The promotor used in Haber process is
Pt
Mo
Fe
Br2
The oxidation state of S in peroxodisulphuric acid is
+2
+3
+7
+6
An oxidising agent in the manufacture of potassium permanganate is
Ozone
nitric acid
chromic acid
K2Cr2O7
Which does not dissolve in concentrated nitric acid?
Chromium
copper
silver
Zinc
Tear gas is
COCl2
CCl3 NO2
Ca(OCl)2
CaCl2
When excess Cl2 is added to NH3, product obtained is
N2
NCl3
NH4Cl
both b & c
The spontaneous combustion of phosphine is technically used to
Huckel's signals.
Hund's signals.
Holme's signals.
Boyle's signals.
Which is not the correct statement?
The S8 ring is not planar .
Oxygen is more electronegative than sulphur
SF4 exists, but OF4 does not exist
SO3 and both have trigonal planar geometry
If the supply of oxygen is limited, H2S reacts with O2 to form
H2O + SO3
H2O + S
H2SO4 + S
H2O + SO2
Thermal decomposition of sodium azide gives
O2
O3
CO2