Concentrated nitric acid reacts with iodine to give:
Among the following compounds, which on heating do not produce N2?
In which process does the nitrogen undergo oxidation?
(1) N2 2NH3
(2) N2O4 2NO2
(3) NO3- N2O5
(4) NO2- NO3-
White phosphorous reacts with calcium to form a certain compound which on hydrolysis produces
It is because inability of ns2 electrons of the valence shell to participate in bonding that
(a) Sn2+ is reducing while Pb4+ is oxidising agent
(b) Sn2+ is oxidising while Pb4+ is reducing agent
(c) Sn2+ and Pb2+ are both oxidising and reducing agent
(d) Sn4+ is reducing while Pb4+ is oxidising agent