10
25
50
98
C. 50
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)
Merely compression of gas beyond its critical pressure
Joule-Thomson expansion cooling
Heat exchange with colder stream
Adiabatic expansion against a piston or in a turbine
Slaked lime
Soda lime
Calcium perchlorate
None of these
Styrene
Naphthalene
Phenol
Benzoic acid
Perspex
Nylon-66
Polystyrene
Bakelite
Yields acid of higher concentration than chamber process
Yields acids of lower concentration than chamber process
Is obsolete
Eliminates absorber
Roasting
Smelting
Froth floatation
Electromagnetic separation
Chlorine dioxide (ClO2)
MgO
SO2 gas
Mercaptans
Oxidation of naphthalene
Propylene alkylation of benzene
Polymerisation of a mixture of benzene & propylene
None of these
Na2CO3
NaHCO3
Na2CO3.H2O
Na2CO3.10H2O
75
< 10
> 30
50
Addition of soda ash to it
Treating it with zeolites
Passing it through sodium hexametaphosphate
All (A), (B), and (C)
C + H2O = CO + H2
CaC2 + H2O = Ca(OH)2 + C2H2
MgCO3 = MgO + CO2
All (A), (B) and (C)
A slow reaction
A discontinuous reaction (requiring regeneration of iron by water gas intermittently)
Still in development stage (by employing fluidised bed technique)
All (A), (B) and (C)
Ca(HCO3)2
CaCl2
MgCl2
None of these
Gypsum
Silicates
Sodium silicate
Carbonates
Electromagnetic separation mainly
Gravity separation
Froth floatation
Roasting
Chlorine
Ammonium chloride
Sodium carbonate
Sodium bi-carbonate
Polyamide
Thermosetting resin
Polyester
None of these
Detergent
Vanaspati
Soap
Mercaptans
A metal can be economically extracted from it
It contains ≥ 40% metal
The metal present in it is costly
All (A), (B) and (C)
Making protective gas (95% N2 + 5% H2) for annealing of cold rolled steel strip coils
Fire fighting purposes
Both (A) & (B)
Neither (A) nor (B)
Hydration
Decomposition
Oxidation
Reduction
Thinner
Pigment
Both (A) & (B)
Neither (A) nor (B)
Remove double bonds
Raise its melting point
Improve its resistance to oxidation
None of these
Alumina
Silica gel
Platinum
Nickel
Methyl alcohol
Ethyl alcohol
Benzol
Dimethyl ether
Fischer-Tropsch process
Shift conversion
Hydrogenation of oil
Ostwald's process of HNO3 manufacture
Reduction
Roasting
Calcination
Smelting
L.D. converter
Blast furnace
Rotary kiln
Recuperator