A. The hardest substance in nature is :-(1) diamond (ii) graphite (iii

1.	A. The hardest substance in nature is :-(1) diamond (ii) graphite (iii) stone (iv) coalYlibrin cholarhlon hontorin
Answer» EXPLANATION: The HARDEST SUBSTANCE in NATURE is DIAMOND

A. The hardest substance in nature is :-(1) diamond (ii) graphite (iii) stone (iv) coalYlibrin cholarhlon hontorin

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