Pbs means
Copper pyrites
Cinnabar
Galena
Iron pyrites
When Zinc Sulphate reacts with hydrogen sulphide, a white precipitate formed is
Zinc oxide
Zinc hydroxide
Zinc hydride
Zinc sulphide
The formula of oleum is
H2SO4
H2SO3
H2S2O7
H2S2O8
The formula of sugar is
C6 H12O6
C12 H22O11
C5 H10O5
H2SO2O7
The gas formed when hydrogen sulphide is burnt in excess of oxygen
SO2
HCl
CO2
NO2
The chemical used for skin diseases
Copper sulphide
Nickel sulphide
Mercuric sulphide
The allotrope of sulphur which is insoluble in carbon disulphide
Rhombic sulphur
Monoclinic sulphur
Plastic sulphur
Powdered sulphur
The gas which has the smell of rotten eggs
H2S
The pink colour of potassium permanganate disappears by the addition of
King of chemicals is
HNO3
