IBX - CPI Sec. 7 to 9 Flashcards
IndiaBIX - Chemical Process (Sections 7 to 9)
Which of the following contains least amount of N2?
Coke oven gas
Blast furnace gas
Producer gas
Water gas (blue gas).
Coke oven gas
Calcination of limestone is not done in a __________ kiln for producing lime.
vertical shaft
rotary
fluidised bed
fixed bed
fixed bed
Neoprene is a
monomer
synthetic rubber
polyester
none of these
synthetic rubber
Saponification value/number of an oil or fat is a measure of its
fatty acid content.
degree of unsaturation of the fatty acids present in it.
average molecular weight.
insoluble fatty acid content.
average molecular weight.
Ethyl alcohol cannot be produced
from waste sulphite substrate of paper mills.
by esterification and hydroloysis of ethylene.
from molasses.
none of these.
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
90-100
250-300
<0
15-30
Cement mainly contains
CaO, SiO2, Al2O3
MgO, SiO2, K2O
Al2O3, MgO, Fe2O3
CaO, MgO, K2O
CaO, SiO2, Al2O3
Sand and __________ is fused at 1300°C, to produce sodium silicate.
limestone
soda ash
coke
sodium sulphate
soda ash
Coke used for the production of calcium carbide should have
low ash content.
low ignition temperature.
high electrical resistivity.
all (a), (b) and (c).
all (a), (b) and (c).
Sucrose is a disaccharide consisting of
glucose and glucose
glucose and fructose
glucose and galactose
fructose and galactose
glucose and fructose
Function of sodium thiosulphate (hypo) in development of photographic film/plate is to
brighten the faint images.
remove metallic silver.
convert silver chloride to silver.
remove unexposed silver halide.
remove unexposed silver halide.
High temperature carbonisation of coal takes place at __________ °C.
2000
700
1100
< 500
1100
White phosphorous is stored under water, because
it does not react with water.
it is poisonous.
its kindling temperature in dry air is very low.
it is unstable.
its kindling temperature in dry air is very low.
__________ is not a constituent of gun powder.
Carbon
Charcoal
Sulphur
Potassium nitrate
Carbon
Hydrophilic group of a soap or detergent solution is
water hating
soil loving
water loving
none of these
water loving
Rotary kiln is not involved in the production of
cement
lime from limestone
slaked lime from quick lime
none of these
slaked lime from quick lime
Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C.
25
60-70
150-200
250-300
60-70
Vanillin is a type of
anti-pyretic drug
food preservative
flavour
dye
flavour
Temporary hardness of water can be removed by
addition of alum (a coagulant).
boiling.
filtration (through gravity sand filter).
addition of lime.
boiling.
More than 100 percent of __________ is present in oleum.
SO3
H2SO4
H2SO3
SO2
H2SO4
Pure rectified spirit contains about __________ percent alcohol.
45
70
95
99.5
95
Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about __________ °C.
-83
-183
-196
-218
-183
Titanium dioxide is a/an __________ colour pigment.
white
black
yellow
blue
white
Mercury cells for caustic soda manufacture, compared to diaphragm cells
require lower initial investment.
require more power.
produce lower concentration NaOH.
none of these.
none of these.
Cellulose percentage in bamboo fibre is about
10
20
50
85
50
Essential oils are usually obtained using
steam distillation
extractive distillation
solvent extraction
leaching
steam distillation
Impurities present in brine is normally removed by treatment with
NH3 and CO2.
lime and soda ash.
lime, ammonia and carbon.
all (a), (b) and (c).
all (a), (b) and (c).
Hydrogenation of oil/fat does not
improve its resistance to rancid oxidation.
raise its melting point.
remove double bonds.
none of these.
none of these.
Solvay process as compared to dual process (i.e. modified Solvay process)
can use low grade brine.
has less corrosion problems.
involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl.
both (b) and (c).
both (b) and (c).
Builders are added in soap to act as
cleaning power booster
anti-redeposition agent
corrosion inhibitor
fabric brightener
cleaning power booster
H2S is scrubbed from refinery gases by absorption using
dilute H2SO4
ethanol amine
chilled water
tri-butyl phosphate
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 Na+ ions
Oxidation of Cl- ions
Reduction of Na+ ions
Reduction of Cl- ions
Oxidation of Cl- ions
Zeolite is a/an
naturally occuring clay which is capable of exchanging cations.
abrasive material.
catalyst used in shift conversion.
none of these.
naturally occuring clay which is capable of exchanging cations.
Type of glass used in optical work is the __________ glass.
soda-lime
fibre
lead
borosilicate
lead
Pick out the wrong statement pertaining to the soap manufacture.
Transparent soaps are made by cold process.
Organic pigments are used as colouring materials in the soap manufacture.
Both laundary as well as toilet soaps are manufactured by hot process.
Colourless rosin is used in the manufacture of laundary soaps.
Transparent soaps are made by cold process.
Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material?
Slag cement
Glasses
Porcelain/Potteries
Teflon
Teflon
Glass is
mainly CaO
subjected to galvanising
a super cooled liquid
all (a), (b) and (c)
a super cooled liquid
Analgesic drugs are
pain relievers
antibiotics
used in the treatment of T.B.
used in the treatment of typhiod
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.
-53
-103
-183
-196
-183
Commonly used glass is known as the __________ glass.
flint
hard
pyrex
soda
soda
Fusion of limestone and __________ produces high alumina cement.
sand
bauxite
quicklime
calcite
bauxite
Massacuits is a terminology used in the __________ industry.
paint
oil hydrogenation
soap
sugar
sugar
The basic constituent of vegetable oils is
triglyceride
fatty acids
fatty alcohol
mono esters
triglyceride
The most economical pulp for the production of newsprint would be the __________ pulp.
groundwood
sulphate
sulphite
semichemical
groundwood
Which of the following is the second major component of cement?
Al2O3
SiO2
CaO
Fe2O3
SiO2
Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it
has larger production capacity per unit cell.
consumes less power per ton of Cl2 produced.
produces high purity (70%) caustic soda directly.
all (a), (b) and (c).
all (a), (b) and (c).
__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.
Phosphates
Chromates
Sulphates
Bi-carbonates
Chromates
L.D. converter is used in the production of
pig iron
steel
copper
zinc
steel
The terminology ‘BTX’ used in coal tar distillation industry refers to
benzol-toluol-xylol.
benzol-toluene-xylene.
benzene-toluol-xylol.
benzene-toluene-xylene.
benzene-toluene-xylene.
Which of the following is not responsible for causing permanent hardness of water?
Ca(HCO3)2
CaCl2
MgCl2
none of these
Ca(HCO3)2
In the Solvay process, the product from the calciner is
light soda ash
dense soda ash
sodium bicarbonate
dehydrated soda ash
light soda ash
Commercially ethylene is produced from naphtha by
catalytic cracking.
catalytic dehydrogenation.
pyrolysis.
hydrocracking.
hydrocracking.
Poly Vinyl Chloride (P.V.C.) is a __________ material.
thermosetting
thermoplastic
fibrous
chemically active
thermoplastic
Pig iron is produced by blast furnaces in India using mostly the iron ore named
hematite
magnetite
siderite
chalcopyrite
hematite
The difference between saponification value and acid value is
called ester value.
always negative.
constant for all fatty oils.
none of these.
called ester value.
Fourdrinier machine is used in the manufacture of
nylon-6
paper
antibiotics
sugar
paper
Pencillin is made employing __________ fermentation process.
continuous
aerobic batch
anaerobic batch
none of these
aerobic batch
Sulphuric acid saturated with SO3 is called
concentrated H2SO4.
sulphurous acid.
oleum.
none of these.
oleum.
Nylon 66 is so named because the
average degree of polymerisation of the polymer is 1966.
number of carbon atoms between two nitrogen atoms are 6.
number of nitrogen atoms between two carbon atoms are 6
polymer was first synthesised in 1966.
average degree of polymerisation of the polymer is 1966.
Wet chlorine gas produced during electrolysis of brine is dehydrated by
spraying 66° Be H2SO4 counter current to the flow of the gas.
passing it through a bed of diatomaceous earth.
passing it through a bed of silica gel.
none of these.
spraying 66° Be H2SO4 counter current to the flow of the gas.
CaSO4⋅H2O is known as
blue vitriol
plaster of Paris
gypsum
zeolite
plaster of Paris
__________ of quicklime produces slaked lime.
Hydration
Dehydration
Hydrogenation
none of these
Hydration
Main product in calcium carbide-water reaction is
Ca(OH)2
C2H2
CO2
CaCO3
C2H2
Glauber’s salt is chemically
calcium sulphate
potassium sulphate
potassium chlorate
none of these
none of these
Which of the following fuel gases contains maximum amount of carbon monoxide?
Coke oven gas
Water gas
Blast furnace gas
L.D. converter gas
L.D. converter gas
Baking soda is chemically represented by
Na2CO3
NaHCO3
Na2CO3.H2O
Na2CO3.10H2O
NaHCO3
P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as
bakelite
neoprene
teflon
nylon-66
teflon
Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo?
Depithing
Digestion
Bleaching
None of these
Depithing
Percentage of glycerene present in the spent lye obtained during soap manufacture is about
0.5
5
20
35
5
Concentration of NaOH solution produced by diaphragm electrolytic cell is about __________ percent.
10
25
50
98
10
Commercial production of Vanaspati is done by __________ of edible vegetable oils.
hydrogenation
oxidation
hydrolysis
hydrocracking
hydrogenation
Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?
AgO
Al2O3
ZnCl2
Fe2O3
AgO
Phenolic antiseptics are added in the __________ soap.
shaving
medicated
metallic
transparent
medicated
Solvay process is used for the manufacture of
caustic soda
soda ash
caustic potash
soda lime
soda ash
A mixture of chlorine & sodium bromide acts as a/an
insecticides
analgesic drug
fire retardant
hydrogenation catalyst
fire retardant
Which is a high grade pulp?
Rag pulp
Mechanical pulp
Sulphate pulp
Sulphite pulp
Sulphate pulp
Stereospecific agents are exemplified by
radiation
supported metal oxide catalysts
ziegler catalysts
all (a), (b) & (c)
all (a), (b) & (c)
Starting material for the production of butadiene in India is
naphthalene
benzol
ethyl alcohol
phthalic anhydride
ethyl alcohol
Yellow phosphorus is transported under
air
water
nitrogen
helium
water
Permanent hardness of water can be removed by
simply boiling.
adding alum.
passing it through cation & anion exchangers.
all (a), (b) and (c).
passing it through cation & anion exchangers.
Celluloid is chemically
cellulose acetate
regenerated cellulose
cellulose nitrate
cellulose acetate butyrate
cellulose nitrate
Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of
nitric acid
sulphuric acid
ammonium sulphate
hydrochloric acid
sulphuric acid
Which of the following is an explosive?
Nitroglycerene
Trintrotoluene (TNT)
Cellulose nitrate
All (a), (b), and (c)
All (a), (b), and (c)
Zeolite is used in the
water treatment.
glass manufacture.
hydrogenation of fatty oil as a catalyst.
development of exposed photographic plate.
water treatment.
Thermoplastic materials
do not soften on application of heat.
are heavily branched molecules.
are solvent insoluble.
none of these.
none of these.
Carbon tetrachloride (CCl4) is the starting raw material for the manufacture of
trichloroethylene
perchloroethylene
parathion
methanol
perchloroethylene
Salt is added in the kettle during soap manufacture to separate
soap from lye.
glycerine from lye.
the metallic soap.
the unsaponified fat from soap.
soap from lye.
Manufacture of phthalic anhydride uses __________ as a catalyst.
Ni
Cr
V2O5
Al2O3
V2O5
Which of the following is not a product of coal tar distillation?
Anthracene
Cresote oil
Carbolic oil
None of these
None of these
Teflon is
phenol formaldehyde.
an inorganic polymer.
poly tetrafluoroethylene (P.T.F.E.).
a monomer.
poly tetrafluoroethylene (P.T.F.E.).
Chrome tanning and vegetable tanning are done for
light & heavy leather respectively.
heavy & light leather respectively.
both light & heavy leather.
neither light nor heavy leather.
light & heavy leather respectively.
Catalyst used during the manufacture of ‘Vanaspati Ghee’ is
zinc
nickel
platinum
copper
nickel
Iron ore hametite is concentrated using
electromagnetic separation mainly.
gravity separation.
froth floatation.
roasting.
gravity separation.
Refractory bricks burnt at very high temperature have got
greater resistance to corrosion by slags.
less resistance to corrosion by slags.
high spalling tendency.
none of these.
greater resistance to corrosion by slags.
Nitrile rubber is produced by the polymerisation of
acrylonitrile and butadiene.
acrylonitrile and styrene.
isobutylene and isoprene.
none of these.
acrylonitrile and butadiene.
Carbon disulphide is mainly used in the production of
viscose rayon.
corundum.
plasticiser for unsaturated polyester.
paints.
viscose rayon.
99.5% purity oxygen is used in
cutting and welding by oxy-acetylene flame.
hospitals for medicinal purposes.
gas masks and artificial breathing apparatus.
all (a), (b), and (c).
all (a), (b), and (c).
Nylon-6 is manufactured from
caprolactum.
hexamethylene diamine and adipic acid.
hexamethylene diamine and maleic anhydride.
hexamethylene diamine and sebacic acid.
caprolactum.
Permanent hardness of water can be removed by
boiling.
adding Ca(OH)2.
boiling it with Na2CO3.
none of these.
boiling it with Na2CO3.
Sizing material is incorporated in paper to
impart resistance to penetration by liquids.
increase its thickness.
increase its flexibility & opacity.
increase its brightness.
impart resistance to penetration by liquids.
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.
Oils and fats are alkaloids.
Which of the following, when pyrolysed, produces perchloro-ethylene?
Ethylene dichloride
Chlorobenzene
Carbon tetrachloride
Chlorinated paraffin
Carbon tetrachloride
Chemical name of aspirin (an analgesic drug) is
acetylsalicylic acid
nictonic acid
calcium acetate
methyl salicylate
acetylsalicylic acid
Which is the most efficient absorbant for SO3 out of the following?
20% oleum
65% oleum
78%H2SO4
98%H2SO4
98%H2SO4
Coal tar is used as a
binding material for coal briquettes.
fuel in rotary kiln.
binder in making carbon electrodes.
all (a), (b) and (c).
all (a), (b) and (c).
Caprolactum (a raw material for nylon-6 manufacture) is produced from
phenol
naphthalene
benzene
pyridine
benzene
The purpose of adding Na2CO3 to water of low alkalinity is to
permit the use of alum as a coagulant.
increase the softening capacity of zeolite.
facilitate easy regeneration of zeolite.
all (a), (b) and (c).
permit the use of alum as a coagulant.
Ca(OH)2 is called
quicklime
slaked lime
limestone
gypsum
slaked lime
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
0.1 to 0.5
Potassium is kept & transported under
water
liquid ammonia
kerosene oil
alcohol
kerosene oil
The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by
electrolysis
electrolytic reduction
electrolytic oxidation
none of these
electrolytic reduction
Bakelite is chemically known as
polyvinyl chloride (PVC)
polybutadiene
phenol formaldehyde
polyurathane
phenol formaldehyde
Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine?
Na2CO3
NaHCO3
H2
none of these
H2
Phthalic anhydride is made by the
oxidation of naphthalene.
oxidation of benzene.
dehydrogenation of ethyl benzene.
none of these.
oxidation of naphthalene.
RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically
cyclo trimethylene trinitramine.
trinitro resorcinol.
cyclo tetramethylene tetranitramine.
trinitro benzene.
cyclo trimethylene trinitramine.
Raw material used in alcohol distilleries in India is
molasses
benzol
methylated spirit
none of these
molasses
Oil produced by solvent extraction
has low free fatty acid content.
is odourless.
both (a) &(b).
neither (a) nor (b).
neither (a) nor (b).
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.
storage under improper conditions.
Yeast is used in the manufacture of
pencillin
antibiotics
wine
pasteurised milk
wine
Liquefaction of gases can not be done by
exchange of heat with colder stream.
adiabatic expansion through a throttle valve (Joule-Thomson expansion).
merely compressing it beyond critical pressure.
adiabatic expansion against a piston or in a turbine.
merely compressing it beyond critical pressure.
Anion exchanger is regenerated usually with
NaOH
H2SO4
hydrazine
alum solution
NaOH
__________ is the major constituent of the Portland cement.
Calcium carbonate
Calcium oxide
Tricalcium silicate
Calcium sulphate
Tricalcium silicate
Catalytic oxidation of naphthalene produces
styrene
phenol
phthalic anhydride
none of these
phthalic anhydride
Parathion and Malathion are
pesticides.
plasticisers for unsaturated polysters.
pain-relieving drugs (analgesic).
tranquilisers.
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.
metallic soaps with frothing agent and free stearic acid to achieve transparency.
metallic soaps with frothing agent from which glycerine has not been recovered.
none of these.
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
naphthalene
phenol
benzoic acid
styrene
Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces
nylon-6
dacron
polyester
PVC
dacron
Lindane is
not a fumigant.
BHC (Benzene Hexa Chloride) containing 99% γ-isomer.
a by-product of BHC manufacture.
both(b) and (c).
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 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).
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 silicate
Sodium borate
Sodium tripolyphosphate (STPP)
Caustic soda
Sodium borate
In the production of soda ash by Solvay process, the by-product is
CaCl2
NH4Cl
NH3
NaOH
CaCl2
The ideal pulp for the manufacture of paper should have high __________ content.
cellulose
lignin
both (a) & (b)
none of these
cellulose
At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the concentration of reactants.
independent of
directly proportional to
inversely proportional to
proportional to the square of
independent of
Which of the following is a constituent of vinegar?
Around 10% alcohol
Around 1% acetic acid
Both (a) and (b)
Neither (a) nor (b
Both (a) and (b)
During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as
it is very corrosive at elevated temperature.
its viscosity is not reduced on further heating (hence pressure drop on pumping it, cannot be further reduced).
it decomposes on further increasing the temperature.
none of these.
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 (H2 + N2).
is a moving bed reactor.
cannot use coking coal.
operate at very high pressure
can give ammonia synthesis gas (H2 + N2).
Addition of calcium oxide to water produces
exothermic heat
hissing sound
slaked lime
all (a), (b) & (c)
all (a), (b) & (c)
Sodium bisulphite is used for __________ water.
deaeration
dechlorination
both (a) & (b)
neither (a) nor(b)
both (a) & (b)
Riboflavin is a/an
vitamin
analgesic drug
anaesthetics
anti-malarial drug
vitamin
Flash point of most vegetable oils is about __________ °C.
50
100
200
300
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).
inhibits its corrosive effects.
does not allow redeposition of dirt on the cleaned surface.
none of these.
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
Na2CO3
Na2CO3⋅10H2O
Na2CO3⋅H2O
Na2HCO3
Na2CO3⋅H2O
Reverse osmosis is normally used for the
separation of isotopes of uranium from gaseous uranium hexaflouride.
separation of helium from natural gas.
desalination of brackish water to produce potable (drinking) water.
purification of oxygen.
desalination of brackish water to produce potable (drinking) water.
Hydrazine is largely used
as a starting material for ‘hypo’.
in photographic industry.
as rocket fuel.
in printing industry.
as rocket fuel.
‘Synthesis gas’ meant for the synthesis of organic compound is a variable mixture of
N2 & H2
CO2 & H2
CO & H2
C & H2
CO & H2
Litharge is
lead oxide
zinc oxide
zinc sulphide
cellulosic photographic material
lead oxide
Coagulant is used __________ filtration.
before
after
during
to avoid
before
10% oleum comprises of 10% free
SO2
H2SO3
SO3
H2SO4
SO3
Use of chlorine in the treatment of sewage
helps in grease separation.
increases the biological oxygen demand(BOD).
causes bulking of activated sludge.
aids in flocculation.
helps in grease separation.
Removal of dirt/soil by soaps or detergent does not involve the __________ of soil.
emulsification
dispersion
precipitation
wetting
precipitation
