Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Science Chemistry Periodic Table
Which of the following oxoacid of sulphur has − O − O − linkage?
1
H2S2O8, peroxodisulphuric acid
2
H2S2O7, pyrosulphuric acid
3
H2SO3, sulphurous acid
4
More than one of the above
5
None of the above