Evaporation and burning the concentrate followed by causticisation of products
Multi-effect evaporation only
Selective liquid extraction
Extractive distillation
A. Evaporation and burning the concentrate followed by causticisation of products
Bauxite
Silicon carbide
Boron carbide
Calcium carbide
Minimises its turbidity
Helps in controlling its taste and odour
Minimises its corrosiveness
None of these
Reducing
Oxidising
Disinfecting
None of these
Washing soda
Soda ash
Plaster of Paris
Calcite
Bicarbonates & sulphates of calcium and magnesium
Undesirable taste and odour
Bacteria
Its corrosiveness
Lead glass
High silica (borosilicate) glass
Photo-sensitive glass
Fibre glass
Nylon-6
Paper
Antibiotics
Sugar
Monosaccharide
Disaccharide
Polysaccharide
None of these
75
< 10
> 30
50
Phthalic anhydride
Vinyl chloride
Maleic anhydride
Dacron
Anti-pyretic drug
Food preservative
Flavour
Dye
Phenol
Naphthalene
Benzene
Pyridine
Increase the rate of absorption
Avoid corrosion
Reduce the cooling water circulation rate
None of these
Binding material for coal briquettes
Fuel in rotary kiln
Binder in making carbon electrodes
All (A), (B) and (C)
Ni
Cr
V2O5
Al2O3
Both temperature & pressure in the former is less than that
Both temperature & pressure in the former is more than that
Temperature is more in the former whereas pressure is more
Pressure is more in the former whereas temperature is less
30
50
70
90
Hypo
Bleaching powder
Plaster of Paris
Aqua regia
Nickel
Vanadium
Silica gel
Alumina
Alcohol
Essential oil
Fatty acids
Massecuite
Give good glossy finish
Are same as varnish
Are prepared from non-drying oil
Do not contain pigment
Is a good adhesive
Is an elastomer
Cannot be used for surface coatings
Is a polyester
10
40
70
85
Inhibits/destroys the growth of microorganisms
Is used as a pain reliever
Is an antimalarial
Is an anaesthetic
Greater resistance to corrosion by slags
Less resistance to corrosion by slags
High spalling tendency
None of these
Air
Water
Nitrogen
Helium
Polybutadiene
Styrene butadiene rubber (SBR)
Polyurethane
Polychlorophrene
Cutting and welding by oxy-acetylene flame
Hospitals for medicinal purposes
Gas masks and artificial breathing apparatus
All (A), (B), and (C)
Waterproof
Slag
White
Pozzolan
Ethyl alcohol
Impurities
Methyl alcohol
Carbonic acid