railway RRB Technician Grade 3 Mock Test 2024 Chemistry Some Basic Concepts of Chemistry Mole Concept

NTP তে 10 গ্রাম X গ্যাসের আয়তন 5.6 লিটার। X এর আণবিক ওজন কত?

1
20
2
40
3
50
4
60
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