सबसे अधिक क्रियाशील धातु क – McqOptions

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1.	सबसे अधिक क्रियाशील धातु कौन सी है -
A.	सोडियम
B.	कैल्सियम
C.	आयरन
D.	पोटैशियम
Answer» B. कैल्सियम

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