Teaching Rajasthan Basic Computer Instructor 2021 Mock Test Chemistry P - Block Group 14 Elements (Carbon Family)

खालीलपैकी सर्वात कठीण पदार्थ कोणता आहे?

1
बकमिनस्टर फुलरिन
2
हिरा
3
ग्रॅफाइट
4
लोह 
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