Q. मानव ने सर्वप्रथम किस धातु का प्रयोग किया ?

(A) चांदी
(B) तांबा
(C) लोहा
(D) सोना

✅ Correct Answer: (B) तांबा

Published by Rakesh Kumar ⭐ 28.44K Points at 26-May-2024 08:43 am in Chemistry

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