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Lesson 3: Iron Ore Extraction, Reduction Furnaces and Alloy Classifications — Picture questions (exam style)

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  • Questions count: 22
  • Passing grade: 60%
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1.
10 t of Fe₃O₄ ore (80% pure) goes into the blast furnace with 85% reduction efficiency; all the iron becomes steel with 1.0% carbon. Which option is correct? (Fe = 56, O = 16, C = 12)
10 t of Fe₃O₄ ore (80% pure) goes into the blast furnace with 85% reduction efficiency; all the iron becomes steel with 1.0% carbon. Which option is correct? (Fe = 56, O = 16, C = 12)
iron produced = 4.92 t, steel (C = 1.0%) possible = 4.97 t
iron produced = 1.93 t, steel (C = 1.0%) possible = 4.92 t
iron produced = 7.24 t, steel (C = 1.0%) possible = 9.85 t
iron produced = 5.79 t, steel (C = 1.0%) possible = 4.97 t
2.
Which statement about extracting iron in the furnace shown is NOT correct?
Which statement about extracting iron in the furnace shown is NOT correct?
limestone decomposes and forms calcium silicate slag
molten iron floats on the slag
carbon monoxide is the main reducing agent
roasting removes moisture and oxidises impurities
3.
What mass of iron (tonnes) can in theory be extracted from 5 t of magnetite ore (Fe₃O₄) of 80% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 5 t of magnetite ore (Fe₃O₄) of 80% purity? (Fe = 56, O = 16, C = 12, H = 1)
4.06 t
2.90 t
3.62 t
0.966 t
4.
The diagram shows the lattice of an alloy (Fe–C). What type of alloy is it?
The diagram shows the lattice of an alloy (Fe–C). What type of alloy is it?
substitutional alloy
a physical mixture of powders
intermetallic compound
interstitial alloy
5.
What mass of iron (tonnes) can in theory be extracted from 1 t of haematite ore (Fe₂O₃) of 65% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 1 t of haematite ore (Fe₂O₃) of 65% purity? (Fe = 56, O = 16, C = 12, H = 1)
0.227 t
0.455 t
0.637 t
0.700 t
6.
The diagram shows the lattice of an alloy (Fe₃C). What type of alloy is it?
The diagram shows the lattice of an alloy (Fe₃C). What type of alloy is it?
substitutional alloy
a physical mixture of powders
intermetallic compound
interstitial alloy
7.
What mass of iron (tonnes) can in theory be extracted from 10 t of haematite ore (Fe₂O₃) of 90% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 10 t of haematite ore (Fe₂O₃) of 90% purity? (Fe = 56, O = 16, C = 12, H = 1)
3.15 t
8.82 t
6.30 t
7.00 t
8.
The diagram shows the lattice of an alloy (Fe–C (steel)). What type of alloy is it?
The diagram shows the lattice of an alloy (Fe–C (steel)). What type of alloy is it?
intermetallic compound
substitutional alloy
a physical mixture of powders
interstitial alloy
9.
What mass of iron (tonnes) can in theory be extracted from 100 t of siderite ore (FeCO₃) of 40% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 100 t of siderite ore (FeCO₃) of 40% purity? (Fe = 56, O = 16, C = 12, H = 1)
33.6 t
48.3 t
19.3 t
27.0 t
10.
What mass of iron (tonnes) can in theory be extracted from 50 t of siderite ore (FeCO₃) of 60% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 50 t of siderite ore (FeCO₃) of 60% purity? (Fe = 56, O = 16, C = 12, H = 1)
24.1 t
25.2 t
20.3 t
14.5 t
11.
What mass of iron (tonnes) can in theory be extracted from 5 t of limonite ore (2Fe₂O₃·3H₂O) of 85% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 5 t of limonite ore (2Fe₂O₃·3H₂O) of 85% purity? (Fe = 56, O = 16, C = 12, H = 1)
0.636 t
2.55 t
2.99 t
3.56 t
12.
The diagram shows the lattice of an alloy (Fe–N). What type of alloy is it?
The diagram shows the lattice of an alloy (Fe–N). What type of alloy is it?
intermetallic compound
substitutional alloy
interstitial alloy
a physical mixture of powders
13.
What mass of iron (tonnes) can in theory be extracted from 20 t of magnetite ore (Fe₃O₄) of 80% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 20 t of magnetite ore (Fe₃O₄) of 80% purity? (Fe = 56, O = 16, C = 12, H = 1)
3.86 t
16.2 t
11.6 t
14.5 t
14.
What mass of iron (tonnes) can in theory be extracted from 2 t of haematite ore (Fe₂O₃) of 40% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 2 t of haematite ore (Fe₂O₃) of 40% purity? (Fe = 56, O = 16, C = 12, H = 1)
0.280 t
0.784 t
0.560 t
1.40 t
15.
The diagram shows the lattice of an alloy (Fe–Ni). What type of alloy is it?
The diagram shows the lattice of an alloy (Fe–Ni). What type of alloy is it?
a physical mixture of powders
interstitial alloy
intermetallic compound
substitutional alloy
16.
What mass of iron (tonnes) can in theory be extracted from 20 t of limonite ore (2Fe₂O₃·3H₂O) of 90% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 20 t of limonite ore (2Fe₂O₃·3H₂O) of 90% purity? (Fe = 56, O = 16, C = 12, H = 1)
2.70 t
12.0 t
10.8 t
15.1 t
17.
What mass of iron (tonnes) can in theory be extracted from 1 t of limonite ore (2Fe₂O₃·3H₂O) of 65% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 1 t of limonite ore (2Fe₂O₃·3H₂O) of 65% purity? (Fe = 56, O = 16, C = 12, H = 1)
0.545 t
0.389 t
0.0973 t
0.599 t
18.
What mass of iron (tonnes) can in theory be extracted from 2 t of limonite ore (2Fe₂O₃·3H₂O) of 40% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 2 t of limonite ore (2Fe₂O₃·3H₂O) of 40% purity? (Fe = 56, O = 16, C = 12, H = 1)
0.479 t
0.120 t
1.20 t
0.671 t
19.
The diagram shows the lattice of an alloy (Fe–Cr). What type of alloy is it?
The diagram shows the lattice of an alloy (Fe–Cr). What type of alloy is it?
substitutional alloy
a physical mixture of powders
interstitial alloy
intermetallic compound
20.
What mass of iron (tonnes) can in theory be extracted from 50 t of limonite ore (2Fe₂O₃·3H₂O) of 90% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 50 t of limonite ore (2Fe₂O₃·3H₂O) of 90% purity? (Fe = 56, O = 16, C = 12, H = 1)
6.74 t
29.9 t
27.0 t
37.7 t
21.
What mass of iron (tonnes) can in theory be extracted from 100 t of limonite ore (2Fe₂O₃·3H₂O) of 75% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 100 t of limonite ore (2Fe₂O₃·3H₂O) of 75% purity? (Fe = 56, O = 16, C = 12, H = 1)
59.9 t
11.2 t
44.9 t
62.9 t
22.
What mass of iron (tonnes) can in theory be extracted from 10 t of limonite ore (2Fe₂O₃·3H₂O) of 70% purity? (Fe = 56, O = 16, C = 12, H = 1)
What mass of iron (tonnes) can in theory be extracted from 10 t of limonite ore (2Fe₂O₃·3H₂O) of 70% purity? (Fe = 56, O = 16, C = 12, H = 1)
5.99 t
5.87 t
1.05 t
4.19 t
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