General Knowledge - General Science - Discussion

Discussion Forum : General Science - Elements and Metals (Q.No. 19)
19.
In which of the following activities silicon carbide is used?
Making cement and glass
Disinfecting water of ponds
cutting very hard substances
Making casts for statues
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
42 comments Page 5 of 5.

Ramesh said:   1 decade ago
Friends, diamond is the hardest natural made substance.

But the silicone carbide is man made that's all. But the world's hardest material is "Lonsdaleite".

Srijita tripathi said:   1 decade ago
Firstly decide that which is hardest substance. I think it is the teeth of an animal. I forgot the name found in the sea of Western Europe.


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