हीरा और ग्रेफाइट किसके अपर – McqOptions

MCQOPTIONS

1.	हीरा और ग्रेफाइट किसके अपरूप है ?
A.	सिलिकॉन
B.	सेलिनियान
C.	कार्बन
D.	टिन
Answer» D. टिन

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