railway RRB Technician Grade 3 Mock Test 2024 General Science Chemistry Organic Chemistry

कार्बन (C – 12) च्या एका मोलमध्ये किती अणू असतील?

1
6.02 × 1026
2
60.20 × 1026
3
8.06 × 1020
4
6.02 × 1023
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