Compettive Chemical Engineering MCQs – New Chemical Process MCQs
This post is comprising of latest ” Chemical Process MCQs – Latest Competitive Chemical Engineering MCQs “. Here you’ll get latest chemical engineering mcqs for written test, interview with answers. If you want to improve your knowledge regarding chemical engineering then read these mcqs of Design of Steel Structures.
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:
Addition of calcium oxide to water produces___________________?
A. Hissing sound
B. Exothermic heat
C. Slaked lime
D. All A , B. & C
Pick out the wrong statement ?
A. Gun powder comprises of 75% salt petre, 15% charcoal and 10% sulphur
C. Lead azide is a popular military explosive
B. Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators
D. TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being
____________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia ?
A. Haber’s
B. Ostwald’s
C. Solvay
D. None of these
Dense soda ash used in the manufacture of glass, is chemically represented by__________________?
A. Na2CO3.10H2O
B. Na2CO3
C. Na2CO3.H2O
D. Na2HCO3
Which of the following is a detergent ?
A. Cellulose nitrate
B. Alkyl benzene sulphonate
C. Polytetrafluoroethylene
D. Benzene hexachloride
Coagulant is used _________________ filtration?
A. Before
B. During
C. After
D. To avoid
In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 ⇌ 2SO3), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO2 to SO3 can be increased by ?
A. Putting more quantity of V2O5 catalyst in the converter
B. Increasing the oxygen concentration
C. Removing some quantity of SO3 during intermediate stage
D. Maintaining low temperature & pressure in the converter
Calgon used in water treatment is chemically ____________________?
A. Calcium phosphate
B. Sodium hexametaphosphate
C. Sodium phosphate
D. Tricresyl phosphate
Caprolactam (a raw material for nylon-6 manufacture) is produced from ___________________?
A. Naphthalene
B. Phenol
C. Benzene
D. Pyridine
Pick out the wrong statement ?
A. Protein catalysts are called enzymes
B. Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye respectively
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%
The type of high refractive index glass used in optical instruments is _____________ glass?
A. Crookes
B. Flint
C. Pyrex
D. None of these
Nitrogen is an essential component of ____________________?
A. Carbohydrates
B. Mineral salts
C. Fats
D. Proteins
Fumigant insecticides___________________?
A. Emit poisonous vapour
B. Kill insects, when they eat it
C. Are absorbed throughout the plant
D. None of these
Oxidation of ortho-xylene in presence of ______________ catalyst is done to produce phthalic anhydride on commercial scale ?
A. Alumina
B. Vanadium
C. Nickel
D. Iron
Ca(OH)2 is called __________________?
A. Limestone
B. Slaked lime
C. Quicklime
D. Gypsum
Helium is produced on commercial scale from__________________?
A. Coke oven gas
B. Natural gas
C. Air
D. None of these
RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically____________________?
A. Cyclo trimethylene trinitramine
B. Cyclo tetramethylene tetranitramine
C. Trinitro resorcinol
D. Trinitrobenzene
Catalytic oxidation of naphthalene produces_______________?
A. Phenol
B. Styrene
C. Phthalic anhydride
D. None of these
Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils________________?
A. Cause cholesterol build up and blood clotting
B. Have affinity to retain harmful sulphur compounds
C. Always contain some amount of nickel (as their complete removal is very difficult)
D. Are prone to rancid oxidation
Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc ?
A. Caustic soda
B. Sodium borate
C. Sodium tripolyphosphate (STPP)
D. Sodium silicate
Pick out the wrong statement ?
A. Alkali consumption in digestion/cooking of bamboo is measured in terms of permanganate number
B. Fibrillation of fibre during paper manufacture is done to develop the strength in paper
C. Bagasse fibre contains both lignin & cellulose
D. Presence of sodium sulphate in pulp makes the pulp bleachability poor
Pick out the wrong statement ?
A. Pasteurisation of milk involves moderate heating followed by cooling
B. Enzyme is a complex nitrogenous compound
C. Bakeries and breweries make use of yeasts
D. Oils and fats are alkaloids
Fuels And Combustion Mcqs
Pick out the wrong statement?
A. Vitriol oil is nothing but technical sulphuric acid
B. The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with sulphur trioxide
C. Conversion of SO2 to SO3 in Monsanto-4 pass converter is about 98%
D. Decomposition of sulphuric acid on heating does not start before its boiling
Catalytic oxidation of naphthalene produces ?
A. Phenol
B. Styrene
C. Phthalic anhydride
D. None of these
Oils are partially hydrogenated (not fully) to manufacture Vanaspati , because fully saturated solidified oils ?
A. Cause cholesterol build up and blood clotting
B. Have affinity to retain harmful sulphur compounds
C. Always contain some amount of nickel (as their complete removal is very difficult
D. Are prone to rancid oxidation
Fats as compared to oils have ___________________?
A. Lower melting point
B. Less unsaturated glycerides of fatty acids
C. Much higher reactivity to oxygen
D. More unsaturated glycerides of fatty acids
Vinyl chloride (CH2 = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of __________________?
A. 4 kgf/cm2 & 500°C
B. 40 kg/cm2 & 200°C
C. 10 kgf/cm2 & 1000°C
D. 100 kgf/cm2 & 500°C
Calcareous & argillaceous materials are used in the manufacture of ___________________?
A. Carbon disulphide
B. Cement
C. Lead
D. None of these
Dichloro diphenyl ________________ is the full form of DDT (an insecticide) ?
A. Tetrachloromethane
B. Trichloroethane
C. Tetrachloroethane
D. Trichloromethane
Isopropyl benzene produced by alkylation of benzene with propylene is known as _________________?
A. Gelatin
B. Cumene
C. Neoprene
D. Mercaptans
Detergent is produced by the sulphonation of dodecyl benzene, which is an ________________ reaction
A. Endothermic
B. Irreversible
C. Exothermic
D. Both B. and C.
Fertilizer Technology Mcqs
Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively ?
A. Oxides of nitrogen & Cr2O3
B. V2O5 & Cr2O3.
C. V2O5 on a porous carrier & oxides of nitrogen
D. Oxides of nitrogen & V2O5 on a porous carrier
High temperature carbonisation of coal produces _____________________ ?
A. Less of gases compared to liquid products
B. Inferior coke compared to low temperature carbonisation
C. Larger quantity of tar compared to low temperature carbonisation
D. None of these
Which of the following is used as a coagulant in water treatment ?
A. Chlorine
B. Chloramine
C. Ferrous sulphate
D. Hydrogen peroxide
Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as ____________________ oil?
A. Semi-drying
B. Drying
C. Non-drying
D. None of these
Which of the following has sodium bicarbonate as its main constituent ?
A. Washing soda
B. Baking powder
C. Baking soda
D. None of these
Fermentation of molasses to produce ethyl alcohol is done at ________________ °C?
A. 20 – 30
B. 100 – 150
C. < – 5
D. 250 – 300
Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine ?
A. NaHCO3
B. Na2CO3
C. H2
D. None of these
Nylon-66 is manufactured from____________________?
A. Hexamethylene diamine and adipic acid
B. Caprolactam
C. Hexamethylene diamine and Maleic anhydride
D. Dimethyl terephthalate and ethylene glycol
Anion exchanger is regenerated usually with ____________________?
A. NaOH
B. Hydrazine
C. H2SO4
D. Alum solution
Low purity oxygen is used for____________________?
A. Cutting and welding of metals
B. L.D. steel making
C. Medicinal purposes
D. Chemical oxidation processes
Highly porous refractory bricks are ____________________?
A. Less susceptible to chemical attack by molten fluxes and gases etc
B. Having very high thermal conductivity
C. Very strong
D. None of these
The temperature in the calcium carbide furnace is _______________ °C ?
A. 700-850
B. 200-300
C. 2000-2200
D. 4000-4500
Sodium chloride content in sea water is about _______________ gms/liter?
A. 10
B. 2
C. 25
D. 50
Lindane is____________________?
A. A by-product of BHC manufacture
B. BHC (Benzene Hexachloride) containing 99% γ-isomer
C. Not a fumigant
D. Both B. and C.
Carboxymethyl cellulose (CMC) is added in detergents to act as a/an___________________?
A. Builder
B. Surfactant
C. Optical brightening agent
D. Anti soil redeposition agent
Kopper-Totzek coal gasifier_________________?
A. Can give ammonia synthesis gas (H2 + N2)
B. Cannot use coking coal
C. Is a moving bed reactor
D. Operate at very high pressure
Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about _____________ percent?
A. 50
B. < 10
C. > 30
D. 75
‘Synthesis gas’ meant for the synthesis of organic compound is a variable mixture of ____________________?
A. CO2 & H2
B. N2 & H2
C. CO & H2
D. C & H2
Starting raw material for the manufacture of Maleic anhydride is___________________?
A. Benzene
B. n-butene
C. Either A. or B.
D. Neither A. nor B.
Polyvinyl chloride (PVC) is____________________?
A. A condensation polymerisation product
B. A thermosetting material
C. Made by employing emulsion polymerisation
D. None of these
The basic difference between vegetable oils and fats is in their ___________________?
A. Chemical properties
B. Density
C. Physical state
D. Composition
Removal of dirt/soil by soaps or detergent does not involve the _______________ of soil ?
A. Dispersion
B. Emulsification
C. Precipitation
D. Wetting
Drinking (potable) water treatment does not involve __________________?
A. Sedimentation
B. Coagulation
C. Softening
D. Disinfection
Thorium is mainly used _______________?
A. For the manufacture of gas mantles
B. In the manufacture of hydrogen bomb
C. As a fissile fuel in a nuclear reactor
D. In the treatment of cancer
Which oil is preferred for paint manufacture ?
A. Drying oil
B. Non-drying oil
C. Semi-drying oil
D. Saturated oil
Pick out the wrong statement pertaining to nitric acid ?
A. About 90% of nitric acid is manufactured by Ostwald’s process
B. Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
C. It is a strong mono basic acid which reacts with almost all the metals except noble metals
D. Arc process of nitric acid manufacture is economical as compared to Ostwald’s process
Tall oil obtained as a by-product from the black liquor recovery is________________?
A. Composed mainly of rosin & fatty acids
B. Used in the manufacture of greases, emulsions & soaps
C. A black, sticky & viscous liquid
D. All A , B. & C.
Magnesium and calcium ______________ cause temporary hardness of water ?
A. Phosphates
B. Bicarbonates
C. Carbonates
D. Sulphates
Which of the following, when pyrolysed, produces Perchloroethylene ?
A. Chlorobenzene
B. Ethylene dichloride
C. Carbon tetrachloride
D. Chlorinated paraffin
Chemical Environmental Engineering Mcqs
Pick out the exothermic reaction out of the following ?
A. MgCO3 = MgO + CO2
B. CaC2 + H2O = Ca(OH)2 + C2H2
C. C + H2O = CO + H2
D. All (A), B. and (C)
______________ paper is used in the manufacture of newsprint paper ?
A. Ground-wood
B. Tissue
C. Board
D. Wrapping
Which of the following is the main constituent of the mother liquor produced in salt industry ?
A. Glauber’s salt
B. Quick lime
C. Salt petre
D. Bromine
Concentration of hydrogen peroxide is done by_____________________?
A. Atmospheric distillation
B. Vacuum crystallisation
C. Crystallisation
D. Dehydration
Bakelite is chemically known as_____________________?
A. Polybutadiene
B. Polyvinyl chloride (PVC)
C. Phenol formaldehyde
D. Polyurethane
Terylene is__________________?
A. A polyester
B. Same as Dacron
C. Both A. & B.
D. Neither A. nor B.
Unsaturated oils compared to saturated oils have___________________?
A. Lower melting point & higher reactivity to oxygen
B. Lower melting point & lower reactivity to oxygen
C. Higher melting point & higher reactivity to oxygen
D. Higher melting point & lower reactivity to oxygen
Production of one ton of dry paper pulp requires about ___________________ tons of bamboo or wood?
A. 5
B. 2.5
C. 1
D. 10
Wax is a___________________?
A. Liquid at room temperature
B. Mixture of esters of polyhydric alcohols excepting glycerine
C. Mixture of glycerides
D. Mixture of glycerides of fatty acids
Ordinary glass is not a/an_________________?
A. Supercooled liquid
B. Amorphous isotropic material
C. Material with sharp definite melting point
D. Electrical insulator
Hydrochloric acid is also known as_________________?
A. Strong organic acid
B. Muriatic acid
C. Oil of vitriol
D. Green acid
Higher viscosity index of a lubricating oil denotes_______________?
A. Less changes in fluidity of oil with temperature
B. Its unsuitability under varying temperature conditions
C. Substantially high change in fluidity of oil with temperature
D. None of these
Chloral is used in the manufacture of__________________?
A. DDT
B. Parathion
C. BHC
D. None of these
Reverse osmosis is normally used for the_______________?
A. Separation of helium from natural gas
B. Separation of isotopes of uranium from gaseous uranium hexafluoride
C. Desalination of brackish water to produce potable (drinking) water
D. Purification of oxygen
Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is ____________ °C?
A. 5 to 10
B. -5 to 0
C. 30 to 50
D. 75 to 80
Transparent soaps (e.g. Pears) are____________________?
A. Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency
B. Metallic soaps with frothing agent from which glycerine has not been recovered
C. Metallic soaps with frothing agent and free Stearic acid to achieve transparency
D. None of these
The biochemical treatment applied to sewage effluents is a process of__________________?
A. Reduction
B. Dehydration
C. Oxidation
D. Polymerisation
At very high concentration of enzymes, the rate of fermentation chemical reaction is _____________ the concentration of reactants?
A. Independent of
B. Inversely proportional to
C. Directly proportional to
D. Proportional to the square of
______________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace?
A. Quartz
B. Limestone
C. Bauxite
D. Manganese
Dry ice (solidified CO2) is used for the___________________?
A. Storage & shipment of frozen foods and ice-creams
B. Liquefaction of natural gas
C. Liquefaction of permanent gases
D. None of these
The catalyst used in shift converter is___________________?
A. Nickel
B. Silica gel
C. Vanadium
D. Alumina
CaO is called__________________?
A. Quick lime
B. Limestone
C. Slaked lime
D. Calcite
Use of chlorine in the treatment of sewage_________________?
A. Helps in grease separation
B. Causes bulking of activated sludge
C. Increases the biological oxygen demand (BOD)
D. Aids in flocculation
Superior quality laboratory apparatus is made of the _____________ glass having low thermal co-efficient of expansion & high chemical resistance?
A. Soda
B. Flint
C. Pyrex
D. Potash
Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulfonic acid produces sodium dodecylbenzene sulphate, which is a/an?
A. Soap
B. Explosive
C. Detergent
D. Analgesic drug
____________ is a polysaccharide?
A. Sucrose
B. Starch
C. Maltose
D. Glucose
A unit operation is exemplified by the process of ___________________?
A. Nitration
B. Desorption
C. Reduction
D. Combustion
Catalytic oxidation-dehydrogenation of methyl alcohol produces__________________?
A. Formaldehyde
B. Acetone
C. Phenol
D. Maleic anhydride
______________ is produced by the dehydrogenation of ethyl benzene ?
A. Styrene
B. Cumene
C. Ethyl alcohol
D. Phenol
Good quality of edible salt is obtained from brine by the process of__________________?
A. Freeze drying
B. Vacuum evaporation
C. Solar evaporation
D. Electrolysis
In primitive days, _____________ was being manufactured by Leblanc Process ?
A. Washing soda
B. Alum
C. Soda ash
D. Calcium carbide
Dehydrogenation of ethyl benzene produces __________________ ?
A. Styrene
B. Phenol
C. Naphthalene
D. Benzoic acid
Main use of hydrazine is___________________?
A. As a rocket fuel
B. As a disinfectant
C. In water treatment
D. As fire retardant
The function of gypsum addition during cement making is to_________________?
A. Increase the density of cement
B. Decrease the cement setting rate
C. Both A. and B.
D. Neither A. nor B.
Catalyst used in the hydrogenation of oil is_________________?
A. Nickel
B. Iron
C. Platinum
D. Alumina
The catalyst used in the production of elemental sulphur from H2S (by oxidation-reduction) is _____________________?
A. Alumina
B. Platinum
C. Silica gel
D. Nickel
10% oleum comprises of 10% free_________________?
A. H2SO3
B. SO2
C. SO3
D. H2SO4
______________ are added in lacquers to remove film brittleness and to improve adhereness?
A. Diluents
B. Plasticisers
C. Film forming materials
D. Solvents
DDT should not be allowed to come in contact with iron (during its manufacture) to _______________?
A. Avoid its decomposition
B. Achieve non-hygroscopic property
C. Prevent sulphonation of the monochlorobenzene by the acid catalyst
D. None of these
Which is the most efficient absorbent for SO3 out of the following ?
A. 65% oleum
B. 20% oleum
C. 78% H2SO4
D. 98% H2SO4