Select the pair of gases which turn lime water milky
CO2 and NH3
SO2 and SO3
SO2 and CO2
CO2 and SO3
Sulphuric acid gives a precipitate with barium chloride solutions is in what colour?
white
black
pale green
yellow
The catalyst used for the preparation of sulphuric acid in contact process is
V2O5
P2O5
SO2
Spongy Fe
Replacing one hydrogen from sulphuric acid results in the salt formation of
normal salt
acidic salt
basic salt
complex salt
When dilute sulphuric acid reacts with iron sulphide, the gas evolved is
Hydrogen sulphide
Sulphur dioxide
Sulphur trioxide
Vapour of sulphuric acid
Gas produced by chemical action of H2SO4 on copper is
CO2
H2
CuO
Catalyst used for conversion of sulphur dioxide to sulphur trioxides is
Pt
Hg
A hygroscopic liquid is
CH3COOH
H2SO4
H2S
FeSO4
Sulphuric acid reacts with metal but it does not react with
Mg
Fe
Au
Zn
When blue copper (11) sulphate treated with H2SO4 gives
Deep blue coloured CuSO4
Red coloured phosphorous
Dirty white coloured CuSO4
Green coloured FeSO4