electrochemistry
physical chemistry
biochemistry
tinctorial chemistry
the manufacture of explosives
the manufacture of dyes
refrigerators
the preparation of drugs
A
C
B12
B1
urea
methane
acetic acid
benzene
red phosphorus and oxygen
white phosphorus and oxygen
carbon monoxide and chlorine
carbon dioxide and chlorine
tine
magnesium
zinc
copper
it becomes coloured
it gets evaporated in air
it gets oxidised to phosgene
it gets decomposed to chloropicrin
Dolomite
Magnetite
Bauxite
Anglesite
Thiokol
Drikold
Perhydrol
Mannitol
in the treatment of malaria
to relieve sleepiness
to induce sleep
to lower body temperature
its molecular weight is low
it is denser than ice
it is a good solvent for many ionic substances
the molecules of water are joined by hydrogen bonds
n-heptane
n-octane
iso-heptane
iso-octane
Terylene
Rayon
Nylon
Silk
a deliquescent substance
an efflorescent substance
a hygroscopic substance
a dehydrating substance
hydrochloric acid
ammonia
cane sugar
common salt
malathion
parathion
zinc phosphide
diuron
a cupel
a long narrow chamber
an open furnace
a closed furnace
it is lighter than air
in the lower layers it becomes unstable
ultra-violet light is present only in the upper layers
it mixes freely with O2 in the upper layers
Aluminium
Chromium
Nickel
Tungsten
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
an anaesthetic
a psychedelic drug
an antipyretic
an antibiotic
Ammonium nitrate
Nitre
Charcoal powder
Sulphur
sucrose
glucose
fructose
mannose
It must be free from suspended impurities
It must be free from harmful bacteria
It must contain traces of sodium bicarbonate
It must have a fishy odour
ammonium dichromate
copper Sulphate
magnesium Sulphate
sodium thiosulphate
Distillation of water
Action of heat on potassium chlorate
Powdering of glass
Burning of an electric lamp
1 and 3
2 and 3
1, 2 and 4
1, 2, 3 and 4
Tungsten steel
Manganese steel
Chromium steel
Nickel steel
asphalt
naphtha
diesel oil
lubricating oil
iodine
sulphur
graphite
phosphorus