Of the following which compound is most unstable?
The compound IF is most unstable. It disproportionates rapidly into IF5and I2.
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
When NaNO3 is heated with (NH4)2SO4 a colourless gas & a residue is obtained. The colour of residue 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?
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.
Ammonium dichromate on heating gives
White silver surface turns black when O3 is passed over it.
This is due to the formation of