When NaNO3 is heated with (NH4)2SO4 a colourless gas & a residue is obtained. The colour of residue is
Which blue-liquid is obtained on reaching equimolar amounts of two gases at –30oC?
The dipole moment H2O2 is move than that of H2O but H2O2 is not a good solvent because:
Phosgene can be obtained when:
The gas produced when ammonium bisulphide is added to an aqueous solution of aluminium sulfate is
NaNO2 gives coloured fumes on treatment with dilute acids. The colour of fumes is
The strongest reducing agent amongst the following is
Which of the following is correct order of bond strength?
Of the following acids of sulphur which one has more than one oxidation state of sulphur atom?
Of the following which compound is most unstable?
An aqueous solution of a gas shows following reactions:
(i) It turns red litmus blue
(ii) When added in excess to a copper sulphate solution a deep blue colour is obtained.
(iii) On addition to ferric chloride solution a brownish precipitate soluble in HNO3 is obtained.
Identify the gas.