Competitive Chemical Process MCQs – Up To Date Chemical Engineering MCQs
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Latest Chemical Engineering MCQs
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Latest Chemical Process Mcqs
The most occurred mcqs of Chemical Process in past papers. Past papers of Chemical Process Mcqs. Past papers of Chemical Process Mcqs . Mcqs are the necessary part of any competitive / job related exams. The Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Chemical Process Mcqs. The Important series of Chemical Process Mcqs are given below:
Commercial production of calcium carbide requires limestone and __________________ as raw materials?
A. Soda ash
B. Sand
C. Coke
D. Fuel oil
The most stable allotropic form of phosphorous is the _________________ phosphorous?
A. Yellow
B. Black
C. White
D. Red
Type of glass used in optical work is the ___________________ glass?
A. Fibre
B. Soda-lime
C. Lead
D. Borosilicate
Titanium dioxide is a/an ___________________ colour pigment?
A. White
B. Yellow
C. Black
D. Blue
Fusel oil is a/an_________________?
A. Extract from medicinal herbs
B. Essential oil
C. Mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses)
D. None of these
Bordeaux mixture is a/an________________?
A. Insecticide
B. Inorganic fungicide
C. Fertiliser
D. Explosive
Concentration of NaOH solution produced by mercury electrolytic cell is about _______________ percent?
A. 25
B. 10
C. 50
D. 98
Solvent used for extraction of oil is_____________________?
A. Furfural
B. Methyl ethyl ketone
C. Hexane
D. None of these
______________ is an ore concentrating metallurgical process involving a chemical change?
A. Froth floatation
B. Electromagnetic separation
C. Roasting
D. None of these
Rotary kiln is not involved in the production of___________________?
A. Lime from limestone
B. Cement
C. Slaked lime from quick lime
D. None of these
In the manufacture of viscose rayon, the raw material used industrially is ____________________?
A. Bamboo
B. Eucalyptus wood
C. Bagasse
D. Fine teak wood
Starting raw material for the manufacture of alum is_________________?
A. Gypsum
B. Alumina
C. Bauxite
D. Ammonium bicarbonate
Plasticisers are added to paints to______________________?
A. Make glossy surface
B. Make it corrosion resistant
C. Give elasticity & prevent cracking of the film
D. Increase atmospheric oxidation
BHC (Benzene hexachloride) is made by the chlorination of benzene_____________________?
A. Which is an addition reaction
B. In absolute dark
C. Which is a substitution reaction
D. In presence of sunlight
The combustion reaction, C + O2 = CO2, is__________________?
A. Exothermic
B. Autocatalytic
C. Endothermic
D. None of these
___________________ iron is the purest form of iron?
A. Pig
B. Wrought
C. Cast
D. High silicon
Styrene-butadiene-rubber (SBR) as compared to natural rubber has________________?
A. Poorer resistance to oxidation
B. Poorer tensile strength
C. Greater amount of heat build-up under heavy loading
D. All A , B. and C.
Thermodynamics Mcqs
Impurities present in brine is normally removed by treatment with ?
A. Lime and soda ash
B. NH3 and CO2
C. Lime, ammonia and carbon
D. All A , B. and C.
Producer gas consists mainly of________________________?
A. CO, CO2 N2, H2
B. H2, CH4
C. CO, H2
D. C2H2, CO2, H2
Commonly used glass is known as the _______________ glass?
A. Hard
B. Flint
C. Pyrex
D. Soda
Which of the following is not a raw material used for the manufacture of ordinary glass ?
A. Iron oxide
B. Limestone
C. Soda ash
D. Silica
L.D. converter is used in the production of_________________?
A. Copper
B. Steel
C. Pig iron
D. Zinc
Conversion of CO to CO2 by steam in presence of a catalyst is called__________________?
A. Steam gasification
B. Shift conversion
C. Steam reforming
D. None of these
Which of the following is not a pyrite ore ?
A. Galena
B. Celestite
C. Gypsum
D. Siderite
Saponification value/number of an oil or fat is a measure of its ___________________?
A. Insoluble fatty acid content
B. Degree of unsaturation of the fatty acids present in it
C. Average molecular weight
D. Fatty acid content
Salt cake is chemically represented by_________________?
A. Na2SO4
B. MgSO4
C. CaSO4. ½H2O
D. BaSO4
Cooking liquor in case of sulphite process is _____________________?
A. Sodium sulphite and sodium bisulphite
B. Magnesium sulphate and magnesium bicarbonate
C. Magnesium sulphite and free SO2 in acid medium
D. None of these
Raw materials used for producing ________________ cement does not contain iron oxide?
A. Slag
B. Waterproof
C. White
D. Pozzolan
Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda ?
A. Mercury electrolytic cell process
B. Diaphragm electrolytic cell process
C. Lime-soda process
D. None of these
Fermentator temperature during production of alcohol from molasses is around ______________ °C?
A. 130
B. 30
C. 5
D. 300
Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of_________________?
A. Lead
B. Arsenic
C. Carbon
D. Sulphur
Neoprene is chemically known as___________________?
A. Polyurethane
B. Styrene butadiene rubber (SBR)
C. Polybutadiene
D. Polychlorophrene
Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and___________________?
A. Sulphuric acid
B. Hydrochloric acid
C. Phosphoric acid
D. Hydrofluoric acid
Function of sodium thiosulphate (hypo) in development of photographic film/plate is to______________?
A. Remove metallic silver
B. Brighten the faint images
C. Convert silver chloride to silver
D. Remove unexposed silver halide
Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is ______________ °C?
A. 150-200
B. 60-70
C. 25
D. 250-300
Cement mainly contains_________________?
A. CaO, SiO2, Al2O3
B. Al2O3, MgO, Fe2O3
C. MgO, SiO2, K2O
D. CaO, MgO, K2O
In the Lurgi coal gasifier_________________?
A. Low carbon conversion efficiency is achieved
B. Coking coals cannot be used
C. Entrainment of solids is higher
D. Large quantity of coal can be processed
Claude process of gas liquefaction employs___________________?
A. Merely compression of gas beyond its critical pressure
B. Heat exchange with colder stream
C. Joule-Thomson expansion cooling
D. Adiabatic expansion against a piston or in a turbine
Cellulose percentage in bamboo fibre is about_________________?
A. 20
B. 10
C. 50
D. 85
Neoprene is the trade name of___________________?
A. Phenol formaldehyde
B. Polyurethane
C. Polychlorophrene
D. Styrene-butadiene rubber
Analgesic drugs are__________________?
A. Pain relievers
B. Used in the treatment of typhoid
C. Used in the treatment of T.B.
D. Antibiotics
______________ process is used for the manufacture of sodium carbonate by ammonia soda process?
A. Bosch
B. Ostwald’s
C. Solvay
D. Haber’s
Pick out the wrong statement. Iodine value of an oil or fat is________________?
A. A measure of its unsaturation
B. The number of grams of iodine taken up by 100 gm of oil or fat
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
Hydrogenation of edible vegetable oils_________________?
A. Increases their melting point
B. Is an exothermic reaction
C. Is done in presence of nickel catalyst
D. All A , B. and C.
Which of the following is an endothermic reaction ?
A. Absorption of SO3 in 98% H2SO4
B. Thermal dissociation of iron pyrites
C. C + H2O = CO + H2
D. Both B. and C.
Alcohol is produced by the___________________?
A. Esterification of a fat
B. Hydrolysis of an ether
C. Oxidation of an aldehyde
D. None of these
Alum [Al2(SO4)3] is used as a coagulant in water treatment to remove____________________?
A. Turbidity
B. Colour
C. Bacteria
D. All A , B. and C.
Main constituent of dolomite is __________________?
A. K2CO3
B. MgCO3
C. CaCO3
D. Na2CO3
Nickel is not used as a catalyst in the __________________ reaction ?
A. Shift conversion
B. Steaming reforming of naphtha
C. Oil hydrogenation
D. Ammonia cracking/dissociation
Pick out the wrong statement ?
A. In nylon-6, the number 6 represents the total number of carbon atoms in the ring
B. Catalytic hydrogenation of carbon monoxide produces methyl alcohol
C. Raw materials for DDT manufacture are benzene and chlorine
D. Ethanolamines are produced by using ammonia and ethylene oxide as raw material
Which one of the following is not likely to be a constituent of vegetable oils ?
A. Citric acid
B. Stearic acid
C. Oleic acid
D. Glycerol
Zeolite is a/an___________________?
A. Naturally occuring clay which is capable of exchanging cations
B. Catalyst used in shift conversion
C. Abrasive material
D. None of these
Polycaprolactam is commercially known as___________________?
A. Nylon-6
B. Dacron
C. Nylon-66
D. Rayon
Vanillin is a type of____________________?
A. Anti-pyretic drug
B. Dye
C. Flavour
D. Food preservative
Chemical Environmental Engineering Mcqs
Setting of plaster of Paris is accompanied with___________________?
A. Hydration
B. Hydrolysis
C. Dehydration
D. Loss of CO2
Cumene (isopropyl benzene) is made by ____________________?
A. Polymerisation of a mixture of benzene & propylene
B. Propylene alkylation of benzene
C. Oxidation of naphthalene
D. None of these
Resistance to fusion of the refractory under a steady rising temperature condition is called ____________________ ?
A. Spalling
B. Refractoriness
C. Both of the above
D. Neither of the above
_________________ is not a constituent of gun powder?
A. Carbon
B. Sulphur
C. Charcoal
D. Potassium nitrate
Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of_________________?
A. Collagen
B. Molasses
C. Tannin
D. Carbohydrate
Which of the following is an organometallic compound ?
A. Zeolite
B. Tetra-ethyl lead
C. Isopropyl alcohol
D. Cumene
Essential oils are usually obtained using__________________?
A. Extractive distillation
B. Steam distillation
C. Solvent extraction
D. Leaching
All enzymes are made of______________________?
A. Carbohydrates
B. Fats
C. Proteins
D. Amino acids
Sucrose is a disaccharide consisting of____________________?
A. Glucose and galactose
B. Glucose and fructose
C. Glucose and glucose
D. Fructose and galactose
Pasteurisation of milk means______________________?
A. Inhibiting the growth of micro-organisms without killing them
B. Killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics
C. Removal of fatty and albuminous substance from it
D. None of these
H2S is scrubbed from refinery gases by absorption using ________________________?
A. Chilled water
B. Ethanol amine
C. Dilute H2SO4
D. Tri-butyl phosphate
The gasification reaction represented by, C + H2O = CO + H2, is a/an _________________ reaction?
A. Catalytic
B. Endothermic
C. Exothermic
D. Autocatalytic
Coke used for the production of calcium carbide should have____________________?
A. Low ignition temperature
B. Low ash content
C. High electrical resistivity
D. All A , B. and C.
Saponification number of an oil or fat____________________?
A. Detects its adulteration
B. Is inversely proportional to its molecular weight
C. Gives an idea about its molecular weight
D. All A , B. & C.
Alcohol content in freshly prepared natural and fortified wine may be respectively around ______________ percent ?
A. 7-14 and 14-30
B. 14 – 30 and 40-50
C. 7-14 and 40-50
D. 10 – 20 and 40 – 50
Sulphur removal by heating of pyrite ore in presence of air is called its ____________________?
A. Calcination
B. Roasting
C. Reduction
D. Smelting
The process involved in converting rubber into a thin sheet or coating it on fabric is called ___________________?
A. Mastication
B. Extrusion
C. Calendaring
D. Vulcanisation
Liquor poisoning generally occurs due to the presence of _________________ in it ?
A. Impurities
B. Ethyl alcohol
C. Methyl alcohol
D. Carbonic acid
Silicone is a/an ___________________?
A. Monomer
B. Inorganic polymer
C. Thermoplastic
D. None of these
Thermosetting materials ______________________?
A. Are cross-linked molecules
B. Are solvent soluble
C. Soften on application of heat
D. None of these
Roasting of metallurgical ores is done mainly to ___________________?
A. Sinter the ore
B. Dehydrate it
C. Remove CO2 & H2O
D. Remove arsenic & sulphur
Black liquor is converted into white liquor by __________________________?
A. Evaporation and burning the concentrate followed by causticisation of products
B. Selective liquid extraction
C. Multi-effect evaporation only
D. Extractive distillation
Which of the following is not an abrasive material ?
A. Bakelite
B. Corundum
C. Pumice
D. Carborundum
More than 100 percent of _________________ is present in oleum?
A. H2SO3
B. H2SO4
C. SO3
D. SO2
Co-efficient of thermal expansion of glass is decreased by the addition of _______________ during its manufacture?
A. MnO2
B. CaO
C. ZnO
D. FeS
Pick out the wrong statement ?
A. Both temperature and pressure in the digestor is less in case of the sulphite method as compared to that in the sulphate method
B. Digestion time for bagasse is less than that for wood base materials
C. Kraft method of pulp manufacture can process all types of fibrous raw materials
D. None of these
Pick out the true statement pertaining to water treatment ?
A. Activated carbon can be used for taste & odour control without subsequent filtration
B. Slow sand filters can remove colour completely
C. Application of activated carbon reduces the temporary hardness of water
D. Normally, the turbidity is removed by adding a coagulant prior to sedimentation
Massecuite is a terminology used in the ______________ industry ?
A. Soap
B. Oil hydrogenation
C. Paint
D. Sugar
Wood charcoal is used for decolouration of sugar, because it _______________ the coloured materials?
A. Adsorbs
B. Reduces
C. Oxidises
D. Converts
Chemical Process Mcqs
Thermal pyrolysis of ethylene dichloride produces___________________?
A. Ethanol amine
B. Vinyl chloride
C. Trichloroethylene
D. Ethylene oxide
Pick out the wrong statement?
A. Glass is decolorized during its manufacture by adding antimony oxide, manganese dioxide or arsenic oxide
B. Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate
C. Ordinary glass is represented chemically by Na2O . CaO . 6SiO2
D. Red color is imparted to glass by addition of arsenic oxide
Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is___________________?
A. 0.34
B. 0.14
C. 0.94
D. 1.4
Pick out the false statement pertaining to water treatment ?
A. Water with pH value less than 7, is acidic
B. The zeolite water softening process reduces the hardness of water by not more than 50%
C. Sodium sulphate or sodium carbonate do not cause hardness in water
D. Aeration of water is effective in CO2 removal
Pick out the wrong statement ?
A. Water gas is called blue gas because of the color of the flame, when it is burnt
B. Acetylene gas cannot be used for illumination purpose
C. Strongly caking coal should not be used in the Lurgi gasifier
D. Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels
Diaphragm electrolytic cell as compared to mercury electrolytic cell_____________________?
A. Requires less specific power consumption for the production of chlorine
B. Produces 70% NaOH solution
C. Requires lesser investment for similar capacity
D. All A , B. and C
Concentration of sulphide ores is done usually by____________________?
A. Smelting
B. Roasting
C. Froth floatation
D. Electromagnetic separation
Bleaching of paper pulp is done with__________________?
A. Bromine
B. Activated clay
C. Chlorine or chlorine dioxide
D. Magnesium sulphite
Pick out the wrong statement ?
A. Production of cold SBR employs lower pressure as compared to that of hot SBR
B. Polymerisation temperature can modify the properties of SBR
C. Cold rubber (SBR) is superior as compared to hot rubber (SBR)
D. None of these
Which of the following processes is absent in glass manufacturing process ?
A. Sintering
B. Melting
C. Shaping or forming
D. Annealing
Pick out the wrong statement ?
A. Contact process of sulphuric acid manufacture produces pure acid of concentration ≥ 98%
B. Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80%
C. 75% oleum can be produced by distillation of 20% oleum
D. Contact process of sulphuric acid manufacture uses nickel as the catalyst
Pick out the wrong statement pertaining to the soap manufacture?
A. Transparent soaps are made by cold process
B. Colourless rosin is used in the manufacture of laundry soaps
C. Both laundry as well as toilet soaps are manufactured by hot process
D. Organic pigments are used as colouring materials in the soap manufacture
90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at _____________ °C ?
A. 250-280
B. 10-30
C. < 0
D. 500-600
Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have___________________?
A. Low co-efficient of thermal expansion
B. Sharp melting points
C. High electrical insulation properties
D. Compressive strength much greater than their tensile strengths
Pick out the wrong statement?
A. Mordant dyes are applied mainly to wools
B. Basic dyes (e.g. amino derivatives) are applied mostly to paper
C. Azoic dyes are mostly applied on cotton fabrics
D. None of these
Bromine is used in the preparation of___________________?
A. Fire proofing agents
B. Fire extinguishing compounds
C. Dyes and antiknock compounds
D. All A , B. and C.
Pick out the wrong statement?
A. Portland cement is made employing wet process
B. Dry process is used for the manufacture of cement, when the raw material is blast furnace slag
C. Gypsum is added to Portland cement to lengthen its setting time
D. None of these