railway RRB Group D Mock Test Series 2024-25 General Science Chemistry Basic Concepts of Chemistry

64 গ্রাম অক্সিজেন গ্যাসে অক্সিজেন পরমাণুর সংখ্যা কত?

1
6.023 x 1023
2
16.023 x 1032
3
24.092 x 1023
4
6.023 x 1032
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