तत्वों के आवर्त सारणी का ज� – McqOptions

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1.	तत्वों के आवर्त सारणी का जनक कौन था -
A.	जोहानेस वाण्डरवाल्स
B.	जोहान बेयर
C.	अल्फ्रेड नोबेल
D.	दिमित्री मेंडेलीफ
Answer» E.

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