The enthalpy of combustion of diamond and enthalpy of combustion of graphite has the same value.If true enter 1 else 0.
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Solution

The correct option is A 0
Carbon occurs in two forms: graphite and diamond. The enthalpy of combustion of graphite is -393.5 kJ, and that of diamond is -395.4 kJ
$C (g r a p h i t e) + O_{2} (g) \to C O_{2} (g) H = - 393.5 k J$
$C (d i a m o n d) + O_{2} (g) \to C O_{2} (g) H = - 395.4 k J$
$C (g r a p h i t e) \to C (d i a m o n d) H = + 1.9 k J$

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