aquatic macrophytes
aquatic fungi
effluents
evapotranspiration
A. aquatic macrophytes
it contains carbonates of calcium and magnesium
it contains sodium chloride
it is highly coloured
it contains suspended impurities
Sir Ronald Ross
Sir Francis Haig
Dr Jagadish Chandra Bose
Sir CV Raman
phenol
TNT
picric acid
iodoform
glacial acetic acid
methanol
formic acid
stearic acid
vitamin C
vitamin B2
vitamin A
vitamin E
evaporation
using a magnet
sublimation
sedimentation
shaving creams
adhesive tapes
toilet powders
lubricants
phosphorus pentaoxide
phosphorus trichloride
phosphorus trisulphide
phosphorus trioxide
sucrose
glucose
fructose
a mixture of glucose and fructose
Hard water
Heavy water
Soft water
Both (a) and (b)
oleic acid
acetic acid
palmitic acid
stearic acid
from coal mines
when wood is burnt in excess of air
by heating coal out of contact with air
by heating wood out to contact with air
Gasoline
Benzoline
Kerosene
Petroleum ether
cement an limestone
cement and sand
cement and gravel
cement, sand and gravel
acetic acid
oxalic acid
chromic acid
citric acid
Burning of magnesium ribbon in air
Distillation of water
Heating of cane sugar
Setting of cement
carbon dioxide
chloroform
carbon tetrachloride
bleaching powder
Polyethylene
Nylon
Terylene
Rayon
tuberculosis
cancer
typhoid
malaria
sulphur
phosphorus
iodine
bromine
phenol
washing soda
absolute alcohol
vinegar
a carbohydrate
a protein
a lipid
a hormone
chrome steel
silicon steel
stainless steel
invar
lead chloride
mercurous chloride
mercuric chloride
calcium sulphate
tincture iodine
paints
ink
aerated water
zinc
tin
copper
aluminium
ZnSO4 . 7H2O
FeSO4 . 7H2O
MgSO4 . 7H2O
CaSO4 . 2H2O
Sodium
red phosphorus
white phosphorus
sulphur
quicklime
gypsum
soda lime
bleaching powder
Aluminium
Silver
Copper
Magnesium