Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Chemistry Basic Concepts of Chemistry
Which of the following combines with Fe2+2 ions to form a brown ring?
1
N2O
2
NO
3
N2O3
4
More than one of the above
5
None of the above