Which hydride is most acidic?
H2O
H2S
H2Te
H2Se
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
When a lead storage battery is discharged
SO2 is evolved
Lead sulphate is consumed
Lead is formed
H2SO4
'In Kipp's apparatus. H2S is prepared
Continuously
By FeS + Conc. H2SO4
By FeS + dil. H2SO4
By Fe + dil. H2SO4
Which of the following isotopes is present in largest amount?
O16
O17
O18
All in equal amounts
Oxalic acid when heated with conc. H2SO4 gives
CO, CO2 and H2O
CO2 and H2S
Oxalic sulphate
H2SO4 has very corrosive action on skin because
It reacts with proteins
It acts as dehydrating agent and absorption of water is highly exothermic
It acts as oxidizing agent
It has bleaching action
Platinised asbestos used as a catalyst in the manufacture of H2SO4 is an example of
Heterogenous catalysis
Autocatalysis
Homogeneous catalysis
Induced catalysis
Which metal sticks to a glass plate after treatment with ozone
Silver
Mercury
Copper
Lead
Which compound has bond angle nearly 90°?
NH2
SO2
