Civil Engineering - Building Materials - Discussion

Discussion Forum : Building Materials - Section 2 (Q.No. 42)
42.
Minimum of 40% of iron, is available in
Magnetite
Red haemetite
Limonite
Siderite
Black band.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
11 comments Page 2 of 2.

Hossayn Fedayi said:   4 years ago
Thin siderite is called the black band which contains 40% iron.


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