Give the structure of pyrphyuric acid. How would you prepare it? What would you observe when colourless HI is added to pyrphuric acid ?
Which of the following electronic configuration represents noble gas ?
ns2np6
ns2np5
ns2np4
ns2np3
A.
ns2np6
Electronic configuration of Noble gas is ns2np6. It is because it has fully filled valence shell electronic configuration.
Which phosphorus reacts with KOH solution to produce phosphene gas?
White phosphorus
Red phosphorus
Both (a) and (b)
None of these
What are the products obtained when ammonia is reacted with excess chlorine ?
N2 and NCl3
N2 and HCl
N2 and NH4Cl
NCl3, and HCl
Reaction of HNO3 with I, S, P and C gives respectively
HIO3, H2SO4, H3PO4, and CO2
HIO3, H2SO3, H3PO4, and CO2
HIO2,H2SO4, H3PO4, and CO
I2O5, SO2, P2O, and CO2