1
10
25
40
B. 10
Slow sand filters can remove colour completely
Activated carbon can be used for taste & odour control without subsequent filtration
Application of activated carbon reduces the temporary hardness of water
Normally, the turbidity is removed by adding a coagulant prior to sedimentation
CaCO3
ZnO
Al2O3
Fe
Shift conversion
Oil hydrogenation
Steaming reforming of naphtha
Ammonia cracking/dissociation
Nitric acid
Hydrochloric acid
Methyl alcohol
Formic acid
Moving
Fixed
Fluidised
Entrained
Sodium sulphite and sodium bisulphite
Magnesium sulphite and free SO2 in acid medium
Magnesium sulphate and magnesium bicarbonate
None of these
Polythene
Epoxy polymer
P.V.C.
Polystyrene
Electromagnetic separation
Froth floatation
Roasting
None of these
Bicarbonates & sulphates of calcium and magnesium
Undesirable taste and odour
Bacteria
Its corrosiveness
Washing soda
Soda ash
Slaked lime
Quicklime
0.14
0.34
0.94
1.4
Neoprene
Cumene
Gelatin
Mercaptans
High pressure & low temperature
Low pressure & high temperature
High pressure & high temperature
Low pressure & low temperature
Not a fumigant
BHC (Benzene Hexachloride) containing 99% γ-isomer
A by-product of BHC manufacture
Both (B) and (C)
Cutting
Fibrillation
Hydration
Strengthening
Crystallisation
Vacuum crystallisation
Atmospheric distillation
Dehydration
2000
700
1100
< 500
Fertiliser
Steel
Paper
Paint
Nitric acid
Sulphuric acid
Ammonium sulphate
Hydrochloric acid
Iron-steam reaction
Electrolysis of water
Steam reforming of naphtha
Its cryogenic separation from coke oven gas
Nickel
Platinum
Iron
Alumina
Binding material for coal briquettes
Fuel in rotary kiln
Binder in making carbon electrodes
All (A), (B) and (C)
Presence of air
Absence of air
High concentration
Presence of ammonium salts
30
50
70
90
Produces high density polyethylene
Produces low density polyethylene
Uses no catalyst
Employs very high pressure
A fat is converted into oil by its hydrogenation
There is no difference between a fat and an oil so far as its physical properties are concerned
All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms
Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content
Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80%
Contact process of sulphuric acid manufacture produces pure acid of concentration ≥ 98%
75% oleum can be produced by distillation of 20% oleum
Contact process of sulphuric acid manufacture uses nickel as the catalyst
Less susceptible to chemical attack by molten fluxes and gases etc
Very strong
Having very high thermal conductivity
None of these
Dehydrogenation
Oxidation
Alkylation
Dehydration
Adhesive
Abrasive
Type of glass
Brittle material