which is the hardest substance available on earth?
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Answered by
2
diamond is hardest in entire world
Shashik:
daimond is the hardest subtance on earth
haa toh kya maine farsi mai likha
Answered by
3
wlzer Boron nitride is the hardest substance present on the earth... after that diamond is hardest
na g galat
its diamond
Diamond
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