Which one of the following reactions is not an exothermic
A.Absorption of sulphur troixide by 98.5% sulphuric acid
B.Oxidation of sulphur trioxide
C.Oxidation of sulphur to sulphur dioxide
D.Thermal dissociation of iron pyrites
A.Absorption of sulphur troixide by 98.5% sulphuric acid
B.Oxidation of sulphur trioxide
C.Oxidation of sulphur to sulphur dioxide
D.Thermal dissociation of iron pyrites
A.distillation at atmospheric pressure
B.crystallization
C.dehydration
D.vacuum distillation
A.a misture of conc. H2SO4 and oil
B.sulphuric acid which gives fumes of sulphur dioxide
C.sulphuric acid saturated with sulphur trioxide
D.a mixture of sulphuric and nitric acid.
A.as protective atmosphere to prevent oxidation in metal working and food preservation
B.for welding
C.for cutting of metals
D.as refrigerant
A.Zn
B.B
C.Pb
D.Ce
A.reacting calcium carbide with liquid water
B.Sachsse process
C.Wulff process
D.all of these ansers
A.Monoclinic
B.plastic
C.rhombic
D.flowers of sulphur
A.iron
B.aluminium oxid
C.nickel
D.vanadium pentoxide
A.limestone and coke
B.limestone and slaked lime
C.limestone and sand
D.limestone and caustic soda
A.sulphuric acid is formed in solution
B.sulphurous acid is formed in solution
C.sulphur is precipitated
D.no change is observed