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
C. ultra-violet light is present only in the upper layers
Law of Multiple Proportions
Law of Definite Proportions
Law of Conservation of Mass
Law of Reciprocal Proportions
nickel
aluminium
mercury
calcium
Lead
Tin
Silver
Gold
mercaptans
propylene
carbon disulphide
phosgene
methane
nitrogen
carbondioxide
ethylene
tincture iodine
paints
ink
aerated water
tine
magnesium
zinc
copper
ten
twenty
zero
fifty
Palladium
NaCI
KOH
Dilute H2SO4
adrenalin
glucagon
epinephrin
thyroxin
hydrogen
nitrogen
oxygen
noble gases
50% water
10% water
70% water
20% water
adrenalin
thyroxin
insulin
epinephrine
Sir Ronald Ross
Sir Francis Haig
Dr Jagadish Chandra Bose
Sir CV Raman
grams
pounds
carats
tons
a basic salt
an acid salt
a double salt
a normal salt
lead
zinc
mercury
chromium
It is spontaneous disintegration of atoms
It is induced by bombardment with projectiles
It is transmutation of atoms with projectiles
It is dependent on temperature
nitric acid
ammonia
nitrous acid
nitrogen peroxide
chlorine
carbon monoxide
sulphur dioxide
o-cresol
urea
methane
acetic acid
benzene
gold
zinc
tin
molybdenum
a very sweet smell
a very pungent smell
an irritating smell
no smell at all
brimstone and silica
limestone and clay
brimstone and clay
brimstone and limestone
high temperature
light
moisture
dry air
Silicon
Oxygen
Carbon
Calcium
ammonium dichromate
copper Sulphate
magnesium Sulphate
sodium thiosulphate
calcium carbonate
magnesium bicarbonate
calcium sulphate
magnesium sulphate
atomic number
valency
atomic mass
atomic radius
decomposition of petrol
fermentation of animal and plant waste
destructive distillation of coal
electrolysis of water