In Kraft process of paper manufacture, white cooking liquor consists of caustic soda
Sodium sulphide & sodium carbonate
Sodium sulphite & sodium carbonate
Sodium sulphite & sodium sulphide
None of these
Correct Answer :
A. Sodium sulphide & sodium carbonate
Related Questions
Phthalic anhydride is made by the
Oxidation of naphthalene
Oxidation of benzene
Dehydrogenation of ethyl benzene
None of these
Which of the following is an ore of iron?
Galena
Chalcopyrite
Hematite
Bauxite
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)
Isopropyl benzene produced by alkylation of benzene with propylene is known as
Neoprene
Cumene
Gelatin
Mercaptans
Coke used for the production of calcium carbide should have
Low ash content
Low ignition temperature
High electrical resistivity
All (A), (B) and (C)
Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in
Pyrolysis of oil
Sintering of porous catalyst
Hydrogen embrittlement
All (A), (B) and (C)
Percentage of alcohol in beer may be around __________ percent.
2-8
18-23
27-32
1-4
Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
Surfactant
Builder
Optical brightening agent
Anti soil redeposition agent
Varnish does not contain
Thinner
Pigment
Both (A) & (B)
Neither (A) nor (B)
Paper pulp produced by Kraft/sulphate process is
Bleached easily
Dull white in color
Strong fibrous
Dark colored
Wax is a
Mixture of glycerides
Mixture of esters of polyhydric alcohols excepting glycerine
Liquid at room temperature
Mixture of glycerides of fatty acids
Which oil is preferred for paint manufacture?
Drying oil
Non-drying oil
Semi-drying oil
Saturated oil
Widely used method for the conditioning of boiler feed water is the
Cold lime process
Coagulation
Hot-lime soda process
Sequestration
The most widely used coagulant for removing suspended impurities from water is
Bleaching powder
Chlorine
Calcium sulphate
Alum
Synthetic glycerine is produced from
Toluene
Phenol
Propylene
Naphthalene
Washing soda is chemically represented by
Na2CO3
Na2CO3.H2O
Na2CO3.10H2O
NaHCO3
Percentage of uranium in Carnotite ore found in Jadugoda (Jharkhand) is about
0.1 to 0.5
1 to 5
5 to 10
15 to 25
Which of the following contains least amount of N2?
Coke oven gas
Blast furnace gas
Producer gas
Water gas (blue gas)
__________ is an ore concentrating metallurgical process involving a chemical change.
Electromagnetic separation
Froth floatation
Roasting
None of these
Bleaching action of bleaching powder is due to its __________ properties.
Reducing
Oxidising
Disinfecting
None of these
Which of the following is a constituent of vinegar?
Around 10% alcohol
Around 1% acetic acid
Both (A) and (B)
Neither (A) nor (B)
Ca(OH)2 is called
Quicklime
Slaked lime
Limestone
Gypsum
Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process?
NH3
NaCl
CaO
Coke
Penicillin is made employing __________ fermentation process.
Continuous
Aerobic batch
Anaerobic batch
None of these
Maleic anhydride is produced by catalytic oxidation of
Toluene
Ethyl alcohol
Naphthalene
Benzene
Thorium is mainly used
For the manufacture of gas mantles
As a fissile fuel in a nuclear reactor
In the manufacture of hydrogen bomb
In the treatment of cancer
Which one of the following is not an elastomer?
Polyisoprene
Neoprene
Nitrile-butadiene
None of these
Which of the following is not responsible for causing permanent hardness of water?
Ca(HCO3)2
CaCl2
MgCl2
None of these
Systemic insecticides
Are absorbed throughout the plant
Kill insects following external bodily contact
Are stomach poisons
Emit poisonous vapour
Pick out the wrong statement.
Cold rubber (SBR) is superior as compared to hot rubber (SBR)
Polymerisation temperature can modify the properties of SBR
Production of cold SBR employs lower pressure as compared to that of hot SBR
None of these