state gov TSPSC Hostel Welfare Officer (హాస్టల్ వెల్ఫేర్ ఆఫీసర్) Mock Test 2023 General Science Chemistry Periodic Table

রূপান্তর ধাতু কোন ব্লকের মৌল?

1
s-ব্লক 
2
p-ব্লক 
3
d-ব্লক 
4
f-ব্লক 
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