Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Chemistry Some Basic Concepts of Chemistry Mole Concept

Na के 1 ग्राम परमाणु में कितने ग्राम होते हैं?

1

13 g

2

23 g

3

1 g

4

\(\frac{1}{23} \mathrm{~g}\)

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