pyrex glass
flint glass
quartz glass
Crooke's glass
C. quartz glass
chloroform
acetic acid
phenol
carbon tetrachloride
iron with very low percentage of carbon
iron with high percentage of carbon
iron and chromium
iron and manganese
decomposition of petrol
fermentation of animal and plant waste
destructive distillation of coal
electrolysis of water
Limestone
FeO
SiO2
MgO
animal charcoal
coal
wood charcoal
sugar charcoal
it contains carbonates of calcium and magnesium
it contains sodium chloride
it is highly coloured
it contains suspended impurities
phenol
iodoform
bleaching powder
blue vitriol
methyl alcohol and acetic acid
methyl alcohol and ethyl alcohol
ethyl alcohol and pyridine
methyl alcohol and pyridine
in the treatment of malaria
to relieve sleepiness
to induce sleep
to lower body temperature
a disinfectant
an analgesic
a hypnotic
a dye
hydrogen peroxide
silver nitrate
tincture iodine
m-cresol
tine
magnesium
zinc
copper
coal gas
producer gas
water gas
gobar gas
iron with zinc
zinc with iron
copper with silver
silver with gold
nickel
zinc
chromium
copper
Rutherford
Moseley
Niels Bohr
J.J. Thomson
hydrochloric acid
citric acid
tartaric acid
acetic acid
bakelite
polythene
PVC
Teflon
low pressure and high temperature
low pressure and low temperature
high pressure and low temperature
high pressure and high temperature
Arsenic
Barium
Benzene
Bitumen
Nitric acid
Hydrochloric acid
Silver nitrate
Sulphuric acid
A
C
B12
B1
Burning of magnesium ribbon in air
Distillation of water
Heating of cane sugar
Setting of cement
an oxidation process
a reduction process
a physical change
an electro-chemical process
Terylene
Rayon
Nylon
Silk
stearic acid
sodium hydroxide
palmitic acid
glycerol
oleic acid
acetic acid
palmitic acid
stearic acid
oxalic acid
citric acid
acetic acid
hydrochloric acid
sodium bicarbonate
sodium carbonate
carbonic acid
sodium hydroxide
cotton
wool
cellulose
silk