Oxygen is produced by fractionation of air using __________ process.
Linde's
Claude's
Either (A) or (B)
None of these
Correct Answer :
C. Either (A) or (B)
Related Questions
Bordeaux mixture is a/an
Fertiliser
Inorganic fungicide
Insecticide
Explosive
__________ is a thermosetting plastic.
Polythene
Epoxy polymer
P.V.C.
Polystyrene
Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and
Sulphuric acid
Phosphoric acid
Hydrochloric acid
Hydrofluoric acid
Which of the following has sodium bicarbonate as its main constituent?
Baking soda
Baking powder
Washing soda
None of these
Polymethyl methacrylate (PMMA) is known as
Bakelite
Teflon
Perspex
Nylon-6
Ordinary glass is not a/an
Amorphous isotropic material
Supercooled liquid
Material with sharp definite melting point
Electrical insulator
Esterification reaction
Produces soap
Is reversible
Is a reaction between an alcohol and an organic acid
All (A), (B) and (C)
Air used in aerobic fermentation must be sterilized, otherwise the
Recovery of product will be difficult
Contamination of pure culture would result
Uniformity of product cannot be achieved
None of these
Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda?
Diaphragm electrolytic cell process
Mercury electrolytic cell process
Lime-soda process
None of these
Which of the following is not produced commercially from sea water?
Magnesium & potassium compounds
Common salt
Bromine
Iodine
Pick out the correct statement.
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
Main constituents of natural rubber is
Polystyrene
Polyisoprene
Polybutadiene
Polychlorophrene
An alkali metal salt of Palmitic acid is known as
Soap
Metallic soap
Detergent
Alkaloid
Extraction of __________ employs an electrolytic process.
Aluminium
Silver
Copper
All (A), (B) and (C)
Oxidation of SO2 to SO3 is favoured by
Low temperature and low pressure
Low temperature and high pressure
High temperature and low pressure
High temperature and high pressure
__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.
Phosphates
Chromates
Sulphates
Bi-carbonates
Sulphuric acid completely saturated with sulphur trioxide is called
Concentrated sulphuric acid
Oleum
Sulphurous acid
Dilute sulphuric acid
High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to
Flocculate the impurities
Facilitate fast filtration
Both (A) and (B)
Neither (A) nor (B)
The major use of butadiene is
As a plasticiser for unsaturated polyester
In the manufacture of synthetic rubber
As an anti-skinning agent in paint
None of these
The combustion reaction, C + O2 = CO2, is
Exothermic
Endothermic
Autocatalytic
None of these
Blue vitriol is chemically
Copper sulphate
Ferrous sulphate
Copper nitrate
Aluminium sulphate
Cellulose percentage in bamboo fibre is about
10
20
50
85
Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because
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)
Commercial production of calcium carbide requires limestone and __________ as raw materials.
Coke
Sand
Soda ash
Fuel oil
Sand and __________ is fused at 1300°C, to produce sodium silicate.
Limestone
Soda ash
Coke
Sodium sulphate
The gasification reaction represented by, C + H2O = CO + H2, is a/an __________ reaction.
Exothermic
Endothermic
Catalytic
Autocatalytic
In the Solvay process, the product from the calciner is
Light soda ash
Dense soda ash
Sodium bicarbonate
Dehydrated soda ash
Lime and soda ash are added to water to remove
Bicarbonates & sulphates of calcium and magnesium
Undesirable taste and odour
Bacteria
Its corrosiveness
Carbon disulphide is mainly used in the production of
Viscose rayon
Corundum
Plasticiser for unsaturated polyester
Paints
Use of chlorine in the treatment of sewage
Helps in grease separation
Increases the biological oxygen demand (BOD)
Causes bulking of activated sludge
Aids in flocculation