sulphanilamide
quinine
methicillin
novocaine
B. quinine
bleaching powder
iodoform
sulphur dioxide
chlorine
dephlogisticated air
azote
inflammable air
marine acid air
Bronze
Brass
Solder
Gun metal
lead
chromium
zinc
tin
silicate
protein
fat
carbohydrate
sucrose
glucose
fructose
a mixture of glucose and fructose
nitric oxide
nitrogen peroxide
nitrogen pentoxide
nitrous oxide
Rusting of iron
Burning of magnesium
Sublimation of iodine
Electrolysis of water
atomic number
valency
atomic mass
atomic radius
Ammonium nitrate
Nitre
Charcoal powder
Sulphur
carbon dioxide
chloroform
carbon tetrachloride
bleaching powder
in the treatment of malaria
to relieve sleepiness
to induce sleep
to lower body temperature
Oxygen
Air
Hydrogen
Chlorine
streptomycin
terramycin
aureomycin
codein
ethyl alcohol
methyl alcohol
carbon monoxide
carbon dioxide
is unaffected by temperature variations
decreases with increase of temperature
increases with decrease of temperature
increases with increase of temperature
bakelite
polythene
PVC
Teflon
Law of Multiple Proportions
Law of Definite Proportions
Law of Conservation of Mass
Law of Reciprocal Proportions
an oxidation process
a reduction process
a physical change
an electro-chemical process
homogeneous, sulphates
heterogeneous, nitrates
heterogeneous, carbonates
homogeneous, silicates
Nitrogen
Phosphorus
Potassium
Mercury
sublimation
oxidation
reduction
decomposition
Gasoline
Benzoline
Kerosene
Petroleum ether
the percentage of carbon dioxide in air is kept almost constant
air always contains a constant proportion of oxygen
sufficient amounts of carbohydrates are produced
the process of photosynthesis proceeds smoothly
ferric sulphate
ferric oxalate
ferric nitrate
ferric chloride
adrenalin
glucagon
epinephrin
thyroxin
a very sweet smell
a very pungent smell
an irritating smell
no smell at all
adrenalin
thyroxin
insulin
epinephrine
Chadwick
Madam Curie
Becquerel
Aston
the initial showers wash the atmosphere free from most of the impurities
it contains desirable salts like sodium chloride and ammonium nitrate
it dissolves the gases in the atmosphere like ozone which are good for health in small quantities
it is supposed to be 'heaven sent'