Number of hydroxyl groups present in pyrosulphuric acid is
3
4
6
2
Which of the following isotopes is present in largest amount?
O16
O17
O18
All in equal amounts
In which reaction there is no change in the oxidation states?
SO2 + H2S → 2H2O + 3S
2Na + O → Na2O
Na2O2 + H2SO4 → Na2SO4 + H2O
4KCIO3 →3KCIO4 + KCI
Ozone reacts with
C2H4
C2H2
C6H6
All
Which compound has bond angle nearly 90°?
NH2
SO2
H2O
H2S
Oxygen is more electronegative than sulphur yet H2S is acidic while H2O is neutral. This is because.
Water is highly associated compound
H-S bond is weaker than H2O is neutral.
H2S is a gas while H2O is a liquid
The molecular weight of H2S is more than that of H2O
Oxygen is prepared commercially from
Sodium and water
Electrolysis of water
KCIO3
HNO3
Platinised asbestos used as a catalyst in the manufacture of H2SO4 is an example of
Heterogenous catalysis
Autocatalysis
Homogeneous catalysis
Induced catalysis
Which one has the highest bond energy?
O-O
S-S
Se-Se
Te-Te
When H2S is passed through HNO3 solution, the product formed is
Milk of S
Colloidal S
Υ-S
β-S
