Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Science Chemistry Structure of Atom
The aromaticity of the following heterocycles follows the order
1
Thiophene> pyrrole> furan> pyridine
2
Furan>pyrrole>thiophene>pyridine
3
Pyridine>thiophene>Pyrrole>furan
4
More than one of the above
5
None of the above