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1. 
What is an alloy?
A.
An Alloy is a mixture of 2 or more chemical elements where the primary element is a metal
B.
An Alloy is a mixture of 2 or more metals where the primary element is carbon
C.
An Alloy is a mixture of 2 or more metals where the primary element is the steel
2. 
Iron alloys are created by adding ...
A.
Carbon
B.
Steel
C.
Iron
3. 
Iron alloys are...
A.
one of the types of alloys which contains carbon
B.
the unique type of possible alloys, which contains carbon
C.
made of steel
4. 
Iron alloys are classified depending on their...
A.
Concentration of carbon
B.
Quantity of carbon
C.
Concentration of steel
D.
Concentration of iron
5. 
If the concentration of carbon in an iron alloy is 0,008% - 0,03%, this is...
A.
Pure Iron
B.
Steel
C.
Cast Iron
6. 
If the concentration of carbon in an iron alloy is 0,03% - 1,76%, this is...
A.
Pure Iron
B.
Steel
C.
Cast Iron
7. 
If the concentration of carbon in an iron alloy is 1,76% - 6,67%, this is...
A.
Pure Iron
B.
Steel
C.
Cast Iron
8. 
Pure Iron contains...
A.
0,008% - 0,03% of Carbon
B.
0,03% - 1,76% of Carbon
C.
1,76% - 6,67% of Carbon
9. 
Steel contains...
A.
0,008% - 0,03% of Carbon
B.
0,03% - 1,76% of Carbon
C.
1,76% - 6,67% of Carbon
10. 
Cast Iron contains ...
A.
0,008% - 0,03% of Carbon
B.
0,03% - 1,76% of Carbon
C.
1,76% - 6,67% of Carbon
11. 
Pure Iron, Steel and Cast Iron are Non ferrous alloys
A.
True
B.
False
12. 
Pure Iron is...
A.
harder & stronger than steel
B.
harder & stronger than cast iron
C.
the hardest & strongest iron alloy
D.
the less hard & strong iron alloy
13. 
Steel is...
A.
harder & stronger than pure iron
B.
harder & stronger than cast iron
C.
the hardest & strongest iron alloy
D.
the less hard & strong iron alloy
14. 
Cast iron is...
A.
harder & stronger than pure iron
B.
harder & stronger than cast iron
C.
the hardest & strongest iron alloy
D.
the less hard & strong iron alloy
15. 
What is the hardest and the most resistant iron alloy?
A.
Pure Iron
B.
Steel
C.
Cast Iron
D.
Pure Iron
E.
Steel
F.
Cast Iron
16. 
Which is the most commonly used iron alloy?
A.
Pure Iron
B.
Steel
C.
Cast Iron
17. 
Which iron alloy would you use to make machinery parts, pistons, street lamps, drain covers, fences, rails…and so on?
A.
Pure Iron
B.
Steel
C.
Cast Iron
18. 
Which iron alloy corrodes easily?
19. 
Which iron alloy has a little utility because it's brittle and difficult to machine?
A.
Pure Iron
B.
Steel
C.
Cast Iron
20. 
What of the following properties are significant and representative of pure iron?
A.
It's brittle
B.
It's a Greyish White metal
C.
It has good magnetic properties
D.
It only melts at very low temperature
21. 
Why are some chemical elements added to steel alloys?
A.
To improve certain characteristics
B.
To achieve better utilities
C.
To reduce the amount of carbon