Which is not the property of diamond?

Options

A. It is insoluble in all solvents
B. it is oxidised with a mixture of `K_(2)Cr_(2)O_(7)` and `H_(2)SO_(4)` at `200^(@)C`
C. Being harfest, it is used as an abrasive for sharpening hard tools.
D. `Delta_(f)H^(o.)` value of diamound is `1.90 kJ mol^(-1)`

Answer

B

Explanation

Diamond is not oxidised by `K_(2)Cr_(2)O_(7)//H_(2)SO_(4)` at `200^(@)C`.