defence exam Indian Coast Guard Assistant Commandant (GD/CPL) 2025 Test Series General Science Chemistry

ਤਾਂਬੇ ਦੇ ਇੱਕ ਮੋਲ ਵਿੱਚ ਕਿੰਨੇ ਪਰਮਾਣੂ ਮੌਜੂਦ ਹੁੰਦੇ ਹਨ?

1
6.022 × 1024
2
6.022 × 10 25
3
6.022 × 1022
4
6.022 × 10 23
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