engineering recuitment ICAR Technician 2021 Mock Test (Re-Exam) General Science Chemistry

এক মোল জলে কয়টি অণু থাকে?

1
6.02 × 1026 অণু
2
7.02 × 1023 অণু
3
8.02 × 1022 অণু
4
6.02 × 1023 অণু
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