Ultrahard Fullerites (crystalline form of C60 fullerenes) are made under which of the following conditions ?
A
High Pressure and Low Temperature
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B
Low Pressure and High Temperature
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C
High Pressure and High Temperature
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D
Low Pressure and Low Temperature
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Solution
The correct option is C High Pressure and High Temperature Ultrahard Fullerites are made under high pressure 13 GPa and require high temperature for heating up to 1100 K (more than 820°C).