nitrogen
nitric oxide
nitrogen peroxide
nitrous oxide
D. nitrous oxide
Thiokol
Drikold
Perhydrol
Mannitol
hydrochloric acid
ammonia
cane sugar
common salt
Aluminium
Copper
Zinc
Iron
wood charcoal
animal charcoal
coconut charcoal
lamp black
chloro auric acid
auric chloride
gold nitrate
aurous chloride
copper sulphate and water
copper sulphate, lime and water
thio-urea and lime
copper sulphate and thio-urea
mercaptans
propylene
carbon disulphide
phosgene
calcium carbonate
sodium carbonate
magnesium sulphate
ferric chloride
whooping cough
tetanus
diphtheria
All the three
they may appear better
they can resist the action of acids and alkalies
they lose their brittleness
they can withstand temperature shocks
Dolomite
Magnetite
Bauxite
Anglesite
rain water
river water
conductivity water
deep well water
ethyl alcohol
methyl alcohol
carbon monoxide
carbon dioxide
Protons
Neutrons
Electrons
Protons and electrons
to make air a moderate supporter of combustion
to maintain the density of air constant
to prevent the hydrogen in air from exploding
to reduce the poisonous nature of ozone in air
hydrogen
nitrogen
oxygen
noble gases
ZnSO4 . 7H2O
FeSO4 . 7H2O
MgSO4 . 7H2O
CaSO4 . 2H2O
Lead
Tin
Silver
Gold
Na2CO3 . 10H2O
NaHCO3
Na2CO3 . H2O
NH4CI
magnetic oxide of iron
ferric oxide
ferrous oxide
ferrous carbonate
potassium and lead silicates
zinc and barium borosilicates
potassium and calcium silicates
sodium and calcium silicates
Kerosene oil
Diesel oil
Lubricating oil
Petroleum ether
as an analgesic
in the purification of water
as a fertilizer
as a disinfectant
charcoal
bleaching powder
chlorine
carbolic acid
evaporation
using a magnet
sublimation
sedimentation
phenol
iodoform
bleaching powder
blue vitriol
copper and tin
aluminium and magnesium
copper and zinc
copper, tin and zinc
fractional distillation
fractional crystallisation
sublimation
evaporation
increases the atomic mass of the atom
decreases the atomic mass of the atom
increases the charge on the nucleus
decreases the charge on the nucleus
Arsenic
Barium
Benzene
Bitumen