Process Industries (Set 1) Flashcards
A survey of different chemical process industries, focusing on raw materials, processes, and products.
Oxidation of SO2to SO3is favoured by
low temperature and high pressure.
Gun powder, which is an explosive comprises of charcoal, sulphur and
salt petre
Starting raw material for the manufacture of alum is
bauxite
Salt cake is chemically represented by
Na2SO4
Which of the following sugars is the sweetest?
Fructose
Paper pulp produced by kraft/sulphate process is
strong fibrous
Claude process of gas liquefaction employs
adiabatic expansion against a piston or in a turbine.
The main use of HCl is in the
drilling of petroleum wells and pickling of steel sheets.
The gasification reaction represented by, C + H2O = CO + H2, is a/an ____ reaction.
endothermic
Viscose rayon is chemically
regenerated cellulose acetate
All enzymes are made of
proteins
The combustion reaction, C + O2= CO2, is
exothermic
Styrene is produced from ethyl benzene by the process of
dehydrogenation
Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of
callagen
The chamber process is
none of these.
Sucrose content in the raw juice extracted from sugar cane is about ____ percent.
15 - 20
Fusel oil is a/an
mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses).
Styrene-butadiene-rubber (SBR) as compared to natural rubber has
all (a), (b) and (c).
Co-efficient of thermal expansion of glass is decreased by the addition of ____ during its manufacture.
ZnO
The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
oleum
Haemoglobin is a/an
protein
Epoxy resin
is a good adhesive.
Concentration of NaOH solution produced by mercury electrolytic cell is about ____ percent.
50
Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda?
Pollution of water stream by mercury.
Esterification reaction produces
soap
Wood charcoal is used for decolouration of sugar, because it ____ the coloured materials.
adsorbs
Producer gas consists mainly of
CO, CO2N2, H2
Neoprene is the trade name of
polychloroprene
Hard water
is not unfit for drinking purpose.
Which of the following is an organo-metal-lic compound ?
Tetra-ethyl lead
Sulphur addition in soap is done to
cure pimples & dandruff.
Phosphate rock is a raw material for the manufacture of
all (a), (b) and (c)
Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its
all (a), (b) and (c).
Which of the following is not a raw material used for the manufacture of ordinary glass?
Iron oxide
Esterification reaction
all (a), (b) and (c).
In sulphate pulp manufacture, the pressure and temperature in the digestor is
10 atm., 170-180°C
Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of
sodium chloride
Pick out the endothermic reaction out of the following.
CaCO3= CaO + CO2
Pasteurisation of milk means
killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics.
Fusion of bauxite and ____ produces high alumina cement.
limestone
____ process is used for the manufacture of sodium carbonate by ammonia soda process.
Solvay
Polycaprolactum is commercially known as
nylon-6
Frasch process is for
mining sulphur
Very fine suspended and colloidal impurities are removed from water by a process called
coagulation
Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because
it reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop.
Which is the main reducing agent during production of iron from iron ore in a blast furnace ?
CO
The drug used in contraceptives is
mestranol
Raw materials used for producing ____ cement does not contain iron oxide.
white
In the Lurgi coal gasifier
large quantity of coal can be processed.
Neon gas is
used in color discharge tube.
Calgon used in water treatment is chemically
sodium hexametaphosphate
Which oil is preferred for paint manufacture ?
Drying oil
Styrene butadiene rubber (SBR) is
a synthetic polymer.
Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at
5 atm & 275°C
Glycerine is not used in the
none of these.
Cumene is the starting material for the production of
phenol and acetone
The type of high refractive index glass used in optical instruments is ____ glass.
flint
Oxidation of ortho-xylene in presence of ____ catalyst is done to produce phthalic anhydride on commercial scale.
vanadium
Most commonly used rubber vulcanising agent is
sulphur
Terylene is
both (a) & (b)
Free alkali in a toilet soap is ____ that in a laundary shop.
less than
Dehydrogenation of isopropanol produces
acetone
Pick out the wrong statement.
Tarnish inhibitor (e.g., benzotriazole) is added in soap to facilitate the removal of stains due to tea, blood etc.
Concentration of hydrogen peroxide is done by
vacuum crystallisation
Helium is produced on commercial scale from
natural gas
Fermentation of molasses to produce ethyl alcohol is done at ____ °C
20 - 30
The catalyst used in the manufacture of DDT is
20% oleum.
Most widely and commonly used coagulant for the removal of suspended impurities in water is
alum
____ is used as a catalyst in fat splitting.
ZnO
Which of the following is not produced on commercial scale from sea water?
Sodium sulphate.
Heating of ____ to 120°C, produces plaster of paris.
gypsum
Pick out the wrong statement.
Decomposition of sulphuric acid on heating does not start before its boiling.
Which of the following has sodium bicarbonate as its main constituent ?
Baking powder
Ordinary glass is not a/an
material with sharp definite melting point.
In premitive days, ____ was being manufactured by Leblanc Process.
soda ash
The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at
SASOL (in South Africa).
Lurgi coal gasifier is a pressurised ____ bed reactor.
moving
Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils
cause cholesterol build up and blood clotting.
Paper grade bamboo contains about ____ percent cellulose.
5
Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
anti soil redeposition agent
Vulcanisation of rubber
converts its plasticity into elasticity.
Raw materials for ‘Solvay Process’ for manufacture of the soda ash are
salt, limestone and coke or gas.
Chloral is used in the manufacture of
DDT
Bromine is used in the preparation of
all (a), (b) and (c).
Sudden temperature fluctuation does not affect pyrex glass, because of its
low co-efficient of expansion.
The process used for the manufacture of ethyl alcohol from molasses is
none of these
Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about ____ percent.
< 10
Absorption of SO
exothermic
____ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia.
Ostwald’s
Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the
car battery solution
The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is
alumina
A good quality coal should have
none of these
Zeolite used in water softening process (cation exchange) is regenerated by washing with
brine
The catalyst used in shift converter is
nickel
Which of the following is a detergent ?
Alkyl benzene sulphonate
Drinking (potable) water treatment does not involve
softening
Phenol formaldehyde resin is used as an adhesive in making
laminates
Pick out the correct statement.
All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms.
DDT should not be allowed to come in contact with iron (during its manufacture) to
avoid its decomposition.
Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively
oxides of nitrogen & V
DDT stands for
dichloro-diphenyl-trichloroethane.
Phosphoric acid is prepared from
rock phosphate
Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used
as a lubricant.
Which of the following processes does not produce Cl
Lime-soda process
Bleaching action of bleaching powder is due to its ____ properties.
oxidising
Solvent extracted oil
none of these.
Which of the following is not required in the manufacture of soda ash by Solvay process ?
Nitric acid
Saponification number of an oil or fat
all (a), (b) & (c).
The purpose of tanning in leather industry is to
stiffen the leather.
Lime and soda ash are added to water to remove
bicarbonates & sulphates of calcium and magnesium.
Kaoline is a/an
refractory material
Hydrogenation of edible vegetable oils
all (a), (b) and (c).
Phenol is mainly used
to produce phenol formaldehyde.
Main constituent of dolomite is
MgCO
Conversion of CO to CO
shift conversion.
Refractory bricks having high thermal conductivity is desirable, when it is to be used in the
recuperator
Bromides contained in hot mother liquor is treated with ____ during manufacture of bromine from sea water.
Cl
Plasticisers are added to paints to
give elasticity & prevent cracking of the film.
Resistance to fusion of the refractory under a steady rising temperature condition is called
refractoriness
Portland cement consists mainly of
CaO & SiO
____ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.
Pyrex
The amount of benzene present in pure benzol is about ____ percent.
70
Cumene (isopropyl benzene) is made by
propylene alkylation of benzene.
Which of the following is not a pyrite ore?
Siderite
Mannheim furnace is used in the manufacture of
hydrochloric acid.
Thermosetting materials
are cross-linked molecules.
Pick out the wrong statement. Iodine value of an oil or fat is
independent of the type of oil, whether it is drying or non-drying.
Nickel is not used as a catalyst in the
Ostwald’s process of HNO
____ iron is the purest form of iron.
Wrought
Enamels
give good glossy finish.
Black liquor is converted into white liquor by
evaporation and burning the concentrate followed by causticisation of products.
Varnish does not contain
pigment
Alcohol is produced by the
hydrolysis of an ether
Varnish does not contain
pigment
Polymerisation product of C
teflon
Solvent used for extraction of oil is
hexane
Insulin is an ____ drug.
none of these
Liquor poisoning generally occurs due to the presence of ____ in it.
methyl alcohol
Neoprene is chemically known as
polychloroprene
Pick out the wrong statement.
Contact process of sulphuric acid manufacture uses nickel as the catalyst.
Pick out the wrong statement.
Raw materials for DDT manufacture are benzene and chlorine.
Molecular weights of polymers are in the range of
10
Sulphur removal by heating of pyrite ore in presence of air is called its
roasting
Deacon’s method is used for the manufacture of
chlorine
Pick out the true statement pertaining to water treatment.
Normally, the turbidity is removed by adding a coagulent prior to sedimentation.
Laboratory glass wares which reacts with hydroflouric acid, are made of the ____ glass.
borosilicate
Prussian blue is chemically represented by
Fe
Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of
nitric acid
The most stable allotropic form of phosphorous is the ____ phosphorous.
black
Function of thinner in a paint is to
suspend pigments & dissolve film forming materials.
Starting material for the production of styrene butadiene rubber (SBR) is
both (a) & (b)
Which one of the following is not an elastomer ?
None of these
Which of the following processes can remove both temporary as well as permanent hardness of water ?
Distillation
Dacron is a
none of these.
Rancidity of the fatty oil can be reduced by its
hydrogenation
Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like
all (a), (b) and (c)
____ of rubber decreases after its vulcanisation.
Tackiness
Boiling of water containing temporary hardness produces
CO
Starting material for the commercial production of ethyl alcohol in India is
molasses
Phenol formaldehyde
employs condensation polymerisation.
Which of the following is not an insecticide?
Hexane
Shrinkage volume in cement setting does not depend upon the
sand to cement ratio.
Bisphenol A is produced by the condensation of acetone with
phenol
In Kraft process of paper manufacture, white cooking liquor consists of caustic soda
sodium sulphide & sodium carbonate.
Presence of carbonaceous matter in the sewage
all (a), (b) and (c).
A mineral is termed as ‘ore’, if
a metal can be economically extracted from it.
In the manufacture of H
all (a), (b) and (c).
At a given temperature, the equilibrium yield of SO
0
Oleum produces fumes of
SO
20% oleum means that in 100 kg oleum, there are 20 kg of
SO
Chloramines are used in water treatment for
disinfection and control of taste & odour.
Glycerine is recovered from lye by
evaporation followed by vacuum distillation.
Inversion of sucrose produces
glucose
Enzymes are organic catalysts used in the ____ reactions.
biochemical
Linde process of gas liquefaction employs
adiabatic expansion through a throttle valve (Joule-Thomson expansion).
Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is ____ percent.
50
Ore concentration by froth floatation utilises the ____ of ore particles.
wetting characteristics
The main use of activated carbon in water treatment is to control
taste and odour
The most commonly used substance to speed up the sedimentation of sewage is
lime
Sucrose is a
disacchride
Sugar content in sugarcane on cane basis is about ____ percent by weight.
5 to 10
Pick out the wrong statement.
Total sugar content in molasses is about 10%.
The major use of butadiene is
in the manufacture of synthetic rubber.
The manufacture of Kraft pulp is done by a/an ____ process.
alkaline
Antibiotic
inhibits/destroys the growth of microorganisms.
Which of the following paper does not require a filler during manufacture ?
Blotting paper
Industrial production of chloroform requires acetone and
calcium hypochlorite
Pencillin, an antibiotic drug was discovered by
Alexender
Styrene (a monomer for the production of polystyrene) is commercially produced by
catalytic dehydrogenation of ethyl benzene.
Hydrogenation of oil takes place in a/an ____ reactor.
trickle bed
Fatty material used in soap making is
tallow
____ glass is used for the manufacture of optical glass.
Flint
Thermosetting plastic materials
can not be melted after forming.
Favourable conditions for the liquefaction of gases in general are
high pressure & low temperature.
In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed :
furnace → converter → absorber
____ nature of hypo (sodium thiosulphate) makes it useful in photography.
Complex forming
____ is an ore of lead.
Galena
Which of the following is an yellow pigment ?
Lead chromates
Catalytic oxidation of toluene produces
phenol
SO
act as an acidifying agent.
The noble gas which occurs most abundantly in the atmosphere is
argon
Production of alcohol by fermentation of molasses is an ____ process.
aerobic
Main constituents of portland cement are calcium aluminate and
silicates
Pick out the wrong statement.
High early strength cement are made from materials having high silica to lime ratio.
Common salt is generally not produced commonly by ____ method from brine.
freeze drying
Which of the following is a detergent ?
Alkyl benzene sulphonate (ABS)
Sulphuric acid is mainly used in the ____ industry.
fertiliser
Pick out the wrong statement pertaining to nitric acid.
Arc process of nitric acid manufacture is economical as compared to Ostwald’s process.
Alcohol percentage in molasses may be around
40
Main use of hydrazine is
as a rocket fuel
Main use of liquid nitrogen is in
refrigerative cooling.
Comparing sulphate process with sulphite process, we find that ____ in the later.
both temperature & pressure in the former is more than that
Which of the following is a disacchride ?
Sucrose
Proximate analysis of coal determines its ____ content.
moisture & volatile matter
Pick out the exothermic reaction out of the following:
CaC
____ is produced using polycondensation reaction.
Phenol formaldehyde
Raw materials required for the manufacture of ____ is acetylene and hydrochloric acid.
vinyl chloride
In industrial nomenclature, alcohol means
ethanol
Which of the following is the purest form of water out of the following ?
Rain water
Use of water having dissolved oxygen in boilers promotes
corrosion
Unsaturated oils compared to saturated oils have
lower melting point & higher reactivity to oxygen.
With increase in temperature, the equilibrium constant at constant pressure (Kp) for oxidation of sulphur dioxide
decreases
Chemical formula of oleum is
H
Electrodeposition of metals i.e. electroplating is never done on
refractories
Hollander beater used during paper pulp manufacture does not facilitate the ____ of fibre.
strengthening
The biochemical treatment applied to sewage effluents is a process of
oxidation
Ultimate analysis of coal determines its ____ content.
carbon, hydrogen, nitrogen & sulphur
A cane sugar factory having sugar production rate of 10 tons/day will produce about ____ tons/day of bagasse (after consumption by the factory for heating etc.).
10
Sucrose content in cane sugar may be around ____ percent.
95
Hollander beater’ machine used in the paper manufacturing plant does not accomplish the task of
final rolling out of paper.
Yellow glycerine is made into white, using
activated carbon
Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is ____ °C.
30 to 50
Brackish water which contains mostly dissolved salt, can be purified by the ____ process.
reverse osmosis
Major component of flint glass is
lead oxide
Gypsum is chemically
calcium sulphate
Calcination of gypsum produces
plaster of paris
Phthalic anhydride is produced by the oxidation of
benzene
Superior quality laboratory apparatus is made of the ____ glass having low thermal co-efficient of expansion & high chemical resistance.
pyrex
Zeigler process
produces high density polyethylene.
Massecuite is
none of these.
Carbon content of pitch (residue of coal tar distillation) is around ____ percent.
94
Sodium salt of higher molecular weight fatty acid is termed as the ____ soap.
soft
Synthetic glycerine is produced from
propylene
A ‘unit process’ is exemplified by the
hydrogenation of oils
Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H
all (a), (b) and (c).
Viscosity index improver (like polystrene or polyisobutylene) is added to lubricant to
reduce the variation in its viscosity with temperature.
Pick out the wrong statement pertaining to solvent extraction of oil.Rate of extraction
decreases as the moisture content of flakes increases.
Sea weeds are an important source of
iodine
Polythene is a/an ____ polymerisation product.
addition
Catalytic oxidation-dehydrogenation of methyl alcohol produces
formaldehyde
In multistage equilibrium conversion of SO
removing some quantity of SO
Tall oil obtained as a by-product from the black liquor recovery is
all (a), (b) & (c).
____ is a polysacchride.
Starch
Styrene is produced from ethyl benzene by the process of
dehydrogenation
Acetone is produced by catalytic dehydrogenation of
isopropanol
Nitrogen is an essential component of
proteins
Bromine content in sea water may be around ____ ppm.
70
Argon is the third largest constituent of air (followed by N
0.94
Poly tetraflouro ethylene (P.T.F.E.) is known as
teflon
Bakelite is
same as thermosetting phenol-formaldehyde.
____ is produced by the dehydrogenation of ethyl benzene.
Styrene
Which of the following is used as a coagulant in water treatment ?
Ferrous sulphate
____ paper is used in the manufacture of newsprint paper.
Groundwood
Hydrodenation of vegetable oils is a/an ____ reaction.
exothermic
Permanent hardness of water is due to the presence of calcium & magnesium
sulphates & chlorides
Concentration of sulphide ores is done usually by
froth floatation
Dacron is a/an
polyester
Sodium carbonate (soda ash) is not used in the manufacture of
detergents
Viscose rayon
utilises H
Nylon 6-6 is manufactured from
hexamethylene diamine and adipic acid.
Glauber’s salt is chemically represented by
Na
Chemical name of Grignard reagent is
ethyl magnesium chloride.
Which of the following processes is absent in glass manufacturing process ?
Sintering
Production of one ton of dry paper pulp requires about ____ tons of bamboo or wood.
2.5
Dacron (or terylene) fibres as compared to nylon’fibres have
all (a), (b) and (c).
Grignard reagent is chemically known as
ethyl magnesium chloride.
The function of gypsum addition during cement making is to
decrease the cement setting rate.
Low purity oxygen is used for
chemical oxidation processes.
____ is produced using molasses as the starting raw material.
Ethyl alcohol
Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have
sharp melting points.
A substance produced by a living organism and capable of anti-microbial activity is called a/an
antibiotic
Deaeration of water in its treatment is necessary, as it
minimises its corrosiveness.
Hydrochloric acid is also known as
muriatic acid
Aryl benzene sulphonate (ABS) is a
detergent.
Adipic acid is an intermediate in the manufacture of
nylon-66
The temperature in the calcium carbide furnace is ____ °C.
2000-2200
Vinyl chloride (CH
4 kgf/cm
Soaps remove dirt by
none of these.
Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement ?
Calcium & aluminium stearate
Chemical name of soda ash is
none of these
Out of the following processes of paper pulp manufacture, the maximum corrosion problem in digestion & handling equipments is encountered in the ____ process.
neutral sulphite semi-chemical
____ is used as a flux in the extraction of iron from iron ore (hametite) in blast furnace.
Limestone
Gun powder uses
all (a), (b), & (c)
Dichloro diphenyl ____ is the full form of DDT (an insecticide).
trichloroethane
The basic difference between vegetable oils and fats is in their
physical state
Which of the following is not a food additive?
Ammonium chloride
Alum is commercially produced from
bauxite
CaO is called
quick lime
Starting raw material for the manufacture of maleic anhydride is
either (a) or (b)
Pick out the wrong statement.
Presence of sodium sulphate in pulp makes the pulp bleachability poor.
Which of the following contains least amount of N
Coke oven gas
Calcination of limestone is not done in a ____ kiln for producing lime.
fixed bed
Neoprene is a
synthetic rubber
Saponification value/number of an oil or fat is a measure of its
average molecular weight.
Ethyl alcohol cannot be produced
none of these.
Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at ____ °C.
15-30
Cement mainly contains
CaO, SiO
Sand and ____ is fused at 1300°C, to produce sodium silicate.
soda ash
Coke used for the production of calcium carbide should have
all (a), (b) and (c).
Sucrose is a disaccharide consisting of
glucose and fructose
Function of sodium thiosulphate (hypo) in development of photographic film/plate is to
remove unexposed silver halide.
High temperature carbonisation of coal takes place at ____ °C.
1100
White phosphorous is stored under water, because
its kindling temperature in dry air is very low.
____ is not a constituent of gun powder.
Carbon
Hydrophilic group of a soap or detergent solution is
water loving
Rotary kiln is not involved in the production of
slaked lime from quick lime
Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is ____ °C.
60-70
Vanillin is a type of
flavour
Temporary hardness of water can be removed by
boiling.
More than 100 percent of ____ is present in oleum.
H
Pure rectified spirit contains about ____ percent alcohol.
95
Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about ____ °C.
-183
Titanium dioxide is a/an ____ colour pigment.
white
Mercury cells for caustic soda manufacture, compared to diaphragm cells
none of these.
Cellulose percentage in bamboo fibre is about
50
Essential oils are usually obtained using
steam distillation
Impurities present in brine is normally removed by treatment with
all (a), (b) and (c).
Hydrogenation of oil/fat does not
none of these.
Solvay process as compared to dual process (i.e. modified Solvay process)
both (b) and (c).
Builders are added in soap to act as
cleaning power booster
H2S is scrubbed from refinery gases by absorption using
ethanol amine
Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction?
Oxidation of Cl
Zeolite is a/an
naturally occuring clay which is capable of exchanging cations.
Type of glass used in optical work is the ____ glass.
lead
Pick out the wrong statement pertaining to the soap manufacture.
Transparent soaps are made by cold process.
Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material ?
Teflon
Glass is
a super cooled liquid
Analgesic drugs are
pain relievers
Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about ____ °C.
-183
Commonly used glass is known as the ____ glass.
soda
Fusion of limestone and ____ produces high alumina cement.
bauxite
Massacuits is a terminology used in the ____ industry.
sugar
The basic constituent of vegetable oils is
triglyceride
The most economical pulp for the production of newsprint would be the ____ pulp.
groundwood
Which of the following is the second major component of cement ?
SiO
Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it
all (a), (b) and (c).
____ are used as corrosion inhibitor for iron & steel in aqueous solutions.
Chromates
L.D. converter is used in the production of
steel
The terminology ‘BTX’ used in coal tar distillation industry refers to
benzene-toluene-xylene.
Which of the following is not responsible for causing permanent hardness of water ?
Ca(HCO
In the Solvay process, the product from the calciner is
light soda ash
Commercially ethylene is produced from naphtha by
hydrocracking.
Poly Vinyl Chloride (P.V.C.) is a ____ material.
thermoplastic
Pig iron is produced by blast furnaces in India using mostly the iron ore named
hematite
The difference between saponification value and acid value is
called ester value.
Fourdrinier machine is used in the manufacture of
paper
Pencillin is made employing ____ fermentation process.
aerobic batch
Sulphuric acid saturated with SO
oleum.
Nylon 66 is so named because the
average degree of polymerisation of the polymer is 1966.
Wet chlorine gas produced during electrolysis of brine is dehydrated by
spraying 66° Be H
CaSO
plaster of Paris
____ of quicklime produces slaked lime.
Hydration
Main product in calcium carbide-water reaction is
C
Glauber’s salt is chemically
none of these
Which of the following fuel gases contains maximum amount of carbon monoxide ?
L.D. converter gas
Baking soda is chemically represented by
NaHCO
P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as
teflon
Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo ?
Depithing
Percentage of glycerene present in the spent lye obtained during soap manufacture is about
5
Concentration of NaOH solution produced by diaphragm electrolytic cell is about ____ percent.
10
Commercial production of Vanaspati is done by ____ of edible vegetable oils.
hydrogenation
Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene ?
AgO
Phenolic antiseptics are added in the ____ soap.
medicated
Solvay process is used for the manufacture of
soda ash
A mixture of chlorine & sodium bromide acts as a/an
fire retardant
Which is a high grade pulp ?
Sulphate pulp
Stereospecific agents are exemplified by
all (a), (b) & (c)
Starting material for the production of butadiene in India is
ethyl alcohol
Yellow phosphorus is transported under
water
Permanent hardness of water can be removed by
passing it through cation & anion exchangers.
Celluloid is chemically
cellulose nitrate
Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of
sulphuric acid
Which of the following is an explosive ?
All (a), (b), and (c)
Zeolite is used in the
water treatment.
Thermoplastic materials
none of these.
Carbon tetrachloride (CCl
perchloroethylene
Salt is added in the kettle during soap manufacture to separate
soap from lye.
Manufacture of phthalic anhydride uses ____ as a catalyst.
V
Which of the following is not a product of coal tar distillation ?
None of these
Teflon is
poly tetrafluoroethylene (P.T.F.E.).
Chrome tanning and vegetable tanning are done for
light & heavy leather respectively.
Catalyst used during the manufacture of ‘Vanaspati Ghee’ is
nickel
Iron ore hametite is concentrated using
gravity separation.
Refractory bricks burnt at very high temperature have got
greater resistance to corrosion by slags.
Nitrile rubber is produced by the polymerisation of
acrylonitrile and butadiene.
Carbon disulphide is mainly used in the production of
viscose rayon.
99.5% purity oxygen is used in
all (a), (b), and (c).
Nylon-6 is manufactured from
caprolactum.
Permanent hardness of water can be removed by
boiling it with Na
Sizing material is incorporated in paper to
impart resistance to penetration by liquids.
Pick out the wrong statement.
Oils and fats are alkaloids.
Which of the following, when pyrolysed, produces perchloro-ethylene ?
Carbon tetrachloride
Chemical name of aspirin (an analgesic drug) is
acetylsalicylic acid
Which is the most efficient absorbant for SO
98%H
Coal tar is used as a
all (a), (b) and (c).
Caprolactum (a raw material for nylon-6 manufacture) is produced from
benzene
The purpose of adding Na
permit the use of alum as a coagulant.
Ca(OH)
slaked lime
Percentage of uranium in carnotite ore found in Jadugoda (Jharkhand) is about
0.1 to 0.5
Potassium is kept & transported under
kerosene oil
The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by
electrolytic reduction
Bakelite is chemically known as
phenol formaldehyde
Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine ?
H
Phthalic anhydride is made by the
oxidation of naphthalene.
RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically
cyclo trimethylene trinitramine.
Raw material used in alcohol distilleries in India is
molasses
Oil produced by solvent extraction
neither (a) nor (b).
High acid value of an oil or fat is an indication of
storage under improper conditions.
Yeast is used in the manufacture of
wine
Liquefaction of gases can not be done by
merely compressing it beyond critical pressure.
Anion exchanger is regenerated usually with
NaOH
____ is the major constituent of the Portland cement.
Tricalcium silicate
Catalytic oxidation of naphthalene produces
phthalic anhydride
Parathion and Malathion are
pesticides.
Transparent soaps (e.g. Pears) are
usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency.
Dehydrogenation of ethyl benzene produces
styrene
Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces
dacron
Lindane is
BHC (Benzene Hexa Chloride) containing 99% γ-isomer.
Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate
is soluble in ammonium chloride and potassium chloride solution.
Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?
Sodium borate
In the production of soda ash by Solvay process, the by-product is
CaCl
The ideal pulp for the manufacture of paper should have high ____ content.
cellulose
At very high concentration of enzymes, the rate of fermentation chemical reaction is ____ the concentration of reactants.
independent of
Which of the following is a constituent of vinegar ?
Both (a) and (b)
During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as
its viscosity is not reduced on further heating (hence pressure drop on pumping it, cannot be further reduced).
Kopper-Totzek coal gasifier
can give ammonia synthesis gas (H
Addition of calcium oxide to water produces
all (a), (b) & (c)
Sodium bisulphite is used for ____ water.
both (a) & (b)
Riboflavin is a/an
vitamin
Flash point of most vegetable oils is about ____ °C.
200
Presence of sodium tripolyphosphate (an additive) in synthetic detergent
facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions).
Dense soda ash used in the manufacture of glass, is chemically represented by
Na
Reverse osmosis is normally used for the
desalination of brackish water to produce potable (drinking) water.
Hydrazine is largely used
as rocket fuel.
Synthesis gas’ meant for the synthesis of organic compound is a variable mixture of
CO & H
Litharge is
lead oxide
Coagulant is used ____ filtration.
before
10% oleum comprises of 10% free
SO
Use of chlorine in the treatment of sewage
helps in grease separation.
Removal of dirt/soil by soaps or detergent does not involve the ____ of soil.
precipitation
A unit operation is exemplified by the process of
desorption
The major constituents of glass are
sand, lime and soda ash
Margarine is a/an
fat
Oils and fats are converted to soap in a process called
saponification
Glycerine can be obtained from
fat
Blue vitriol is chemically
copper sulphate
Trinitro-toluene (TNT) is
an explosive.
Thorium is mainly used
for the manufacture of gas mantles.
During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to
avoid corrosion.
Good quality of edible salt is obtained from brine by the process of
vacuum evaporation
Electric bulbs are made of ____ glass.
flint
Which of the following is used as a binding material in soap to improve soap texture ?
Borax
An alkali metal salt of palmitic acid is known as
metallic soap
Washing soda is chemically represented by
Na
Magnesium and calcium ____ cause temporary hardness of water.
bicarbonates
Which form of sulphur is the most stable at room temperature ?
Rhombic
Vegetable oils and fats basically differ in their
physical state
Average sulphur content in Indian pyrites is about ____ percent.
35
Oil is a/an
mixture of glycerides of fatty acids.
Which of the following is a constituent of coffee ?
Caffeine
Which of the following is the main constituent of the mother liquor produced in salt industry ?
Bromine
Silicon carbide is a/an
abrasive
Oxygen is produced by fractionation of air using ____ process.
either (a) or (b)
Trinitrotoluene (TNT), an explosive, is made by the nitration of
toluene
Which of the following is used as a coagulant in treating turbid water ?
Ferric sulphate
Carborundum consists mainly of
silicon carbide
Wax is a
mixture of esters of polyhydric alcohols excepting glycerine.
Catalyst used in the hydrogenation of oil is
nickel
Viscose rayon is
none of these.
Triple superphosphate is manufactured by reacting
phosphate rock with phosphoric acid.
Use of hydrated lime in water treatment
all (a), (b) and (c).
Higher vicosity index of a lubricating oil denotes
less changes in fluidity of oil with temperature.
Le-Blanc process is a primitive process for the manufacture of
soda ash
How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln?
1000°C
Cement setting under water employs a/an ____ process.
hydration
____ are added in lacquers to remove film brittleness and to improve adhereness.
Plasticisers
Washing of coal is done to
both(b) and (c).
Systemic insecticides
are absorbed throughout the plant.
Dry ice (solidified CO
storage & shipment of frozen foods and ice-creams.
In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the
diamine and the dibasic acid.
Chemical formula of BHC, which is an insecticide is
C
A bio-catalyst produced by living cells which acts independent of the cell is called a/an
enzyme
Pick out the wrong statement.
Benzene hexachloride is not a contact insecticide.
The product obtained on mixing calcium oxide with water is called
slaked lime
The major constituent of black liquor generated during paper manufacture is sodium
carbonate
Plaster of Paris is
both (a) and (b)
Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulphonic acid produces sodium dodecylbenzene sulphate, which is a/an
detergent
Conversion of SO
98
Coke oven gas consists mainly of
H
Chemical name of ‘alum’ is
aluminium sulphate.
