Chemical Engineering - Mechanical Operations - Discussion

Discussion Forum : Mechanical Operations - Section 4 (Q.No. 32)
32.
Which of the following is the hardest material ?
Calcite
Quartz
Corundum
Gypsum
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
1 comments Page 1 of 1.

Kiran said:   6 years ago
Corundum is a crystalline form of aluminum oxide typically containing traces of iron, titanium, vanadium, and chromium. It is a rock-forming mineral. It is also a naturally transparent material but can have different colors depending on the presence of transition metal impurities in its crystalline structure.

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