Which of the following on heating produces NO2?
The formation of PH+4 is difficult compared to NH+4 because
(1) lone pair of phosphorous is optically inert
(2) lone pair of phosphorous resides in almost pure p- orbital
(3) lone pair of phosphorous resides at sp3 orbital
(4) lone pair of phosphorous resides in almost pure s- orbital
Concentrated nitric acid reacts with iodine to give:
Among the following compounds, which on heating do not produce N2?
Which of the following oxyacid contains both P-H and P-P bond simultaneously?
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
Among the following, which one is a wrong statement?
(a) PH5 and BiCl5 do not exist
(b) ρp-dp bonds are present in SO2
(c) SeF4 and CH4 have same shape
(d) has bent geometry
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Concept Questions :-
When copper is heated with conc. HNO3 it produces
(a) Cu(NO3)2 and NO (b)Cu(NO3)2,NO and NO2
(c)Cu(NO3)2 and N2O (d) Cu(NO3)2 and NO2