Oxygen is prepared commercially from
Sodium and water
Electrolysis of water
KCIO3
HNO3
When H2S is passed through HNO3 solution, the product formed is
Milk of S
Colloidal S
Υ-S
β-S
In Kipp's apparatus, H2S is prepared
Continuously
By FeS + Conc. H2SO4
By FeS + dil. H2SO4
By Fe + dil. H2SO4
Which metal sticks to a glass plate after treatment with ozone
Silver
Mercury
Copper
Lead
The geometry of H2S and its dipole moment are
Angular and non-zero
Angular and zero
Linear and zero
Linear and non-zero
Bond angle in O3 molecule is
108o29'
108o28'
116o90'
120o
Oxalic acid when heated with conc. H2SO4 gives
CO, CO2 and H2O
CO2 and H2S
Oxalic sulphate
Which of the following isotopes is present in largest amount?
O16
O17
O18
All in equal amounts
Number of hydroxyl groups present in pyrosulphuric acid is
3
4
6
2
Which compound has bond angle nearly 90°?
NH2
SO2
H2O
H2S
