilimestone
- Jimpurities
- Kslag
- Lfloats on top of
- Mmixes with
- Nmolten iron
- Otapped off
- Pseparated from the slag
16Then at high temperatures, carbon dioxide gas reacts with more coke and is therefore reduced. What is this reaction?
[blank_start]carbon dioxide + carbon[blank_end] = [blank_start]carbonmonoxide[blank_end]- Acarbon dioxide + carbon
- Bcarbon dioxide + coke
- Coxygen + carbon
- Dcarbon + dioxide + coke
- Ecarbonmonoxide
- Fcarbon dioxide
- Greduction
17How is carbon dioxide formed in a blast furnace?
[blank_start]carbon + oxygen[blank_end] --> [blank_start]carbon dioxide[blank_end]- Acarbon + oxygen
- Boxygen + coke
- Coxygen + iron
- Dcarbon + dioxide
- Ecarbon dioxide
18How is carbon monoxide formed in a blast furnace?
[blank_start]carbon dioxide + iron oxide[blank_end] --> [blank_start]carbon monoxide[blank_end]- Acarbon dioxide + iron oxide
- Bcarbon + carbon dioxide
- Ciron + carbon + oxygen
- Doxygen + carbon
- Ecarbon monoxide
- Fcarbon dioxide
19How is iron formed in a blast furnace?
[blank_start]carbon monoxide + iron oxide[blank_end] --> [blank_start]carbon dioxide + iron[blank_end]- Acarbon monoxide + iron oxide
- Biron + oxygen
- Ciron oxide + carbon dioxide
- Dcarbon dioxide + iron
- Eiron
- Foxygen + iron
20Write out the fully balanced equation for the reaction that the resulting gas will have with iron.
- When a number is placed after an element it is regarded as a subscript. Before an element it is regarded as a coefficient
[blank_start]Fe[blank_end][blank_start]2[blank_end][blank_start]O[blank_end][blank_start]3[blank_end] + [blank_start]3[blank_end][blank_start]CO[blank_end] ---> [blank_start]2[blank_end][blank_start]Fe[blank_end] + [blank_start]3[blank_end][blank_start]CO[blank_end][blank_start]2[blank_end]- AFe
- BCO
- CO
- DFe
- E2
- F3
- G4
- H3
- I2
- J4
- K3
- L2
- M4
- NCO
- OC
- PO
- QFe
- R2
- S3
- T4
- UFe
- VCO
- WO
- XC
- Y3
- Z2
- AA4
- ABCO
- ACC
- ADO
- AEFe
- AF2
- AG3
- AH4
21What was this reaction?
- Aoxidation
- Breduction
- Credox
- Dnone of those
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- The blast furnace quiz on IGCSE level
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- Imani :D
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