Viscose rayon
Cannot be made from sulphite pulp
Utilises H2SO4, NaOH and CS2 during its manufacture
Cannot yield textile grade fibre
None of these
Correct Answer :
B. Utilises H2SO4, NaOH and CS2 during its manufacture
Related Questions
Thermal pyrolysis of ethylene dichloride produces
Trichloroethylene
Vinyl chloride
Ethanol amine
Ethylene oxide
Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate
Is prone to thermal decomposition
Has high water solubility and is unstable
Is soluble in ammonium chloride and potassium chloride solution
All (A), (B) and (C)
Salt is the basic raw material for the manufacture of
Cement
Glass
Potteries
Caustic soda
Fusion of bauxite and __________ produces high alumina cement.
Alum
Limestone
Coke
Quartz
Aryl benzene sulphonate (ABS) is a
Detergent
Plasticiser for unsaturated polyester
Starting material for the synthesis of glycerine
Coating ingredient for photographic film
Inversion of sucrose produces
Fructose
Glucose
Both (A) & (B)
Neither (A) nor (B)
The most economical pulp for the production of newsprint would be the __________ pulp.
Ground-wood
Sulphate
Sulphite
Semi-chemical
The end bleaching agent used to move last traces of colour bodies from the pulp is
Chlorine dioxide (ClO2)
MgO
SO2 gas
Mercaptans
Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about __________ °C.
-53
-103
-183
-196
Nylon-6 as compared to Nylon-66 is having higher
Hardness
Abrasion/resistance
Melting point
None of these
Pick out the wrong statement.
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
The process involved in converting rubber into a thin sheet or coating it on fabric is called
Extrusion
Mastication
Calendaring
Vulcanisation
Sulphuric acid is mainly used in the __________ industry.
Fertiliser
Steel
Paper
Paint
High acid value of an oil or fat is an indication of
Storage under improper conditions
Absence of unsaturation
Its smaller molecular weight
None of these
Presence of carbonaceous matter in the sewage
Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures
Reduces sulphate ions to sulphides causing obnoxious smell
Increases the quantity of chlorine used for its purification
All (A), (B) and (C)
Pick out the wrong statement.
Kraft method of pulp manufacture can process all types of fibrous raw materials
Digestion time for bagasse is less than that for wood base materials
Both temperature and pressure in the digestor is less in case of the sulphite method as compared to that in the sulphate method
None of these
Lime and soda ash are added to water to remove
Bicarbonates & sulphates of calcium and magnesium
Undesirable taste and odour
Bacteria
Its corrosiveness
Producer gas consists mainly of
CO, CO2 N2, H2
CO, H2
H2, CH4
C2H2, CO2, H2
Phenol formaldehyde resin is used as an adhesive in making
Laminates
Card boxes
Furniture
Books
Nitrile rubber is produced by the polymerisation of
Acrylonitrile and butadiene
Acrylonitrile and styrene
Isobutylene and isoprene
None of these
Cement setting under water employs a/an __________ process.
Hydration
Decomposition
Oxidation
Reduction
Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.
Coke and sand
Brine and coal
Coke and caustic soda
None of these
The major constituents of glass are
Lime, clay and soda ash
Sand, lime and soda ash
Silica, alumina and clay
Silica, alumina and soda ash
Phenol is mainly used
To produce benzene
To produce phenol formaldehyde
To produce polyester resin
As a plasticiser for unsaturated polyester
At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system).
P
√P
P2
1/P
Pick out the wrong statement.
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
Pick out the wrong statement.
Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate
Glass is decolorized during its manufacture by adding antimony oxide, manganese dioxide or arsenic oxide
Ordinary glass is represented chemically by Na2O . CaO . 6SiO2
Red color is imparted to glass by addition of arsenic oxide
Bakelite is chemically known as
Polyvinyl chloride (PVC)
Polybutadiene
Phenol formaldehyde
Polyurethane
Sucrose is a disaccharide consisting of
Glucose and glucose
Glucose and fructose
Glucose and galactose
Fructose and galactose
Concentration of hydrogen peroxide is done by
Crystallisation
Vacuum crystallisation
Atmospheric distillation
Dehydration