graphite
phosphorus
sulphur
iodine
A. graphite
50% water
10% water
70% water
20% water
lead
zinc
mercury
chromium
Palladium
NaCI
KOH
Dilute H2SO4
streptomycin
terramycin
aureomycin
codein
chlorine
nitrogen
sulphur
hydrogen
Kerosene oil
Diesel oil
Lubricating oil
Petroleum ether
acetamide phenol
malonyl urea
aminosalicylic acid
acetyl salicylic acid
annealing
tempering
calcining
galvanising
fractional distillation
fractional crystallisation
sublimation
evaporation
iodine in potassium iodide
iodine in alcohol
iodine in water
iodine in carbon disulphide
Rodenticide
Herbicide
Pesticide
Fungicide
cotton
wool
cellulose
silk
chlorination
boiling
adding caustic soda
ozonisation
evaporation
using a magnet
sublimation
sedimentation
adding milk of lime
filtering through sand
adding filter alum
chlorination
is unaffected by temperature variations
decreases with increase of temperature
increases with decrease of temperature
increases with increase of temperature
Chadwick
Madam Curie
Becquerel
Aston
chlorine
mercury
water
iodine
carbon monoxide
carbon dioxide
methane
phosgene
Moissan
Davy
Faraday
Marie Curie
ten
twenty
zero
fifty
Liebig
Pasteur
Bunsen
Erlenmeyer
evaporation
sublimation
using a separating funnel
fractional distillation
sulphanilamide
quinine
methicillin
novocaine
oleic acid
acetic acid
palmitic acid
stearic acid
the manufacture of explosives
the manufacture of dyes
refrigerators
the preparation of drugs
contracts while setting
expands while setting
is highly volatile
does not suffer any changes in volume while setting
an explosive
a fertilizer
a dye
a bleaching agent
nickel
zinc
chromium
copper
nitrogen
helium
neon
argon