Silicon carbide is used in which of the following activities?

Options :
  1. Making cement and glass
  2. Disinfecting water of ponds
  3. Making casts for statues
  4. Cutting very hard substances

Answer and Explanation :-

Answer: Option 4


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Once the writer in every individual comes to life (and that time is not far off), we are in for an age of universal deafness and lack of understanding.
-Milan Kundera The Book of Laughter and Forgetting