The number of bonds in P4O10 is
N2O
The laughing gas is
Nitric Oxide
Nitrogen Oxide
Nitrogen Trioxide
Nitrogen Pentoxide
Sulphuric acid reacts with PCl5 to give
Thionyl Chloride
Sulphur Monochloride
Sulphuryl Chloride
Sulphur Tetrachloride
H2O + SO2
Ozone can be tested by
Ag
Hg
Zn
Au