fractional distillation
fractional crystallisation
sublimation
evaporation
A. fractional distillation
Moissan
Davy
Faraday
Marie Curie
wood charcoal
animal charcoal
coconut charcoal
lamp black
calcium soaps
lead soaps
soft soaps
hard soaps
tuberculosis
cancer
typhoid
malaria
valency
atomic mass
number of neutrons
atomic number
bakelite
polythene
PVC
Teflon
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
C6H12O6
C2H5OH
C12H22O11
C7H8O
Potassium nitrate
Silver nitrate
Ammonium carbonate
Ammonium bicarbonate
ten
twenty
zero
fifty
carbon disulphide
carbon tetrachloride
phosgene
chloroform
proteins
carbohydrates
tannins
lipids
acetic acid
oxalic acid
chromic acid
citric acid
oxidise ammonia to nitrates
convert nitrogen into ammonia
oxidise ammonia to free nitrogen
oxidise ammonia to oxides of nitrogen
gypsum
urea
potassium nitrate
ammonium phosphate
potassium
sodium
red phosphorus
white phosphorus
Aluminium
Chromium
Nickel
Tungsten
gold
zinc
tin
molybdenum
Oxygen
Air
Hydrogen
Chlorine
nervous disorders
heart diseases
anaemia
impairment of vision
Alexander Fleming
Sir JJ Thomson
Dr Nessler
Sir John Russel
a carbohydrate
a protein
a lipid
a hormone
P1V1T1 = P2 V2 T2
P1V1T2 = P2V2T1
P = P1 + P2 + P3
C =
calcium sulphate
ammonium chloride
caustic soda
silver nitrate
aquatic macrophytes
aquatic fungi
effluents
evapotranspiration
copper and tin
aluminium and magnesium
copper and zinc
copper, tin and zinc
Hydrolysis
Hydrogenation
Dehydration
Dehydrogenation
Carbon dioxide
Ammonia
Chlorine
Hydrogen sulphide
nitric acid
ammonia
nitrous acid
nitrogen peroxide
Nitrogen
Phosphorus
Potassium
Mercury