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'
A. the initial showers wash the atmosphere free from most of the impurities
valency
atomic mass
number of neutrons
atomic number
rain water
river water
conductivity water
deep well water
nitrogen
nitrous oxide
nitric oxide
nitrogen peroxide
nitric oxide
nitrogen peroxide
nitrogen pentoxide
nitrous oxide
calcium soaps
lead soaps
soft soaps
hard soaps
rubbers
fibres
resins
sugars
neon
argon
helium
krypton
in the treatment of malaria
to relieve sleepiness
to induce sleep
to lower body temperature
Dalton
Cavendish
Avogadro
Berzelius
hydration
dehydration
dialysis
osmosis
Gasoline
Kerosene
Sulphuric acid
Alcohol
Rusting of iron
Burning of magnesium
Sublimation of iodine
Electrolysis of water
n-heptane
n-octane
iso-heptane
iso-octane
calcium carbonate
sodium carbonate
magnesium sulphate
ferric chloride
sucrose
maltose
glucose
fructose
Limestone
FeO
SiO2
MgO
cotton
wool
cellulose
silk
ZnSO4 . 7H2O
FeSO4 . 7H2O
MgSO4 . 7H2O
CaSO4 . 2H2O
chloroform
acetic acid
phenol
carbon tetrachloride
Lavoisier
Priestley
Dalton
Avogadro
Aluminium
Copper
Zinc
Iron
50% water
10% water
70% water
20% water
Sir Ronald Ross
Sir Francis Haig
Dr Jagadish Chandra Bose
Sir CV Raman
A mixture of potassium nitrate and carbon
A mixture of ammonium chloride and sodium nitrate
A mixture of potassium chlorate and manganese dioxide
A mixture of ammonium nitrate and charcoal
manganese dioxide
bauxite
animal charcoal
quicklime
Aluminium
Silver
Copper
Magnesium
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
land pollution
air pollution
noise pollution
water pollution
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
Lithium
Helium
Sodium
Cobalt