Before filtration, reduces the bacterial load on filters
After filtration, combats the corrosiveness of water due to the presence of O2 & CO2
Is to adjust the pH value
All (A), (B) and (C)
D. All (A), (B) and (C)
Moisture, ash, sulphur & volatile matter
Moisture & volatile matter
Moisture, sulphur, nitrogen & fixed carbon
None of these
Coagulation
Sedimentation
Softening
Disinfection
Increasing the surface tension
Decreasing wettability
Supplying hydrophilic group
None of these
Hydrocyanic acid
Nicotine
Sodium fluoride
Hexane
L.D. converter
Blast furnace
Rotary kiln
Recuperator
Salt, limestone and coke or gas
Ammonia, salt and limestone
Ammonia limestone and coke
None of these
Polystyrene
Polyisoprene
Polybutadiene
Polychlorophrene
Proteins with high molecular weight (around 10,000)
Derived from living organisms
Catalyst for temperature sensitive reactions
All (A), (B) and (C)
Cold lime process
Coagulation
Hot-lime soda process
Sequestration
Its calorific value is very less
Tar neutralises the residual acids present in pitch
It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop
All (A), (B) and (C)
1 atm & 100°C
5 atm & 275°C
100 atm & 500°C
50 atm & 1000°C
Polyvinyl chloride (PVC)
Polybutadiene
Phenol formaldehyde
Polyurethane
2
10
25
50
Styrene
Naphthalene
Phenol
Benzoic acid
Poorer tensile strength
Poorer resistance to oxidation
Greater amount of heat build-up under heavy loading
All (A), (B) and (C)
Exothermic heat
Hissing sound
Slaked lime
All (A), (B) & (C)
High electrical insulation properties
Sharp melting points
Low co-efficient of thermal expansion
Compressive strength much greater than their tensile strengths
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
Reducing
Oxidising
Disinfecting
None of these
Air
Water
Nitrogen
Helium
Strongly caking coal should not be used in the Lurgi gasifier
Acetylene gas cannot be used for illumination purpose
Water gas is called blue gas because of the color of the flame, when it is burnt
Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels
Slag cement
Glasses
Porcelain/Potteries
Teflon
Ground-wood
Board
Tissue
Wrapping
SO3 gas is sparingly soluble in water
Water forms an acid mist, which is difficult to absorb
The purity of acid is affected
Scale formation in the absorber is to be avoided
Flammable in nature
Used in color discharge tube
Filled in lamps having tungsten filament
All (A), (B) and (C)
N2 & H2
CO2 & H2
CO & H2
C & H2
Linde's
Claude's
Either (A) or (B)
None of these
Oxidation of naphthalene
Propylene alkylation of benzene
Polymerisation of a mixture of benzene & propylene
None of these
NaOH
H2SO4
Hydrazine
Alum solution
Air
Natural gas
Coke oven gas
None of these