Q. हीरे का खनिजीय बनावट क्या है ?

(A) नाइट्रोजन
(B) कार्बन
(C) जस्ता
(D) ये सभी

✅ Correct Answer: (B) कार्बन

Published by Kanak Sharma ⭐ 6.13K Points at 23-Mar-2021 04:12 pm in Science

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