INDIABIX-CHEMICAL PROCESS Flashcards
Oxidation of SO2 to SO3 is favored by
A. low temperature and low pressure.
B. low temperature and high pressure.
C. high temperature and low pressure.
D. high temperature and high pressure.
B. low temperature and high pressure.
Gun powder, an explosive, comprises of
charcoal, sulfur and .
A. glycerin
B. saltpeter
C. nitroglycerin
D. dynamite
B. saltpeter
The starting raw material for the manufacture
of alum is .
A. alumina
B. gypsum
C. bauxite
D. ammonium bicarbonate
C. bauxite
Paper pulp produced by kraft/sulfate process
is .
A. bleached easily
B. dull white in color
C. strong & fibrous
D. dark colored
C. strong & fibrous
Claude process of gas liquefaction employs
A. merely compression of gas beyond its critical pressure.
B. Joule-Thomson expansion cooling.
C. heat exchange with colder stream.
D. adiabatic expansion against a piston or in a turbine.
D. adiabatic expansion against a piston or in a turbine.
Viscose rayon is chemically .
A. cellulose nitrate
B. regenerated cellulose nitrate
C. cellulose acetate
D. regenerated cellulose acetate
D. regenerated cellulose acetate
Styrene is produced from ethyl benzene by
the process of .
A. dehydrogenation
B. oxidation
C. alkylation
D. dehydration
A. dehydrogenation
Gelatin which is a nitrogenous organic protein
is obtained by the hydrolysis of .
A. tannin
B. molasses
C. chitin
D. collagen
D. collagen
Sucrose content in the raw juice extracted
from sugar cane is about %.
A. 1 - 2
B. 15 - 20
C. 50 - 60
D. 80 - 85
B. 15 - 20
Fusel oil is a/an
A. essential oil.
B. extract from medicinal herbs.
C.mixture of higher molecular weight alcohols (a
by-product obtained during production of alcohol
from molasses).
D. none of these
C.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 .
A. poorer tensile strength.
B. poorer resistance to oxidation.
C.greater amount of heat build-up under
heavy loading.
D. all (a), (b) and (c).
D. all (a), (b) and (c).
Coefficient of thermal expansion of glass is
decreased by the addition of during its
manufacture.
A. CaO
B. MnO2
C. ZnO
D. FeS
C. ZnO
The catalyst used in the manufacture of DDT (from
chloral and chlorobenzene) is
A. dilute H2SO4
B. oleum
C. ultraviolet light
D. none of these
B. oleum
Epoxy resin
A. is a good adhesive.
B. is an elastomer.
C. cannot be used for surface coatings.
D. is a polyester.
A. is a good adhesive.
Which of the following is the most adverse factor
challenging the choice of mercury electrolytic cell
process for the production of caustic soda?
A. High cost of mercury.
B. High specific gravity of mercury.
C. Non-availability of high purity mercury.
D. Pollution of water stream by mercury
D. Pollution of water stream by mercury
Esterification reaction produces
A. aerosol
B. trans fat
C. soap
D. mercaptans
C. soap
Wood charcoal is used for decoloration of sugar
because it the colored materials.
A. adsorbs
B. oxidizes
C. reduces
D. converts
A. adsorbs
Producer gas consists mainly of
A. CO, CO2, N2, H2
B. CO, H2
C. H2, CH4
D. C2H2, CO2, H2
A. CO, CO2, N2, H2
Neoprene is the trade name of
A. polyurathane
B. phenol formaldehyde
C. polychloroprene
D. styrene-butadiene rubber
C. polychloroprene
Sulfur addition in soap is done to
A. improve the soap texture.
B. cure pimples & dandruff.
C. fasten lather formation.
D. increase its cleansing action.
B. cure pimples & dandruff.
Phosphate rock is a raw material for the
manufacture of
A. phosphoric acid
B. phosphorous
C. superphosphates
D. all of the above
D. all of the above
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
A. poor oxidation stability and high gum forming tendency.
B.greater tendency of decomposition at elevated
temperature.
C. hydrolysis tendency in presence of water.
D. all of the above
D. all of the above
Which of the following is NOT a raw material used
for the manufacture of ordinary glass?
A. Iron oxide
B. Soda ash
C. Limestone
D. Silica
A. Iron oxide
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
A. calcium sulphate
B. sodium chloride
C. sodium sulphate
D. magnesium chloride
B. sodium chloride
Pasteurization of milk means
A. removal of fatty and albuminous substance from it.
B.killing of organisms present in it by heating it at
controlled temperature without changing its natural
characteristics.
C.inhibiting the growth of micro-organisms without
killing them.
D. none of these.
B.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.
A. alum
B. limestone
C. coke
D. quartz
B. limestone
_________ process is used for the manufacture
of sodium carbonate by ammonia soda process.
A. Ostwald’s
B. Bosch
C. Solvay
D. Haber’s
C. Solvay
Polycaprolactum is commercially known as
A. nylon-6
B. nylon-66
C. dacron
D. rayon
A. nylon-6
Frasch process is for
A. making oxygen
B. producing helium
C. mining sulfur
D. making nitrogen
C. mining sulfur
Pitch (a product of coal tar distillation) is always
mixed with creosote oil, when it is to be burnt in a
burner, because
A. its calorific value is very less.
B. tar neutralizes the residual acids present in pitch.
C.it reduces viscosity and imparts fluidity for its
transportation through pipelines at economic
pressure drop.
D. all of the above
C.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?
A. C
B. CO
C. CO2
D. H2
B. CO
The drug used in contraceptives is
A. sulphadizene
B. mestranol
C. methyl salicylate
D. cholecalciferol
B. mestranol
Raw materials used for producing _____
cement does not contain iron oxide.
A. waterproof
B. slag
C. white
D. pozzolan
C. white
In the Lurgi coal gasifier
A. coking coals cannot be used.
B. low carbon conversion efficiency is achieved.
C. entrainment of solids is higher.
D. large quantity of coal can be processed.
D. large quantity of coal can be processed.
Neon gas is
A. flammable in nature.
B. used in color discharge tube.
C. filled in lamps having tungsten filament.
D. all (a), (b) and (c).
B. used in color discharge tube.
Salt cake is chemically represented by
Na2SO4
CaSO4.H2O
MgSO4
BaSO4
Na2SO4
Which of the following sugars is the sweetest?
Glucose
Fructose
Sucrose
Lactose
Fructose
The main use of HCl is in the __.
drilling of petroleum wells and pickling of steel sheets.
manufacture of cationic detergent.
treatment of spent fuel of nuclear reactor.
none of these.
drilling of petroleum wells and pickling of steel sheets.
The gasification reaction represented by, C + H2O = CO + H2, is a/an __________ reaction.
exothermic
endothermic
catalytic
autocatalytic
endothermic
All enzymes are made of ___.
fats
carbohydrates
proteins
amino acids
proteins
The chamber process is ____.
preferred over contact process for producing 98 to 100% H2SO4 and various oleums.
non-catalytic and operates only on pyrites.
a batch process for directly producing high strength (98 to 100%) H2SO4.
none of these.
none of these.
The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
dilute H2SO4
oleum
ultraviolet light
none of these
oleum
Haemoglobin is a/an
amino acid
biological catalyst
protein
enezyme
protein
Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.
10
25
50
98
50
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).
is not unfit for drinking purpose.
Which of the following is an organo-metal-lic compound ?
Isopropyl alcohol
Tetra-ethyl lead
Zeolite
Cumene
Tetra-ethyl lead
Esterification reaction
produces soap.
is reversible.
is a reaction between an alcohol and an organic acid.
all (a), (b) and (c).
all (a), (b) and (c).
Very fine suspended and colloidal impurities are removed from water by a process called
sedimentation
coagulation
disinfection
softening
coagulation
Calgon used in water treatment is chemically
sodium phosphate
sodium hexametaphosphate
calcium phosphate
tricresyl phosphate
sodium hexametaphosphate
Which oil is preferred for paint manufacture?
Drying oil
Non-drying oil
Semi-drying oil
Saturated oil
Drying oil
Styrene butadiene rubber (SBR) is
a natural rubber.
a synthetic polymer.
a synthetic monomer.
another name of silicone rubber.
a synthetic polymer.
Cumene is the starting material for the production of
benzoic acid
phenol and acetone
isoprene
styrene
phenol and acetone
The type of high refractive index glass used in optical instruments is __________ glass.
pyrex
flint
crookes
none of these
flint
Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.
nickel
vanadium
alumina
iron
vanadium
Most commonly used rubber vulcanising agent is
sulphur
bromine
platinum
alumina
sulphur
Dehydrogenation of isopropanol produces
propyl alcohol
acetone
trichloroethylene
formaldehyde
acetone
Concentration of hydrogen peroxide is done by
crystallisation
vacuum crystallisation
atmospheric distillation
dehydration
vacuum crystallisation
Helium is produced on commercial scale from
air
natural gas
coke oven gas
none of these
natural gas
The catalyst used in the manufacture of DDT is
alumina
silica.
20% oleum.
aluminium chloride.
20% oleum.
Most widely and commonly used coagulant for the removal of suspended impurities in water is
bleaching powder
slaked lime
alum
copper sulphate
alum
__________ is used as a catalyst in fat splitting.
ZnO
Ni
V2O5
FeO
ZnO
Which of the following is not produced on commercial scale from sea water?
Bromine.
Magnesium compounds.
Potassium compounds.
Sodium sulphate.
Sodium sulphate.
Heating of __________ to 120°C, produces plaster of paris.
blue vitriol
gypsum
calcium silicate
calcium sulphate
gypsum
Which of the following has sodium bicarbonate as its main constituent?
Baking soda
Baking powder
Washing soda
none of these
Baking powder
In primitive days, __________ was being manufactured by Leblanc Process.
alum
washing soda
soda ash
calcium carbide
soda ash
The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at
SASOL (in South Africa).
Redcar (U.K.).
Los-Angles (U.S.A.).
Trombay (India).
SASOL (in South Africa).
Lurgi coal gasifier is a pressurised __________ bed reactor.
moving
fixed
fluidised
entrained
moving
Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils
a) cause cholesterol build up and blood clotting.
b) are prone to rancid oxidation.
always contain some amount of nickel (as their c) complete removal is very difficult).
d) have affinity to retain harmful sulphur compounds.
a) cause cholesterol build up and blood clotting.
Paper grade bamboo contains about __________ percent cellulose.
5
20
40
60
5
Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
surfactant
builder
optical brightening agent
anti soil redeposition agent
anti soil redeposition agent
Vulcanisation of rubber
decreases its tensile strength.
increases its ozone & oxygen reactivity.
increases its oil & solvent resistance.
converts its plasticity into elasticity.
converts its plasticity into elasticity.
Raw materials for ‘Solvay Process’ for manufacture of the soda ash are
salt, limestone and coke or gas.
ammonia, salt and limestone.
ammonia limestone and coke.
none of these.
salt, limestone and coke or gas.
Chloral is used in the manufacture of
DDT
BHC
parathion
none of these
DDT
Sudden temperature fluctuation does not affect pyrex glass, because of its
low co-efficient of expansion.
high co-efficient of expansion.
high melting point.
both (b) and (c).
low co-efficient of expansion.
The process used for the manufacture of ethyl alcohol from molasses is
distillation
dehydration
dehydrogenation
none of these
none of these (fermentation)
__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia.
Solvay
Ostwald’s
Haber’s
none of these
Ostwald’s
The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is
alumina
silica gel
platinum
nickel
alumina
Zeolite used in water softening process (cation exchange) is regenerated by washing with
brine
chloramines
sodium bisulphite
liquid chlorines
brine
The catalyst used in shift converter is
nickel
vanadium
silica gel
alumina
nickel
Drinking (potable) water treatment does not involve
coagulation
sedimentation
softening
disinfection
softening
Phenol formaldehyde resin is used as an adhesive in making
laminates
card boxes
furniture
books
laminates
DDT should not be allowed to come in contact with iron (during its manufacture) to
a) avoid its decomposition.
b) prevent sulphonation of the
monochlorobenzene by the acid catalyst.
c) achieve non-hygroscopic property.
d) none of these.
a) avoid its decomposition.
DDT stands for
diethyl-diphenyl-trichloromethane.
dichloro-diphenyl-trichloromethane.
diphenyl-dichloro-trichloromethane.
dichloro-diphenyl-trichloroethane.
dichloro-diphenyl-trichloroethane.
Phosphoric acid is prepared from
cryolite
chalcopyrite
rock phosphate
none of these
rock phosphate
Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used
as a lubricant.
as a rust preventive.
in hard water for cleaning of cloth.
as a foam depressant in distillation column.
as a lubricant.
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
Lime-soda process
Bleaching action of bleaching powder is due to its __________ properties.
reducing
oxidizing
disinfecting
none of these
oxidizing
Which of the following is not required in the manufacture of soda ash by Solvay process ?
Ammonia
Limestone
Nitric acid
None of these
Nitric acid
The purpose of tanning in leather industry is to
stiffen the leather.
smoothen the leather.
make it flexible.
impart water resistance.
stiffen the leather.
Lime and soda ash are added to water to remove
a)bicarbonates & sulphates of calcium and magnesium.
b)undersirable taste and odour.
c)bacteria.
d)its corrosiveness.
a)bicarbonates & sulphates of calcium and magnesium.
Kaoline is a/an
refractory material
synthetic resin
artificial abrasive
blue pigment
refractory material
Phenol is mainly used
to produce benzene.
to produce phenol formaldehyde.
to produce polyester resin.
as a plasticiser for unsaturated polyster.
to produce phenol formaldehyde.
Main constituent of dolomite is
CaCO3
MgCO3
K2CO3
Na2CO3
MgCO3
Conversion of CO to CO2 by steam in presence of a catalyst is called
steam reforming.
shift conversion.
steam gasification.
none of these.
shift conversion.
Refractory bricks having high thermal conductivity is desirable, when it is to be used in the
L.D. converter
blast furnace
rotary kiln
recuperator
recuperator
Bromides contained in hot mother liquor is treated with __________ during manufacture of bromine from sea water.
SO3
Cl2
NH3
SO2
Cl2
Plasticisers are added to paints to
make it corrosion resistant.
make glossy surface.
give elasticity & prevent cracking of the film.
increase atmospheric oxidation.
give elasticity & prevent cracking of the film.
Resistance to fusion of the refractory under a steady rising temperature condition is called
spalling
refractoriness
both (a) & (b)
neither (a) nor (b)
refractoriness
Portland cement consists mainly of
CaO & SiO2
SiO2 & Al2O3
CaO & Al2O3
CaO & Fe2O3
CaO & SiO2
__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.
Pyrex
Soda lime
Lead
High silica
Pyrex
The amount of benzene present in pure benzol is about __________ percent.
30
50
70
90
70
Cumene (isopropyl benzene) is made by
oxidation of napthalene.
propylene alkylation of benzene.
polymerisation of a mixture of benzene & propylene.
none of these.
propylene alkylation of benzene.
Which of the following is not a pyrite ore?
Celestite
Galena
Gypsum
Siderite
Siderite
Mannheim furnace is used in the manufacture of
hydrochloric acid.
H2SO4 by Chamber process.
calcium carbide.
corundum.
hydrochloric acid.
Thermosetting materials
are cross-linked molecules.
soften on application of heat.
are solvent soluble.
none of these.
are cross-linked molecules.
Pick out the wrong statement. Iodine value of an oil or fat is
a) the number of grams of iodine taken up by 100 gm of oil or fat.
b) a measure of its unsaturation.
c) helpful in findings its adulteration & its suitability for making soap.
d) independent of the type of oil, whether it is drying or non-drying.
d) independent of the type of oil, whether it is drying or non-drying.
Nickel is not used as a catalyst in the
Fischer-Tropsch process.
shift conversion.
hydrogenation of oil.
Ostwald’s process of HNO3 manufacture.
Ostwald’s process of HNO3 manufacture.
_________ iron is the purest form of iron.
Cast
Wrought
Pig
High silicon
Wrought
Enamels
give good glossy finish.
are same as varnish.
are prepared from non-drying oil.
do not contain pigment.
give good glossy finish.
Black liquor is converted into white liquor by
a) evaporation and burning the concentrate followed by causticisation of products.
b) multi-effect evaporation only.
c) selective liquid extraction.
d) extractive distillation.
a) evaporation and burning the concentrate followed by causticisation of products.
Varnish does not contain
thinner
pigment
both (a) & (b)
neither (a) nor (b)
pigment
Alcohol is produced by the
oxidation of an aldehyde
hydrolysis of an ether
esterification of a fat
none of these
hydrolysis of an ether
Varnish does not contain
pigment
thinner
dryer
anti-skimming agent
pigment
Polymerisation product of C2F4 (carbon tetraflouride) is called P.T.F.E (poly chloro tetra flouro ethylene). It is also called
polyurethane
silicone
teflon
epoxy resin
teflon
Solvent used for extraction of oil is
hexane
methyl ethyl ketone
furfural
none of these
hexane
Insulin is an __________ drug.
anti-malarial
anti-TB
antibiotic
none of these
none of these
Liquor poisoning generally occurs due to the presence of __________ in it.
ethyl alcohol
impurities
methyl alcohol
carbonic acid
methyl alcohol
Neoprene is chemically known as
polybutadiene
styrene butadiene rubber (SBR)
polyurathane
polychloroprene
polychloroprene
Pick out the wrong statement.
a) Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80%.
b) Contact process of sulphuric acid manufacture produces pure acid of concentration ≥ 98%.
c) 75% oleum can be produced by distillation of 20% oleum.
d) Contact process of sulphuric acid manufacture uses nickel as the catalyst.
d) Contact process of sulphuric acid manufacture uses nickel as the catalyst.
Pick out the wrong statement.
a) Catalytic hydrogenation of carbon monoxide produces methyl alcohol.
b) In nylon-6, the number 6 represents the total number of carbon atoms in the ring.
c) Raw materials for DDT manufacture are benzene and chlorine.
d) Ethanolamines are produced by using ammonia and ethylene oxide as raw material.
c) Raw materials for DDT manufacture are benzene and chlorine.
Molecular weights of polymers are in the range of
10^2 - 10^2
10^5 - 10^9
10^2 - 10^7
10^9 - 10^11
10^2 - 10^7
Sulphur removal by heating of pyrite ore in presence of air is called
reduction
roasting
calcination
smelting
roasting
Deacon’s method is used for the manufacture of
glauber’s salt
common salt
chlorine
graphite electrode
chlorine
Pick out the true statement pertaining to water treatment.
a) Slow sand filters can remove colour completely.
b) Activated carbon can be used for taste & odour control without subsequent filtration.
c) Application of activated carbon reduces the temporary hardness of water.
d) Normally, the turbidity is removed by adding a coagulant prior to sedimentation.
d) Normally, the turbidity is removed by adding a coagulant prior to sedimentation.
Laboratory glass wares which reacts with hydroflouric acid, are made of the __________ glass.
lead
borosilicate
soda lime
alkali silicate
borosilicate
Prussian blue is chemically represented by
FeO.TiO2
Ca SO4 . 2H2O
Fe4 [Fe (CN6)3]
AlF3 . 3NaF
Fe4 [Fe (CN6)3]
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
hydrochloric acid
methyl alcohol
formic acid
nitric acid
The most stable allotropic form of phosphorous is the __________ phosphorous.
white
black
yellow
red
black
Function of thinner in a paint is to
accelerate the oxidation of oil.
prevent gelling of the paint.
suspend pigments & dissolve film forming materials.
form a protective film.
suspend pigments & dissolve film forming materials.
Starting material for the production of styrene butadiene rubber (SBR) is
ethyl alcohol
ethylene
both (a) & (b)
neither (a) nor (b)
both (a) & (b)
Which one of the following is not an elastomer ?
Polyisoperene
Neoprene
Nitrile-butadiene
None of these
None of these
Which of the following processes can remove both temporary as well as permanent hardness of water?
Filtration
Boiling
Distillation
None of these
Distillation
Dacron is a
a) condensation product of hexam-ethylene diamine and adipic acid.
b) thermosetting material.
c) condensation product of dimethyl terephthalate and ethylene glycol.
d) none of these.
d) none of these.
Rancidity of the fatty oil can be reduced by its
decoloration
hydrogenation
oxidation
purification
hydrogenation
__________ of rubber decreases after its vulcanisation.
Resistance to the action of organic solvent
Tackiness
Maximum service temperature
Tensile strength
Tackiness
Boiling of water containing temporary hardness produces
CO2
CaSO4
CaHCO3
none of these
CO2