मानव द्वारा सर्वप्रथम किस – McqOptions

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1.	मानव द्वारा सर्वप्रथम किस धातु का उपयोग किया गया?
A.	चाँदी
B.	ताँबा
C.	पीतल
D.	काँसा
Answer» C. पीतल

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