brass
common salt
cane sugar
water
A. brass
nickel
aluminium
mercury
calcium
oxalic acid
citric acid
acetic acid
hydrochloric acid
shaving creams
adhesive tapes
toilet powders
lubricants
Silicon
Oxygen
Carbon
Calcium
Astatine
Francium
Tritium
Zirconium
grams
pounds
carats
tons
silicate
protein
fat
carbohydrate
Law of Multiple Proportions
Law of Definite Proportions
Law of Conservation of Mass
Law of Reciprocal Proportions
Aluminium
Silver
Copper
Magnesium
wood charcoal
animal charcoal
coconut charcoal
lamp black
Burning of magnesium ribbon in air
Distillation of water
Heating of cane sugar
Setting of cement
gold
zinc
tin
molybdenum
Activated charcoal
Anthracite coal
Diamond
Graphite
as a nucleus to condense water vapour resulting in rain
to maintain the average density of air
to minimise the inflammatory nature of oxygen
to protect the inhabitants of the earth from the effects of ultra violet rays.
whooping cough
tetanus
diphtheria
All the three
wrought iron
steel
pig iron
nickel steel
an oxidation process
a reduction process
a physical change
an electro-chemical process
tin and copper
tin and lead
tin and zinc
tin, copper and zinc
it becomes coloured
it gets evaporated in air
it gets oxidised to phosgene
it gets decomposed to chloropicrin
tine
magnesium
zinc
copper
is unaffected by temperature variations
decreases with increase of temperature
increases with decrease of temperature
increases with increase of temperature
adding milk of lime
filtering through sand
adding filter alum
chlorination
electrochemistry
physical chemistry
biochemistry
tinctorial chemistry
ammonia
ammonium nitrate
ammonium chloride
ammonium nitrite
oxidise ammonia to nitrates
convert nitrogen into ammonia
oxidise ammonia to free nitrogen
oxidise ammonia to oxides of nitrogen
dextrose
fruit sugar
beet sugar
blood sugar
manganese
vanadium
nickel
chromium
cobalt
tin
manganese
platinum
carbon dioxide
chloroform
carbon tetrachloride
bleaching powder
nitric acid
ammonia
nitrous acid
nitrogen peroxide