New Latest Chemical Process MCQs – Competitive 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:
Phthalic anhydride is used____________________?
A. In insecticides manufacture
B. As plasticisers
C. In making PVC
D. For making nylon-6
Phenol is mainly used____________________?
A. To produce polyester resin
B. To produce phenol formaldehyde
C. To produce benzene
D. As a plasticiser for unsaturated polyester
______________ is obtained as a by-product in the manufacture of sodium hydroxide using brine ?
A. Chlorine
B. Sodium carbonate
C. Ammonium chloride
D. Sodium bi-carbonate
Solvent extracted oil________________?
A. Is odourless
B. Has low free fatty acid content
C. Has more of unsaturates
D. None of these
Fish contains about _______________ percent oil ?
A. 10
B. 5
C. 20
D. 35
DDT stands for___________________?
A. Dichloro-diphenyl-trichloromethane
B. Diethyl-diphenyl-trichloromethane
C. diphenyl-dichloro-trichloromethane
D. Dichloro-diphenyl-trichloroethane
Metallic soap is ________________ salt of fatty acids ?
A. Potassium
B. Sodium
C. Both sodium & potassium
D. Aluminium or calcium
Function of thinner in a paint is to ______________________ ?
A. Prevent gelling of the paint
B. Accelerate the oxidation of oil
C. Suspend pigments & dissolve film forming materials
D. Form a protective film
Polymethyl methacrylate (PMMA) is known as ____________________?
A. Teflon
B. Bakelite
C. Perspex
D. Nylon-6
Laboratory glass wares which reacts with hydrofluoric acid, are made of the ______________ glass?
A. Soda lime
B. Borosilicate
C. Lead
D. Alkali silicate
Bio-degradable detergents ___________________?
A. Can be readily oxidised
B. Have an isoparaffinic structure
C. Pose problem in sewerage plant
D. Should not be used as it spoils the cloth
CaCl(OCl) is the chemical formula of___________________?
A. Plaster of Paris
B. Bleaching powder
C. Hypo
D. Aqua regia
Polymerisation product of C2F4 (carbon tetrafluoride) is called P.T.F.E (poly chloro tetra fluoro ethylene). It is also called___________________?
A. Silicone
B. Polyurethane
C. Teflon
D. Epoxy resin
Permanent hardness of water can be removed by_________________?
A. Treating it with zeolites
B. Addition of soda ash to it
C. Passing it through sodium hexametaphosphate
D. All A , B, and C.
Enamels______________________?
A. Give good glossy finish
B. Do not contain pigment
C. Are prepared from non-drying oil
D. Are same as varnish
Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on ____________________?
A. Slaked lime
B. Calcium perchlorate
C. Soda lime
D. None of these
Refractory bricks having high thermal conductivity is desirable, when it is to be used in the _________________?
A. Blast furnace
B. L.D. converter
C. Rotary kiln
D. Recuperator
Glycerine is a by-product of the ________________ industry ?
A. Soap
B. Oil hydrogenation
C. Detergent
D. Paint
The amount of benzene present in pure Benzol is about _______________ percent ?
A. 50
B. 30
C. 70
D. 90
The purpose of tanning in leather industry is to____________________?
A. Stiffen the leather
B. Make it flexible
C. Smoothen the leather
D. Impart water resistance
Solvay process is used for the manufacture of____________________?
A. Caustic potash
B. Soda ash
C. Caustic soda
D. Soda lime
Rosin soap is added during paper manufacture to____________________?
A. Improve opacity
B. Impart adhesive properties
C. Impart resistance to penetration by liquids
D. None of these
Enzymes are organic catalysts used in the ____________________ reactions ?
A. Photochemical
B. Biochemical
C. Chemical
D. Electrochemical
Which of the following is not an antibiotic ?
A. Streptomycin
B. Penicillin
C. Tetracycline
D. Quinine
Glycerine is recovered from lye by ___________________?
A. Evaporation followed by vacuum distillation
B. Extractive distillation technique
C. Liquid extraction technique
D. None of these
Chemical Environmental Engineering Mcqs
Salt is the basic raw material for the manufacture of____________________?
A. Glass
B. Cement
C. Potteries
D. Caustic soda
Hydrogenation of oil takes place in a/an ____________________ reactor ?
A. Plug flow
B. Trickle bed
C. Autothermal
D. None of these
Na2CO3 is called _________________?
A. Plaster of Paris
B. Soda ash
C. Washing soda
D. Calcite
A mineral is termed as ‘ore’, if ____________________?
A. A metal can be economically extracted from it
B. The metal present in it is costly
C. It contains ≥ 40% metal
D. All A , B. and C.
Fourdrinier machine is used in the manufacture of ___________________?
A. Alcohol from molasses
B. Paper
C. Sugar
D. Phenol formaldehyde
Which of the following paper does not require a filler during manufacture ?
A. Writing paper
B. Bond paper
C. Blotting paper
D. Coloured paper
________________ acid is an unsaturated fatty acid ?
A. Stearic
B. Oleic
C. Palmitic
D. Oxalic
Which glass is usually used in optical work ?
A. Fibre glass
B. High silica (borosilicate) glass
C. Photo-sensitive glass
D. Lead glass
The major use of butadiene is____________________?
A. As an anti-skinning agent in paint
B. In the manufacture of synthetic rubber
C. As a plasticiser for unsaturated polyester
D. None of these
Reaction of an alcohol with organic acid is called the ________________ reaction?
A. Neutralisation
B. Esterification
C. Saponification
D. Acidification
____________________ of rubber decreases after its vulcanisation?
A. Resistance to the action of organic solvent
B. Tackiness
C. Tensile strength
D. Maximum service temperature
The enzyme which converts starch into the disaccharides maltose is_________________?
A. Diastase
B. Yeast
C. Maltase
D. None of these
Stereospecific agents are exemplified by________________?
A. Ziegler catalysts
B. Supported metal oxide catalysts
C. Radiation
D. All A , B. & C
Hydrogenation of oil does not ___________________?
A. Raise its melting point
B. Remove double bonds
C. Improve its resistance to oxidation
D. None of these
Sulphuric acid saturated with SO3 is called_________________?
A. Sulphurous acid
B. Concentrated H2SO4
C. Oleum
D. None of these
Main constituent of limestone is____________________?
A. CaCO3
B. Na2CO3
C. MgCO3
D. CaSO4
Refractory bricks burnt at very high temperature have got______________?
A. Greater resistance to corrosion by slags
B. High spalling tendency
C. Less resistance to corrosion by slags
D. None of these
Which allotrope of sulphur is insoluble in carbon disulphide ?
A. Monoclinic sulphur
B. Rhombic sulphur
C. Plastic sulphur
D. Milk of sulphur
Carbon tetrachloride (CCl4) is the starting raw material for the manufacture of____________________?
A. Parathion
B. Perchloroethylene
C. Trichloroethylene
D. Methanol
Multistage catalytic converter is not used in the___________________?
A. Conversion of SO2 to SO3
B. NH3 synthesis reaction
C. Both of the above
D. Neither of the above
Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene ?
A. AgO
B. ZnCl2
C. Al2O3
D. Fe2O3
Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process ?
A. NH3
B. CaO
C. NaCl
D. Coke
The difference between saponification value and acid value is____________________?
A. Called ester value
B. Constant for all fatty oils
C. Always negative
D. None of these
Chrome tanning and vegetable tanning are done for ________________?
A. Light & heavy leather respectively
B. light & Heavy leather respectively
C. Both light & heavy leather
D. Neither light nor heavy leather
Main constituents of cotton fiber is__________________?
A. Starch
B. Cellulose
C. Lignin
D. Gelatine
____________________ process is used for producing soda ash?
A. Chance
B. Chamber
C. Tromp
D. Solvay
Which of the following fuel gases contains maximum amount of carbon monoxide ?
A. Water gas
B. Coke oven gas
C. Blast furnace gas
D. L.D. converter gas
Lubricating greases are a mixture of__________________?
A. Mineral oil, soap and additives
B. Mineral oil and fatty oil
C. Mineral oil and metallic soap
D. Fatty oil and metallic soap
Pig iron is produced by blast furnaces in India using mostly the iron ore named _______________?
A. Hematite
B. Siderite
C. Magnetite
D. Chalcopyrite
Chalcopyrite is the main ore of_________________?
A. Copper
B. Tin
C. Lead
D. Iron
Chemical Process Mcqs
99.5% purity oxygen is used in_____________________?
A. Cutting and welding by oxy-acetylene flame
B. Gas masks and artificial breathing apparatus
C. Hospitals for medicinal purposes
D. All A, B, and C.
Zeigler process__________________?
A. Produces high density polyethylene
B. Uses no catalyst
C. Produces low density polyethylene
D. Employs very high pressure
Fat dispersed in water is exemplified by__________________?
A. Gel
B. Colloids
C. Butter
D. Emulsion
Dacron is a ___________________?
A. Condensation product of dimethyl terephthalate and ethylene glycol
B. Thermosetting material
C. Condensation product of Hexamethylene diamine and adipic acid
D. None of these
Hydrazine (N2H4) is used mainly as a/an__________________?
A. Detergents additive
B. Rocket fuel
C. Explosive
D. None of these
Which of the following is an yellow pigment ?
A. Ferrous sulphate
B. Titanium dioxide
C. Lead chromates
D. Zinc sulphides
Synthesis gas is a mixture of__________________?
A. CO and H2
B. H2, CH4 and CO
C. N2 and H2
D. CO2 and H2
___________________ glass is used for the manufacture of optical glass ?
A. Soda
B. Pyrex
C. Flint
D. Crooke’s
Hydrazine is used in water treatment for the removal of___________________?
A. Turbidity
B. Dissolved oxygen
C. Colloidal impurities
D. Chlorinous taste
Sugar content in sugarcane on cane basis is about _______________ percent by weight ?
A. 15 to 20
B. 5 to 10
C. 1 to 5
D. 20 to 30
________________ acid is the main constituent of cotton seed oil ?
A. Palmitic
B. Linoleic
C. Acetic
D. Oleic
In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst___________________?
A. Has a longer life and is not poisoned by arsenic
B. Gives higher conversion efficiency
C. Handles lower SO2 content gas (7 -10% SO2), thus increasing the capital cost of the plant
D. All A , B. and C.
Nylon-6 is manufactured from ______________________?
A. Caprolactam
B. Hexamethylene diamine and Sebacic acid
C. Hexamethylene diamine and Maleic anhydride
D. Hexamethylene diamine and adipic acid
Fat splitting catalyst is__________________?
A. Al2O3
B. ZnO
C. CaCO3
D. Fe
Thermodynamics Mcqs
Manufacture of phthalic anhydride uses ______________ as a catalyst ?
A. Cr
B. Ni
C. V2O5
D. Al2O3
The end bleaching agent used to move last traces of colour bodies from the pulp is ____________________?
A. Chlorine dioxide (ClO2)
B. SO2 gas
C. MgO
D. Mercaptans
Zeolite is used in the ____________________ ?
A. Water treatment
B. Hydrogenation of fatty oil as a catalyst
C. Glass manufacture
D. Development of exposed photographic plate
____________________ is a thermosetting plastic ?
A. Polystyrene
B. Epoxy polymer
C. P.V.C.
D. Polythene
Which is a high grade pulp ?
A. Mechanical pulp
B. Rag pulp
C. Sulphate pulp
D. Sulphite pulp
Commercial production of soda ash by Solvay process requires limestone, ___________________ as raw materials?
A. Coke and caustic soda
B. Brine and coal
C. Coke and sand
D. None of these
Wet chlorine gas produced during electrolysis of brine is dehydrated by__________________?
A. Spraying 66° Be H2SO4 counter current to the flow of the gas
B. Passing it through a bed of silica gel
C. Passing it through a bed of diatomaceous earth
D. None of these
Nylon-6 is a__________________?
A. Polyamide
B. Polyester
C. Thermosetting resin
D. None of these
P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as____________________?
A. Neoprene
B. Bakelite
C. Teflon
D. Nylon-66
Ore concentration by froth floatation utilises the ______________ of ore particles ?
A. Terminal velocities
B. Wetting characteristics
C. Density difference
D. None of these
Ethanol amine is produced using ammonia and_________________?
A. Ethanol
B. Ethylene oxide
C. Ethyl benzene
D. Ethane
Chloramines are used in water treatment for_____________________?
A. Disinfection and control of taste & odour
B. Removing turbidity
C. Corrosion control
D. Control of bacteria
Basic oxide is absent in ___________________ glass?
A. Pyrex
B. Flint
C. Quartz
D. All A, B. & C
Fusion of limestone and ______________ produces high alumina cement?
A. Quicklime
B. Bauxite
C. Sand
D. Calcite
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. Hydrolysis tendency in presence of water
B. Greater tendency of decomposition at elevated temperature
C. Poor oxidation stability and high gum forming tendency
D. All A, B. and C
Hydrogenation of oil/fat does not_________________?
A. Improve its resistance to rancid oxidation
B. Remove double bonds
C. Raise its melting point
D. None of these
Epoxy resin__________________?
A. Is a good adhesive
B. Is a polyester
C. Cannot be used for surface coatings
D. Is an elastomer
Temporary hardness of water can be removed by__________________?
A. Addition of lime
B. Boiling
C. Filtration (through gravity sand filter)
D. Addition of alum (a coagulant)
Which of the following sugars is the sweetest ?
A. Sucrose
B. Fructose
C. Glucose
D. Lactose
Ethyl alcohol cannot be produced_________________?
A. From waste sulphite substrate of paper mills
B. From molasses
C. By Esterification and hydrolysis of ethylene
D. None of these
Varnish does not contain_______________?
A. Thinner
B. Pigment
C. Both of the above
D. Neither of the above
Deacon’s method is used for the manufacture of____________________?
A. Common salt
B. Glauber’s salt
C. Chlorine
D. Graphite electrode
Which of the following is not required in the manufacture of soda ash by Solvay process ?
A. Limestone
B. Ammonia
C. Nitric acid
D. None of these
Main constituents of natural rubber is____________________?
A. Polybutadiene
B. Polyisoprene
C. Polystyrene
D. Polychlorophrene
Fluorescent dyes are added in detergents to__________________?
A. Act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the whiteness appearance of white fabrics
B. Act as tarnish inhibitor for metals like German silver
C. Attain distinctiveness from other brands
D. None of these
Portland cement consists mainly of__________________?
A. CaO & SiO2
B. CaO & Al2O3
C. SiO2 & Al2O3
D. CaO & Fe2O3
Alkylbenzene sulfonate (ABS) is a____________________?
A. Detergent
B. Pesticide
C. Rubber
D. Polyester
Bleaching action of bleaching powder is due to its _____________ properties ?
A. Disinfecting
B. Oxidising
C. Reducing
D. None of these
Very fine suspended and colloidal impurities are removed from water by a process called___________________?
A. Disinfection
B. Coagulation
C. Sedimentation
D. Softening
The most economical pulp for the production of newsprint would be the _____________________ pulp?
A. Ground-wood
B. Sulphite
C. Sulphate
D. Semi-chemical
Esterification reaction___________________?
A. Is reversible
B. Produces soap
C. Is a reaction between an alcohol and an organic acid
D. All A, B. and C.