Indiabix - CPI Flashcards
Oxidation of SO2 to SO3 is favoured 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, which is an explosive comprises of charcoal,
sulphur and
A. glycerene
B. salt petre
C. nitro glycerene
D. dynamite
B. salt petre
Starting raw material for the manufacture of alum is
A. alumina
B. gypsum
C. bauxite
D. ammonium bicarbonate
C. bauxite
Salt cake is chemically represented by
A. Na2SO4
B. CaSO4.H2O
C. MgSO4
D. BaSO4
A. Na2SO4
Which of the following sugars is the sweetest?
A. Glucose
B. Fructose
C. Sucrose
D. Lactose
B. Fructose
Paper pulp produced by kraft/sulphate 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.
The main use of HCl is in the
A. drilling of petroleum wells and pickling of steel sheets.
B. manufacture of cationic detergent.
C. treatment of spent fuel of nuclear reactor.
D. none of these.
A. drilling of petroleum wells and pickling of steel sheets.
The gasification reaction represented by, C + H2O = CO + H2, is a/an __________ reaction.
A. exothermic
B. endothermic
C. catalytic
D. autocatalytic
B. endothermic
Viscose rayon is chemically
A. cellulose nitrate
B. regenerated cellulose nitrate
C. cellulose acetate
D. regenerated cellulose acetate
D. regenerated cellulose acetate
All enzymes are made of
A. fats
B. carbohydrates
C. proteins
D. amino acids
C. proteins
The combustion reaction, C + O2 = CO2, is
A. exothermic
B. endothermic
C. autocatalytic
D. none of these
A. exothermic
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. collagen
B. tannin
C. molasses
D. carbohydrate
A. collagen
The chamber process is
A. preferred over contact process for producing 98 to 100% H2SO4 and various oleums.
B. non-catalytic and operates only on pyrites.
C. a batch process for directly producing high
strength (98 to 100%) H2SO4.
D. none of these.
D. none of these.
Sucrose content in the raw juice extracted from sugar cane is about __________ percent.
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)
Co-efficient 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
Hemoglobin is a/an
A. amino acid
B. biological catalyst
C. protein
D. enzyme
C. protein
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.
Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.
A. 10
B. 25
C. 50
D. 98
C. 50
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. detergent
B. vanaspati
C. soap
D. mercaptans
C. soap
Wood charcoal is used for decolouration of sugar,
because it __________ the coloured materials.
A. adsorbs
B. oxidises
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
Hard water
A. does not affect the lather formation by soap.
B. is not unfit for drinking purpose.
C. pollutes the water stream.
D. all (a), (b) and (c).
B. is not unfit for drinking purpose.
Which of the following is an organo-metal-lic compound ?
A. Isopropyl alcohol
B. Tetra-ethyl lead
C. Zeolite
D. Cumene
B. Tetra-ethyl lead
Sulphur 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 (a), (b) and (c)
D. 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
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 (a), (b) and (c).
D. all (a), (b) and (c).
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
Esterification reaction
A. produces soap.
B. is reversible.
C. is a reaction between an alcohol and an organic
acid.
D. all (a), (b) and (c).
D. all (a), (b) and (c).
In sulphate pulp manufacture, the pressure and
temperature in the digestor is
A. 10 atm., 800 °C
B. 10 atm., 170-180°C
C. 1 atm., 170 - 180°C
D. l atm., 800°C
B. 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
A. calcium sulphate
B. sodium chloride
C. sodium sulphate
D. magnesium chloride.
B. sodium chloride
Pick out the endothermic reaction out of the following.
A. C+O2 = CO
B. CO + 3H2 = CH4 + H2O
C. CaCO3 = CaO + CO2
D. CO +O2 = CO2
C. CaCO3 = CaO + CO2
Pasteurisation 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 sulphur
D. making nitrogen
C. mining sulphur
Very fine suspended and colloidal impurities are removed from water by a process called
A. sedimentation
B. coagulation
C. disinfection
D. softening
B. coagulation
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 neutralises the residual acids present in pitch.
C. it reduces viscosity and imparts fluidity for its
transportation through pipelines at economic
pressure drop.
D. all (a), (b) and (c).
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
Raw materials used for producing __________ cement does not contain iron oxide.
A. waterproof
B. slag
C. white
D. pozzolan
C. white
The drug used in contraceptives is
A. sulphadizene
B. mestranol
C. methyl salicylate
D. pencillin
B. mestranol
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.
Calgon used in water treatment is chemically
A. sodium phosphate
B. sodium hexametaphosphate
C. calcium phosphate
D. tricresyl phosphate
B. sodium hexametaphosphate
Which oil is preferred for paint manufacture?
A. Drying oil
B. Non-drying oil
C. Semi-drying oil
D. Saturated oil
A. Drying oil
Styrene butadiene rubber (SBR) is
A. a natural rubber.
B. a synthetic polymer.
C. a synthetic monomer.
D. another name of silicone rubber.
B. a synthetic polymer.
Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at
A. 1 atm & 100°C
B. 5 atm & 275°C
C. 100 atm & 500°C
D. 50 atm & 1000°C
B. 5 atm & 275°C
Glycerine is not used in the
A. manufacture of explosive.
B. conditioning and humidification of tobacco.
C. manufacture of pharmaceuticals.
D. none of these.
D. none of these.
Cumene is the starting material for the production of
A. benzoic acid
B. phenol and acetone
C. isoprene
D. styrene
B. phenol and acetone
The type of high refractive index glass used in optical instruments is __________ glass.
A. pyrex
B. flint
C. crookes
D. none of these
B. flint
Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.
A. nickel
B. vanadium
C. alumina
D. iron
B. vanadium
Most commonly used rubber vulcanising agent is
A. sulphur
B. bromine
C. platinum
D. alumina
A. sulphur
Terylene is
A. same as dacron
B. a polyester
C. both (a) & (b)
D. neither (a) nor(b)
C. both (a) & (b)
Free alkali in a toilet soap is __________ that in a
laundary shop.
A. less than
B. more than
C. same
D. none of these
A. less than
Dehydrogenation of isopropanol produces
A. propyl alcohol
B. acetone
C. trichloroethylene
D. formaldehyde
B. acetone
Pick out the wrong statement.
A. Eosin requirement in tallow soap is about 40-50% which fastens the lather formation, softens the hard soaps and increases its cleansing action.
B. Soap powder is prepared by mixing soap with
hydrated sodium carbonate.
C. Detergents differ from soaps in their action in hard water.
D. Tarnish inhibitor (e.g., benzotriazole) is added
in soap to facilitate the removal of stains due
to tea, blood etc.
D. 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
A. crystallisation
B. vacuum crystallisation
C. atmospheric distillation
D. dehydration
B. vacuum crystallisation
Helium is produced on commercial scale from
A. air
B. natural gas
C. coke oven gas
B. natural gas
Fermentation of molasses to produce ethyl alcohol is done at __________ °C
A. 20 - 30
B. < - 5
C. 100 - 150
D. 250 - 300
A. 20 - 30
The catalyst used in the manufacture of DDT is
A. alumina.
B. silica.
C. 20% oleum.
D. aluminium chloride
C. 20% oleum.
Most widely and commonly used coagulant for the removal of suspended impurities in water is
A. bleaching powder
B. slaked lime
C. alum
D. copper sulphate
C. alum
__________ is used as a catalyst in fat splitting.
A. ZnO
B. Ni
C. V2O5
D. FeO
A. ZnO
Which of the following is not produced on commercial scale from sea water?
A. Bromine.
B. Magnesium compounds.
C. Potassium compounds.
D. Sodium sulphate.
D. Sodium sulphate.
Heating of __________ to 120°C, produces plaster of
paris.
A. blue vitriol
B. gypsum
C. calcium silicate
D. calcium sulphate
B. gypsum
Pick out the wrong statement.
A. Conversion of SO2 to SO3 in Monsanto-4 pass
converter is about 98%.
B. The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with sulphur trioxide.
C. Vitriol oil is nothing but technical sulphuric acid.
D. Decomposition of sulphuric acid on heating
does not start before its boiling.
D. Decomposition of sulphuric acid on heating
does not start before its boiling.
Which of the following has sodium bicarbonate as its main constituent?
A. Baking soda
B. Baking powder
C. Washing soda
D. none of these
B. Baking powder
Ordinary glass is not a/an
A. amorphous isotropic material.
B. supercooled liquid.
C. material with sharp definite melting point.
D. electrical insulator
C. material with sharp definite melting point.
In premitive days, __________ was being manufactured by Leblanc Process.
A. alum
B. washing soda
C. soda ash
D. calcium carbide
C. soda ash
The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at
A. SASOL (in South Africa).
B. Redcar (U.K.).
C. Los-Angles (U.S.A.).
D. Trombay (India).
A. SASOL (in South Africa).
Lurgi coal gasifier is a pressurised __________ bed
reactor.
A. moving
B. fixed
C. fluidised
D. entrained
A. 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.
C. always contain some amount of nickel (as their
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.
A. 5
B. 20
C. 40
D. 60
A. 5
Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
A. surfactant
B. builder
C. optical brightening agent
D. anti soil redeposition agent
D. anti soil redeposition agent
Vulcanisation of rubber
A. decreases its tensile strength.
B. increases its ozone & oxygen reactivity.
C. increases its oil & solvent resistance.
D. converts its plasticity into elasticity.
D. converts its plasticity into elasticity.
Raw materials for ‘Solvay Process’ for manufacture of the soda ash are
A. salt, limestone and coke or gas.
B. ammonia, salt and limestone.
C. ammonia limestone and coke.
D. none of these.
A. salt, limestone and coke or gas.
Chloral is used in the manufacture of
A. DDT
B. BHC
C. parathion
D. none of these
A. DDT
Bromine is used in the preparation of
A. fire extinguishing compounds.
B. fire proofing agents.
C. dyes and antiknock compounds.
D. all (a), (b) and (c).
D. all (a), (b) and (c).
Sudden temperature fluctuation does not affect pyrex glass, because of its
A. low co-efficient of expansion.
B. high co-efficient of expansion.
C. high melting point.
D. both (b) and (c).
A. low co-efficient of expansion.
The process used for the manufacture of ethyl alcohol from molasses is
A. distillation
B. dehydration
C. dehydrogenation
D. none of these
D. none of these
Absorption of SO3 in 97% H2SO4 is
A. exothermic
B. endothermic
C. not possible
D. none of these
A. exothermic
__________ process is used for the commercial
production of nitric acid by the catalytic oxidation of ammonia.
A. Solvay
B. Ostwald’s
C. Haber’s
D. none of these
B. Ostwald’s
Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the
A. fertiliser manufacture
B. car battery solution
C. synthesis of oleum
D. water treatment
B. car battery solution
The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is
A. alumina
B. silica gel
C. platinum
D. nickel
A. alumina
A good quality coal should have
A. low fusion point of ash
B. high ash content
C. high sulphur content
D. none of these
D. none of these
Zeolite used in water softening process (cation exchange) is regenerated by washing with
A. brine
B. chloramines
C. sodium bisulphite
D. liquid chlorines
A. brine
The catalyst used in shift converter is
A. nickel
B. vanadium
C. silica gel
D. alumina
A. nickel
Which of the following is a detergent?
A. Benzene hexachloride
B. Alkyl benzene sulphonate
C. Polytetraflouroethylene
D. Cellulose nitrate
B. Alkyl benzene sulphonate
Drinking (potable) water treatment does not involve
A. coagulation
B. sedimentation
C. softening
D. disinfection
C. softening
Phenol formaldehyde resin is used as an adhesive in making
A. laminates
B. card boxes
C. furniture
D. books
A. laminates
Pick out the correct statement.
A. A fat is converted into oil by its hydrogenation.
B. There is no difference between a fat and an oil so far as its physical properties are concerned.
C. All vegetable oils except coconut oil, contains
fatty acids having more than sixteen carbon
atoms.
D. Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content.
C. 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
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.
Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively
A. V2O5 & Cr2O3.
B. oxides of nitrogen & Cr2O3.
C. V2O5 on a porous carrier & oxides of nitrogen.
D. oxides of nitrogen & V2O5 on a porous carrier.
D. oxides of nitrogen & V2O5 on a porous carrier.
DDT stands for
A. diethyl-diphenyl-trichloromethane.
B. dichloro-diphenyl-trichloromethane.
C. diphenyl-dichloro-trichloromethane.
D. dichloro-diphenyl-trichloroethane.
D. dichloro-diphenyl-trichloroethane.
Phosphoric acid is prepared from
A. cryolite
B. chalcopyrite
C. rock phosphate
D. none of these
C. rock phosphate
Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used
A. as a lubricant.
B. as a rust preventive.
C. in hard water for cleaning of cloth.
D. as a foam depressant in distillation column.
A. as a lubricant.
Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda?
A. Diaphragm electrolytic cell process
B. Mercury electrolytic cell process
C. Lime-soda process
D. None of these
C. Lime-soda process
Bleaching action of bleaching powder is due to its
__________ properties.
A. reducing
B. oxidising
C. disinfecting
D. none of these
B. oxidising
Solvent extracted oil
A. has low free fatty acid content.
B. is odourless.
C. has more of unsaturates.
D. none of these.
D. none of these.
Which of the following is not required in the manufacture of soda ash by Solvay process ?
A. Ammonia
B. Limestone
C. Nitric acid
D. None of these
C. Nitric acid
Saponification number of an oil or fat
A. gives an idea about its molecular weight.
B. is inversely proportional to its molecular weight.
C. detects its adulteration.
D. all (a), (b) & (c)
D. all (a), (b) & (c)
The purpose of tanning in leather industry is to
A. stiffen the leather.
B. smoothen the leather.
C. make it flexible.
D. impart water resistance.
A. 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
A. refractory material
B. synthetic resin
C. artificial abrasive
D. blue pigment
A. refractory material
Hydrogenation of edible vegetable oils
A. is an exothermic reaction.
B. increases their melting point.
C. is done in presence of nickel catalyst.
D. all (a), (b) and (c).
D. all (a), (b) and (c).
Phenol is mainly used
A. to produce benzene.
B. to produce phenol formaldehyde.
C. to produce polyester resin.
D. as a plasticiser for unsaturated polyster.
B. to produce phenol formaldehyde.
Main constituent of dolomite is
A. CaCO3
B. MgCO3
C. K2CO3
D. Na2CO3
B. MgCO3
Conversion of CO to CO2 by steam in presence of a catalyst is called
A. steam reforming.
B. shift conversion.
C. steam gasification.
D. none of these.
B. shift conversion.
Refractory bricks having high thermal conductivity is desirable, when it is to be used in the
A. L.D. converter
B. blast furnace
C. rotary kiln
D. recuperator
D. recuperator
Bromides contained in hot mother liquor is treated with __________ during manufacture of bromine from sea water.
A. SO3
B. Cl2
C. NH3
D. SO2
B. Cl2
Plasticisers are added to paints to
A. make it corrosion resistant.
B. make glossy surface.
C. give elasticity & prevent cracking of the film.
D. increase atmospheric oxidation.
C. give elasticity & prevent cracking of the film.
Resistance to fusion of the refractory under a steady rising temperature condition is called
A. spalling
B. refractoriness
C. both (a) & (b)
D. neither (a) nor (b)
B. refractoriness
Portland cement consists mainly of
A. CaO & SiO2
B. SiO2 & Al2O3
C. CaO & Al2O3
D. CaO & Fe2O3
A. CaO & SiO2
__________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.
A. Pyrex
B. Soda lime
C. Lead
D. High silica
A. Pyrex
The amount of benzene present in pure benzol is about __________ percent.
A. 30
B. 50
C. 70
D. 90
C. 70
Cumene (isopropyl benzene) is made by
A. oxidation of napthalene.
B. propylene alkylation of benzene.
C. polymerisation of a mixture of benzene &
propylene.
D. none of these.
B. propylene alkylation of benzene.
Which of the following is not a pyrite ore?
A. Celestite
B. Galena
C. Gypsum
D. Siderite
D. Siderite
Mannheim furnace is used in the manufacture of
A. hydrochloric acid.
B. H2SO4 by Chamber process.
C. calcium carbide.
D. corundum.
A. hydrochloric acid.
Thermosetting materials
A. are cross-linked molecules.
B. soften on application of heat.
C. are solvent soluble.
D. none of these.
A. 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
A. Fischer-Tropsch process.
B. shift conversion.
C. hydrogenation of oil.
D. Ostwald’s process of HNO3 manufacture.
D. Ostwald’s process of HNO3 manufacture.
__________ iron is the purest form of iron.
A. Cast
B. Wrought
C. Pig
D. High silicon
B. Wrought
Enamels
A. give good glossy finish.
B. are same as varnish.
C. are prepared from non-drying oil.
D. do not contain pigment.
A. 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
A. thinner
B. pigment
C. both (a) & (b)
D. neither (a) nor (b)
B. pigment
Alcohol is produced by the
A. oxidation of an aldehyde
B. hydrolysis of an ether
C. esterification of a fat
D. none of these
B. hydrolysis of an ether
Varnish does not contain
A. pigment
B. thinner
C. dryer
D. anti-skimming agent
A. pigment
Polymerisation product of C2F4 (carbon tetraflouride) is called P.T.F.E (poly chloro tetra flouro ethylene). It is also called
A. polyurethane
B. silicone
C. teflon
D. epoxy resin
C. teflon
Solvent used for extraction of oil is
A. hexane
B. methyl ethyl ketone
C. furfurol
D. none of these
A. hexane
Insulin is an __________ drug.
A. anti-malarial
B. anti-TB
C. antibiotic
D. none of these
C. antibiotic
Liquor poisoning generally occurs due to the presence of __________ in it.
A. ethyl alcohol
B. impurities
C. methyl alcohol
D. carbonic acid
C. methyl alcohol
Neoprene is chemically known as
A. polybutadiene
B. styrene butadiene rubber (SBR)
C. polyurathane
D. polychloroprene
D. 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
A. 10^2 - 10^2
B. 10^5 - 10^9
C. 10^2 - 10^7
D. 10^9 - 10^11
C. 10^2 - 10^7
Sulphur removal by heating of pyrite ore in presence of air is called its
A. reduction
B. roasting
C. calcination
D. smelting
B. roasting
Deacon’s method is used for the manufacture of
A. glauber’s salt
B. common salt
C. chlorine
D. graphite electrode
C. 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 coagulent prior to sedimentation.
D. 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.
A. lead
B. borosilicate
C. soda lime
D. alkali silicate
B. borosilicate
Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of
A. nitric acid
B. hydrochloric acid
C. methyl alcohol
D. formic acid
A. nitric acid
The most stable allotropic form of phosphorous is the __________ phosphorous.
A. white
B. black
C. yellow
D. red
B. black
Function of thinner in a paint is to
A. accelerate the oxidation of oil.
B. prevent gelling of the paint.
C. suspend pigments & dissolve film forming
materials.
D. form a protective film.
C. suspend pigments & dissolve film forming
materials.
Starting material for the production of styrene butadiene rubber (SBR) is
A. ethyl alcohol
B. ethylene
C. both (a) & (b)
D. neither (a) nor (b)
C. both (a) & (b)
Which one of the following is not an elastomer?
A. Polyisoperene
B. Neoprene
C. Nitrile-butadiene
D. None of these
D. None of these
Which of the following processes can remove both
temporary as well as permanent hardness of water?
A. Filtration
B. Boiling
C. Distillation
D. None of these
C. 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
A. decoloration
B. hydrogenation
C. oxidation
D. purification
B. hydrogenation
Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like
A. high cost
B. fragile nature
C. easy poisoning tendency
D. all (a), (b) and (c)
D. all (a), (b) and (c)
__________ of rubber decreases after its vulcanisation.
A. Resistance to the action of organic solvent
B. Tackiness
C. Maximum service temperature
D. Tensile strength
B. Tackiness
Boiling of water containing temporary hardness produces
A. CO2
B. CaSO4
C. CaHCO3
D. none of these
A. CO2
Phenol formaldehyde
A. employs addition polymerisation.
B. employs condensation polymerisation.
C. is a monomer.
D. is an abrasive material.
B. employs condensation polymerisation.
Which of the following is not an insecticide?
A. Hydrocyanic acid
B. Nicotine
C. Sodium flouride
D. Hexane
D. Hexane
Shrinkage volume in cement setting does not depend upon the
A. sand to cement ratio.
B. water to cement ratio.
C. ambient temperature fluctuation.
D. drying period.
A. sand to cement ratio.
Bisphenol A is produced by the condensation of acetone with
A. formaldehyde
B. ethyl alcohol
C. diethyl ether
D. phenol
D. phenol
In Kraft process of paper manufacture, white cooking liquor consists of caustic soda
A. sodium sulphide & sodium carbonate.
B. sodium sulphite & sodium carbonate.
C. sodium sulphite & sodium sulphide.
D. none of these.
A. sodium sulphide & sodium carbonate.
Presence of carbonaceous matter in the sewage
A. causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures.
B. reduces sulphate ions to sulphides causing
obnoxious smell.
C. increases the quantity of chlorine used for its
purification.
D. all (a), (b) and (c).
D. all (a), (b) and (c).
A mineral is termed as ‘ore’, if
A. a metal can be economically extracted from it.
B. it contains ≥ 40% metal.
C. the metal present in it is costly.
D. all (a), (b) and (c).
A. a metal can be economically extracted from it.
In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst
A. gives higher conversion efficiency.
B. has a longer life and is not poisoned by arsenic.
C. handles lower SO2 content gas (7 -10% SO2),
thus increasing the capital cost of the plant.
D. all (a), (b) and (c).
D. all (a), (b) and (c).
At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system )
A. P
B. P^1/2
C. P2
D. 1/P
B. P^1/2
Oleum produces fumes of
A. SO2
B. H2SO4
C. SO3
D. SO2 + H2SO4
C. SO3
20% oleum means that in 100 kg oleum, there are 20 kg of
A. SO3 and 80kg of H2SO4.
B. H2SO4 and 80kg of SO3.
C. SO3 for each 100 kg of H2SO4.
D. none of these.
A. SO3 and 80kg of H2SO4.
Chloramines are used in water treatment for
A. disinfection and control of taste & odour.
B. corrosion control.
C. removing turbidity.
D. control of bacteria.
A. disinfection and control of taste & odour.
Glycerine is recovered from lye by
A. evaporation followed by vacuum distillation.
B. liquid extraction technique.
C. extractive distillation technique.
D. none of these.
A. evaporation followed by vacuum distillation.
Inversion of sucrose produces
A. fructose
B. glucose
C. both (a) & (b)
D. neither (a) nor (b)
B. glucose
Enzymes are organic catalysts used in the __________ reactions.
A. chemical
B. biochemical
C. photochemical
D. electrochemical
B. biochemical
Linde process of gas liquefaction employs
A. exchange of heat with colder stream.
B. adiabatic expansion through a throttle valve
(Joule-Thomson expansion).
C. adiabatic expansion against a piston or in a
turbine.
D. merely compressing the gas beyond its critical
pressure.
B. 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.
A. 10
B. 50
C. 80
D. 95
B. 50
Ore concentration by froth floatation utilises the
__________ of ore particles.
A. density difference
B. wetting characteristics
C. terminal velocities
D. none of these
B. wetting characteristics
The main use of activated carbon in water treatment is to control
A. bacterial growth
B. taste and odour
C. turbidity
D. none of these
B. taste and odour
The most commonly used substance to speed up the sedimentation of sewage is
A. lime
B. sulphuric acid
C. chlorine
D. sodium bisulphite
A. lime
Sucrose is a
A. monosacchride
B. disacchride
C. polysacchride
D. none of these
B. disacchride
Sugar content in sugarcane on cane basis is about
__________ percent by weight.
A. 1 to 5
B. 5 to 10
C. 15 to 20
D. 20 to 30
B. 5 to 10
Pick out the wrong statement.
A. Wine, rum & Vodka are prepared by the
formulation of fruit juice, sugar beet & rye
respectively.
B. Protein catalysts are called enzymes.
C. The rate of chemical reaction is independent of
the concentration of reactants at high
concentration of enzymes.
D. Total sugar content in molasses is about 10%.
D. Total sugar content in molasses is about 10%.
The major use of butadiene is
A. as a plasticiser for unsaturated polyester.
B. in the manufacture of synthetic rubber.
C. as an anti-skinning agent in paint.
D. none of these.
B. in the manufacture of synthetic rubber.
The manufacture of Kraft pulp is done by a/an
__________ process.
A. alkaline
B. acidic
C. neutral
D. none of these
A. alkaline
Antibiotic
A. inhibits/destroys the growth of
microorganisms.
B. is used as a pain reliever.
C. is an antimalarial.
D. is an anaesthetic.
A. inhibits/destroys the growth of
microorganisms.
Which of the following paper does not require a filler during manufacture ?
A. Bond paper
B. Writing paper
C. Blotting paper
D. Coloured paper
C. Blotting paper
Industrial production of chloroform requires acetone and
A. phosgene
B. calcium hypochlorite
C. chlorine
D. ammonium chloride
B. calcium hypochlorite
Styrene (a monomer for the production of polystyrene) is commercially produced by
A. catalytic dehydrogenation of ethyl benzene.
B. dehydration of ethyl alcohol followed by
hydrogenation.
C. reacting ethylene oxide with acetal-dehyde.
D. fermentation of starch.
A. catalytic dehydrogenation of ethyl benzene.
Hydrogenation of oil takes place in a/an __________
reactor.
A. autothermal
B. trickle bed
C. plug flow
D. none of these
B. trickle bed
Fatty material used in soap making is
A. fatty acid
B. fatty alcohols
C. tallow
D. detergents
C. tallow
__________ glass is used for the manufacture of optical
glass.
A. Pyrex
B. Soda
C. Flint
D. Crooke’s
C. Flint
Thermosetting plastic materials
A. can be repeatedly melted.
B. is useful for melt casting.
C. can not be melted after forming.
D. is useful for spinning.
C. can not be melted after forming.
Favourable conditions for the liquefaction of gases in general are
A. high pressure & low temperature.
B. low pressure & high temperature.
C. high pressure & high temperature.
D. low pressure & low temperature
A. high pressure & low temperature.
In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed :
A. furnace → converter → absorber
B. furnace → evaporator → absorber
C. furnace → converter → evaporator
D. converter → furnace → absorber
A. furnace → converter → absorber
__________ nature of hypo (sodium thiosulphate) makes it useful in photography.
A. Oxidising
B. Reducing
C. Complex forming
D. Photochemical
C. Complex forming
__________ is an ore of lead.
A. Quartz
B. Galena
C. Siderite
D. Chalcopyrite
B. Galena
Which of the following is an yellow pigment ?
A. Titanium dioxide
B. Ferrous sulphate
C. Lead chromates
D. Zinc sulphides
C. Lead chromates
Catalytic oxidation of toluene produces
A. styrene
B. phenol
C. benzene
D. tri-nitro-toluene
B. phenol
SO2 is bubbled through hot sugar cane juice to
A. act as an acidifying agent.
B. increase its concentration.
C. increase the amount of molasses.
D. increase the crystal size.
A. act as an acidifying agent.
The noble gas which occurs most abundantly in the atmosphere is
A. helium
B. neon
C. krypton
D. argon
D. argon
Production of alcohol by fermentation ofmolasses is an __________ process.
A. anaerobic
B. aerobic
C. endothermic
D. both(b) and (c)
B. aerobic
Main constituents of portland cement are calcium
aluminate and
A. gypsum
B. silicates
C. sodium silicate
D. carbonates
B. silicates
Pick out the wrong statement.
A. High early strength cement are made from
materials having high silica to lime ratio.
B. The function of gypsum in cement is to enhance its initial setting rate.
C. Acid resistant cements are known as silicate
cement.
D. Major component of greyish portland cement is
tricalcium silicate
A. 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.
A. freeze drying
B. electrolytic
C. solar evaporation
D. vacuum evaporation
A. freeze drying
Which of the following is a detergent ?
A. Fatty alcohol
B. Alkyl benzene sulphonate (ABS)
C. Fatty acids
D. Methylene chloride
B. Alkyl benzene sulphonate (ABS)
Sulphuric acid is mainly used in the __________ industry.
A. fertiliser
B. steel
C. paper
D. paint
A. fertiliser
Pick out the wrong statement pertaining to nitric acid.
A. About 90% of nitric acid is manufactured by
Ostwald’s process.
B. It is a strong mono basic acid which reacts with
almost all the metals except noble metals.
C. Yellow color of impure nitric acid is because of
dissolved oxides of nitrogen (mainly NO2).
D. Arc process of nitric acid manufacture is
economical as compared to Ostwald’s
process.
D. Arc process of nitric acid manufacture is
economical as compared to Ostwald’s
process.
Alcohol percentage in molasses may be around
A. 10
B. 40
C. 70
D. 85
B. 40
Main use of hydrazine is
A. as a rocket fuel
B. in water treatment
C. as a disinfectant
D. as fire retardant
A. as a rocket fuel
Main use of liquid nitrogen is in
A. rocket propulsion.
B. making gun powder.
C. detergent manufacture.
D. refrigerative cooling.
D. refrigerative cooling.
Comparing sulphate process with sulphite process, we find that __________ in the later.
A. both temperature & pressure in the former is less than that
B. both temperature & pressure in the former is
more than that
C. temperature is more in the former whereas
pressure is more
D. pressure is more in the former whereas
temperature is less
B. both temperature & pressure in the former is
more than that
Which of the following is a disacchride ?
A. Sucrose
B. Glucose
C. Starch
D. Maltose
A. Sucrose
__________ is produced using polycondensation
reaction.
A. Polythene
B. Phenol formaldehyde
C. Poly vinyl chloride
D. none of these
B. Phenol formaldehyde
Raw materials required for the manufacture of
__________ is acetylene and hydrochloric acid.
A. phthalic anhydride
B. vinyl chloride
C. maleic anhydride
D. dacron
B. vinyl chloride
In industrial nomenclature, alcohol means
A. butyl alcohol
B. propyl alcohol
C. ethanol
D. methyl alcohol
C. ethanol
Which of the following is the purest form of water out of the following?
A. Underground water
B. Rain water
C. Well water
D. Lake water
B. Rain water
Use of water having dissolved oxygen in boilers promotes
A. corrosion
B. sequestration
C. scale formation
D. none of these
A. corrosion
Unsaturated oils compared to saturated oils have
A. lower melting point & higher reactivity to
oxygen.
B. higher melting point & higher reactivity to oxygen.
C. lower melting point & lower reactivity to oxygen.
D. higher melting point & lower reactivity to oxygen.
A. lower melting point & higher reactivity to
oxygen.
With increase in temperature, the equilibrium constant at constant pressure (Kp) for oxidation of sulphur dioxide
A. increases
B. increases linearly
C. decreases
D. decreases linearly
C. decreases
Chemical formula of oleum is
A. H2SO3
B. H2SO4
C. H2S2O7
D. H2SO7
D. H2SO7
Electrodeposition of metals i.e. electroplating is never done on
A. metals
B. alloys
C. refractories
D. non-metals
C. refractories
Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.
A. cutting
B. fibrillation
C. hydration
D. strengthening
D. strengthening
The biochemical treatment applied to sewage effluents is a process of
A. dehydration
B. reduction
C. oxidation
D. polymerisation
C. oxidation
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.).
A. 1
B. 10
C. 25
D. 40
B. 10
Sucrose content in cane sugar may be around
__________ percent.
A. 50
B. 70
C. 80
D. 95
D. 95
‘Hollander beater’ machine used in the paper
manufacturing plant does not accomplish the task of
A. final rolling out of paper.
B. cutting of fibres.
C. hydration of fibres.
D. fibrillation of fibre.
A. final rolling out of paper.
Yellow glycerine is made into white, using
A. activated carbon
B. diatomaceous earth
C. bauxite
D. bentonite
A. activated carbon
Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is
__________ °C.
A. -5 to 0
B. 5 to 10
C. 30 to 50
D. 75 to 80
C. 30 to 50
Brackish water which contains mostly dissolved salt, can be purified by the __________ process.
A. reverse osmosis
B. sand filter
C. lime soda
D. permutit
A. reverse osmosis
Major component of flint glass is
A. lead oxide
B. silica
C. alumina
D. soda
A. lead oxide
Calcination of gypsum produces
A. plaster of paris
B. salt cake
C. nitre cake
D. lime
A. plaster of paris
Phthalic anhydride is produced by the oxidation of
A. naphthalene
B. benzene
C. toluene
D. aniline
B. benzene
Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance.
A. flint
B. soda
C. pyrex
D. potash
C. pyrex
Zeigler process
A. produces high density polyethylene.
B. produces low density polyethylene.
C. uses no catalyst.
D. employs very high pressure.
A. produces high density polyethylene.
Massecuite is
A. used for paper making.
B. used as a cattle feed.
C. highly acidic in nature.
D. none of these.
D. none of these.
Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
A. 70
B. 55
C. 80
D. 94
D. 94
Sodium salt of higher molecular weight fatty acid is termed as the __________ soap.
A. hard
B. soft
C. metallic
D. lubricating
B. soft
Synthetic glycerine is produced from
A. toluene
B. phenol
C. propylene
D. naphthalene
C. propylene
A ‘unit process’ is exemplified by the
A. distillation
B. hydrogenation of oils
C. absorption
D. humidification
B. hydrogenation of oils
Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4 + 4H2, is not practised, as it is
A. a slow reaction.
B. a discontinuous reaction (requiring regeneration
of iron by water gas intermittently).
C. still in development stage (by employing fluidised
bed technique).
D. all (a), (b) and (c).
D. all (a), (b) and (c).
Viscosity index improver (like polystrene or
polyisobutylene) is added to lubricant to
A. reduce its viscosity.
B. increase its viscosity.
C. reduce the variation in its viscosity with
temperature.
D. increase the variation in its viscosity with
temperature.
C. reduce the variation in its viscosity with
temperature.
