Cooking liquor in case of sulphite process is
Sodium sulphite and sodium bisulphite
Magnesium sulphite and free SO2 in acid medium
Magnesium sulphate and magnesium bicarbonate
None of these
Correct Answer :
A. Sodium sulphite and sodium bisulphite
Related Questions
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
Very fine suspended and colloidal impurities are removed from water by a process called
Sedimentation
Coagulation
Disinfection
Softening
Main constituent of dolomite is
CaCO3
MgCO3
K2CO3
Na2CO3
The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to
Avoid mechanical weakening of fibre
Remove lignin by way of crystallisation
Increase the cellulose content
None of these
Which of the following processes is absent in glass manufacturing process?
Sintering
Annealing
Shaping or forming
Melting
Use of hydrated lime in water treatment
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)
Starting raw material for the manufacture of Maleic anhydride is
n-butene
Benzene
Either (A) or (B)
Neither (A) nor (B)
In primitive days, __________ was being manufactured by Leblanc Process.
Alum
Washing soda
Soda ash
Calcium carbide
Hydrazine is largely used
As a starting material for 'hypo'
In photographic industry
As rocket fuel
In printing industry
Aryl benzene sulphonate (ABS) is a
Detergent
Plasticiser for unsaturated polyester
Starting material for the synthesis of glycerine
Coating ingredient for photographic film
Which of the following is used as a binding material in soap to improve soap texture?
Rosin
Borax
Benzyl acetate
Sodium carbonate
Thermoplastic materials
Do not soften on application of heat
Are heavily branched molecules
Are solvent insoluble
None of these
Pick out the wrong statement.
Pasteurisation of milk involves moderate heating followed by cooling
Bakeries and breweries make use of yeasts
Enzyme is a complex nitrogenous compound
Oils and fats are alkaloids
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
What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell?
Cl2 & Na
Cl2 & H2
O2 & H2
Cl2, H2 & NaOH solution
Enamels
Give good glossy finish
Are same as varnish
Are prepared from non-drying oil
Do not contain pigment
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
__________ is used as a catalyst in fat splitting.
ZnO
Ni
V2O5
FeO
Chemical name of 'alum' is
Barium sulphate
Aluminium sulphate
Aluminium chloride
Calcium sulphate
Grignard reagent is chemically known as
Ethyl magnesium chloride
Methyl magnesium chloride
Dichlorophenol
Monochloroacetic acid
Oils and fats are converted to soap in a process called
Hydrogenation
Esterification
Saponification
None of these
Nickel is not used as a catalyst in the __________ reaction.
Shift conversion
Oil hydrogenation
Steaming reforming of naphtha
Ammonia cracking/dissociation
Viscosity index improver (like polystyrene or polyisobutylene) is added to lubricant to
Reduce its viscosity
Increase its viscosity
Reduce the variation in its viscosity with temperature
Increase the variation in its viscosity with temperature
High temperature carbonisation of coal takes place at __________ °C.
2000
700
1100
< 500
CaO is called
Quick lime
Slaked lime
Limestone
Calcite
Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces
Nylon-6
Dacron
Polyester
PVC
Ordinary glass is not a/an
Amorphous isotropic material
Supercooled liquid
Material with sharp definite melting point
Electrical insulator
Hard water
Does not affect the lather formation by soap
Is not unfit for drinking purpose
Pollutes the water stream
All (A), (B) and (C)
Liquor poisoning generally occurs due to the presence of __________ in it.
Ethyl alcohol
Impurities
Methyl alcohol
Carbonic acid
Polyvinyl chloride (PVC) is
A thermosetting material
A condensation polymerisation product
Made by employing emulsion polymerisation
None of these