Latest Chemical Engineering MCQs – Up To Date Chemical Process 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:
______________ is a thermosetting plastic?
A. Polythene
B. Polyvinyl chloride
C. Bakelite
D. Teflon
Antibiotic____________________?
A. Inhibits/destroys the growth of microorganisms
B. Is an antimalarial
C. Is used as a pain reliever
D. Is an anaesthetic
Digestion of wood-base materials (for manufacture of pulp) is done to __________________?
A. Remove lignin
B. Prevent deterioration on storage
C. Produce long fibres
D. None of these
Thermosetting plastic materials____________________?
A. Is useful for melt casting
B. Can be repeatedly melted
C. Cannot be melted after forming
D. Is useful for spinning
Rancidity of the fatty oil can be reduced by its__________________?
A.Oxidation
B. Hydrogenation
C. Decoloration
D. Purification
Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in______________________?
A. Sintering of porous catalyst
B.Pyrolysis of oil
C. Hydrogen embrittlement
D. All A, B. and C.
Oleum produces fumes of_____________________?
A.H2SO4
B. SO2
C. SO3
D. SO2 + H2SO4
Which of the following is not produced commercially from sea water ?
A. Common salt
B. Magnesium & potassium compounds
C. Bromine
D. Iodine
The most commonly used substance to speed up the sedimentation of sewage is___________________?
A. Lime
B. Chlorine
C. Sulphuric acid
D. Sodium bisulphite
Hydrogen gas is not produced commercially (for nitrogenous fertiliser manufacture) by _____________________?
A. Iron-steam reaction
B.Steam reforming of naphtha
C. Electrolysis of water
D. Its cryogenic separation from coke oven gas
______________ is an ore of lead?
A. Siderite
B. Galena
C. Quartz
D. Chalcopyrite
Presence of H2S in raw water (to be chlorinated) results in the_____________________?
A. Easy removal of its hardness
B. Increased dosage of chlorine to provide a disinfecting residual in the water
C. Reduced softening capacity of zeolite
D. None of these
Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like_________________?
A. Fragile nature
B. High cost
C. Easy poisoning tendency
D. All A, B. and C.
Separation of fresh water from sea water can be done by the _______________ operation ?
A.Absorption
B. Reverse osmosis
C. Osmosis
D. Adsorption
The main use of activated carbon in water treatment is to control ___________________?
A.Turbidity
B. Taste and odour
C. Bacterial growth
D. None of these
Fatty material used in soap making is _______________________?
A.Fatty alcohols
B. Fatty acid
C. Tallow
D. Detergents
Percentage of alcohol in beer may be around ______________________ percent?
A. 2-8
B. 27-32
C. 18-23
D. 1-4
Salt is added in the kettle during soap manufacture to separate ___________________?
A. Soap from lye
B. The metallic soap
C. Glycerine from lye
D. The unsaponified fat from soap
Thermodynamics Mcqs
The main product of high temperature carbonisation of coal is_____________________?
A. Coke
B. Tar
C. Ammonia
D. Phenol
Nylon-66 is so named because the____________________?
A. Average degree of polymerisation of the polymer is 1966
B. Polymer was first synthesised in 1966
C. Number of nitrogen atoms between two carbon atoms are 6
D. Number of carbon atoms between two nitrogen atoms are 6
Bitterns is a/an_________________?
A. By-product of chlor-alkali industry
B. Starting material for the production of iodine
C. Unsaturated fat
D. None of these
Permanent hardness of water can be removed by____________________?
A. Adding alum
B. Simply boiling
C. Passing it through cation & anion exchangers
D. All (A), B. and (C)
The yield of tar from high temperature carbonisation of dry coal is about _______________ percent?
A. 3
B. 22
C. 12
D. 0.3
Main product in calcium carbide-water reaction is___________________?
A. CO2
B. C2H2
C. Ca(OH)2
D. CaCO3
The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to___________________?
A. Avoid mechanical weakening of fibre
B. Increase the cellulose content
C. Remove lignin by way of crystallisation
D. None of these
Thermoplastic materials_____________________?
A. Do not soften on application of heat
B. Are solvent insoluble
C. Are heavily branched molecules
D. None of these
Flexible foam (for mattresses) is usually made of_____________________?
A. Silicone
B. PVC
C. Polyurethanes
D. Polyamides
Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo ?
A. Depithing
B. Bleaching
C. Digestion
D. None of these
The most widely used coagulant for removing suspended impurities from water is__________________?
A. Chlorine
B. Bleaching powder
C. Calcium sulphate
D. Alum
Iron ore hematite is concentrated using ____________________?
A. Electromagnetic separation mainly
B. Gravity separation
C. Roasting
D. Froth floatation
Which of the following is an unsaturated fatty acid ?
A. Palmitic acid
B. Lauric acid
C. Stearic acid
D. Oleic acid
Percentage of glycerine present in the spent lye obtained during soap manufacture is about________________?
A. 20
B. 5
C. 0.5
D. 35
High purity nitrogen is used in__________________?
A. Making protective gas (95% N2 + 5% H2) for annealing of cold rolled steel strip coils
B. Fire fighting purposes
C. Both of the above
D. Neither of the above
The main use of HCl is in the___________________?
A. Drilling of petroleum wells and pickling of steel sheets
B. Treatment of spent fuel of nuclear reactor
C. Manufacture of cationic detergent
D. None of these
Sand and ______________ is fused at 1300°C, to produce sodium silicate ?
A. Coke
B. Soda ash
C. Limestone
D. Sodium sulphate
The chamber process is______________________?
A. Preferred over contact process for producing 98 to 100% H2SO4 and various oleums
B. A batch process for directly producing high strength (98 to 100%) H2SO4
C. Non-catalytic and operates only on pyrites
D. None of these
Hydrophilic group of a soap or detergent solution is____________________?
A. Soil loving
B. Water hating
C. Water loving
D. None of these
Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about ______________ °C ?
A. -196
B. -183
C. -83
D. -218
Haemoglobin is a/an____________________?
A. Biological catalyst
B. Amino acid
C. Protein
D. Enzyme
Esterification reaction produces _________________?
A. Vanaspati
B. Detergent
C. Soap
D. Mercaptans
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 ?
A. Reduction of Na+ ions
B. Oxidation of Cl- ions
C. Oxidation of Na+ ions
D. Reduction of Cl- ions
Sulphur addition in soap is done to _____________________?
A. Fasten lather formation
B. Cure pimples & dandruff
C. Improve the soap texture
D. Increase its cleansing action
Glass is__________________?
A. Subjected to galvanising
B. Mainly CaO
C. A super cooled liquid
D. All A , B. and C.
In sulphate pulp manufacture, the pressure and temperature in the digestor is____________________?
A. 1 atm., 800°C
B. 10 atm., 170-180°C
C. 1 atm., 170 – 180°C
D. 10 atm., 800 °C
The basic constituent of vegetable oils is ___________________?
A. Triglyceride
B. Fatty alcohol
C. Fatty acids
D. Mono esters
Fusion of bauxite and ________________ produces high alumina cement?
A. Coke
B. Limestone
C. Alum
D. Quartz
____________ are used as corrosion inhibitor for iron & steel in aqueous solutions ?
A. Sulphates
B. Chromates
C. Phosphates
D. Bi-carbonates
Which is the main reducing agent during production of iron from iron ore in a blast furnace ?
A. CO2
B. CO
C. C
D. H2
Which of the following is not responsible for causing permanent hardness of water ?
A. Ca(HCO3)2
B. MgCl2
C. CaCl2
D. None of these
Which of the following contains least amount of N2 ?
A. Coke oven gas
B. Producer gas
C. Blast furnace gas
D. Water gas (blue gas)
Oxidation of SO2 to SO3 is favoured by______________________?
A. High temperature and low pressure
B. Low temperature and high pressure
C. Low temperature and low pressure
D. High temperature and high pressure
Chemical Process Mcqs
Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at _____________ °C ?
A. 15-30
B. 250-300
C. 90-100
D. < 0
Paper pulp produced by Kraft/sulphate process is__________________ ?
A. Dull white in color
B. Bleached easily
C. Strong fibrous
D. Dark colored
White phosphorous is stored under water, because __________________?
A. It is poisonous
B. It does not react with water
C. Its kindling temperature in dry air is very low
D. It is unstable
Styrene is produced from ethyl benzene by the process of________________?
A. Dehydrogenation
B. Alkylation
C. Oxidation
D. Dehydration
Pure rectified spirit contains about _________________ percent alcohol?
A. 70
B. 45
C. 95
D. 99.5
The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is _________________?
A. Ultraviolet light
B. Oleum
C. Dilute H2SO4
D. None of these
Solvay process as compared to dual process (i.e. modified Solvay process) ?
A. Can use low grade brine
B. Involves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl
C. Has less corrosion problems
D. Both B. and C.
Insulin is an __________________ drug?
A. Anti-TB
B. Anti-malarial
C. Antibiotic
D. None of these
Molasses is the starting material for the production of ___________________ ?
A. Alcohol
B. Fatty acids
C. Essential oil
D. Massecuite
Prussian blue is chemically represented by__________________?
A. Ca SO4 . 2H2O
B. FeO.TiO2
C. Fe4 [Fe (CN6)3]
D. AlF3 . 3NaF
Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used_______________________?
A. As a lubricant
B. In hard water for cleaning of cloth
C. As a rust preventive
D. As a foam depressant in distillation column
Air used in aerobic fermentation must be sterilized, otherwise the ___________________?
A. Uniformity of product cannot be achieved
B. Contamination of pure culture would result
C. Recovery of product will be difficult
D. None of these
Lime and soda ash are added to water to remove ___________________?
A. Bicarbonates & sulphates of calcium and magnesium
B. Bacteria
C. Undesirable taste and odour
D. Its corrosiveness
Process conditions in fermentator used for production of penicillin is____________________?
A. 25°C, 2 atm
B. 90°C, 45 atm
C. 30°C, 200 mm Hg (absolute)
D. 50°C, l0 atm
Bromides contained in hot mother liquor is treated with ______________ during manufacture of bromine from sea water ?
A. NH3
B. Cl2
C. SO3
D. SO2
High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to__________________?
A. Facilitate fast filtration
B. Flocculate the impurities
C. Both A. and B.
D. Neither A. nor B.
Mannheim furnace is used in the manufacture of_________________?
A. Hydrochloric acid
B. Calcium carbide
C. H2SO4 by Chamber process
D. Corundum
Varnish does not contain____________________?
A. Pigment
B. Dryer
C. Thinner
D. Anti-skimming agent
Which of the following coals has the highest calorific value ?
A. Sub-bituminous
B. Lignite
C. Anthracite
D. Peat
Molecular weights of polymers are in the range of__________________ ?
A. 105 – 109
B. 102 – 102
C. 102 – 107
D. 109 – 1011
Finely ground calcium aluminate & silicate is a/an ____________________?
A. Abrasive
B. Cement
C. Cermet
D. Explosive
Chemical Environmental Engineering Mcqs
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. Methyl alcohol
C. Hydrochloric acid
D. Formic acid
The main component of Pyrex glass is_____________________?
A. Boron
B. Lead
C. Zinc
D. Selenium
Graphite is a/an________________________?
A. Electrical insulator
B. Moderator used in nuclear reactor
C. Allotrope of carbon
D. Both B. and C.
Calcination of limestone is not done in a ______________ kiln for producing lime ?
A. Rotary
B. Vertical shaft
C. Fluidised bed
D. Fixed bed
Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because__________________?
A. Tar neutralises the residual acids present in pitch
B. Its calorific value is very less
C. It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop
D. All A, B. and C.
The terminology ‘BTX’ used in coal tar distillation industry refers to___________________?
A. Benzol-toluene-xylene
B. Benzol-toluol-xylol
C. Benzene-toluol-xylol
D. Benzene-toluene-xylene
Pick out the endothermic reaction out of the following ?
A. CO + 3H2 = CH4 + H2O
B. C+ ½O2 = CO
C. CaCO3 = CaO + CO2
D. CO + ½O2 = CO2
Which of the following is the second major component of cement ?
A. CaO
B. SiO2
C. Al2O3
D. Fe2O3
Phosphate rock is a raw material for the manufacture of____________________?
A. Phosphorous
B. Phosphoric acid
C. Superphosphates
D. All A , B. and C
Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material ?
A. Glasses
B. Slag cement
C. Porcelain/Potteries
D. Teflon
Phosphoric acid is prepared from_____________________?
A. Chalcopyrite
B. Cryolite
C. Rock phosphate
D. None of these
Kaolin is a/an _____________________?
A. Refractory material
B. Artificial abrasive
C. Synthetic resin
D. Blue pigment
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 specific gravity of mercury
B. High cost of mercury
C. Non-availability of high purity mercury
D. Pollution of water stream by mercury
Builders are added in soap to act as___________________?
A. Cleaning power booster
B. Corrosion inhibitor
C. Anti-redeposition agent
D. Fabric brightener
Sucrose content in the raw juice extracted from sugar cane is about _________________ percent?
A. 50 – 60
B. 15 – 20
C. 1 – 2
D. 80 – 85
Mercury cells for caustic soda manufacture, compared to diaphragm cells___________________?
A. Require more power
B. Require lower initial investment
C. Produce lower concentration NaOH
D. None of these
Viscose rayon is chemically___________________?
A. Cellulose acetate
B. Regenerated cellulose nitrate
C. Cellulose nitrate
D. Regenerated cellulose acetate
High temperature carbonisation of coal takes place at __________________ °C?
A. 700
B. 2000
C. 1100
D. < 500
Gun powder, which is an explosive comprises of charcoal, sulphur and____________________?
A. Dynamite
B. Salt petre
C. Nitro glycerine
D. Glycerine
Neoprene is a__________________?
A. Polyester
B. Synthetic rubber
C. Monomer
D. None of these
The drug used in contraceptives is____________________?
A. Methyl salicylate
B. Mestranol
C. Sulfadiazine
D. Penicillin
Frasch process is for______________________?
A. Producing helium
B. Making oxygen
C. Mining sulphur
D. Making nitrogen
Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about _____________ °C ?
A. -103
B. -53
C. -183
D. -196
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. Sodium sulphate
B. Sodium chloride
C. Calcium sulphate
D. Magnesium chloride
Hard water____________________?
A. Pollutes the water stream
B. Is not unfit for drinking purpose
C. Does not affect the lather formation by soap
D. All A, B. and C
Nickel is not used as a catalyst in the____________________?
A. Shift conversion
B. Fischer-Tropsch process
C. Hydrogenation of oil
D. Ostwald’s process of HNO3 manufacture
Which is the most suitable dye for synthetic fibres ?
A. Acid dye
B. Pigment dye
C. Azoic dye
D. Mordant dye
______________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant ?
A. Pyrex
B. Lead
C. Soda lime
D. High silica