Chemical Engineering Basics MCQs – New Chemical Engineering MCQs

Chemical Engineering Basics MCQs – New Chemical Engineering MCQs

This post is comprising of latest ” Chemical Engineering Basics MCQs – Latest Competitive Chemical Engineering MCQs “. Here you’ll get latest mechanical engineering mcqs for written test, interview with answers. If you want to improve your knowledge regarding mechanical engineering then read these mcqs of Design of Steel Structures.

Latest Chemical Engineering MCQs

By practicing these MCQs of Chemical Engineering Basics MCQs – Latest Competitive Chemical Engineering MCQs , an individual for exams performs better than before. This post comprising of mechanical engineering objective questions and answers related to Chemical Engineering Basics Mcqs “. As wise people believe “Perfect Practice make a Man Perfect”. It is therefore practice these mcqs of mechanical engineering to approach the success. Tab this page to check “Chemical Engineering Basics Mcqs” for the preparation of competitive mcqs, FPSC mcqs, PPSC mcqs, SPSC mcqs, KPPSC mcqs, AJKPSC mcqs, BPSC mcqs, NTS mcqs, PTS mcqs, OTS mcqs, Atomic Energy mcqs, Pak Army mcqs, Pak Navy mcqs, CTS mcqs, ETEA mcqs and others.

Latest Chemical Engineering Basics Mcqs

The most occurred mcqs of Chemical Engineering Basics in past papers. Past papers of Chemical Engineering Basics Mcqs. Past papers of Chemical Engineering Basics 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 Engineering Basics Mcqs. The Important series of Chemical Engineering Basics Mcqs are given below:

The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge) ?

A. x-1.5
B. x0.8
C. x1.5
D. x-0.8

Exposure to _________________ accelerates the degradation of plastics?

A. Ultraviolet radiation
B. High ambient temperature
C. High atmospheric temperature
D. Damp atmosphere

Natural water contains approximately ______________ percent of heavy water?

A. 0.015
B. 1.2
C. 0.71
D. 3.5

If a solid is compressed adiabatically in its elastic range, its _____________ remains constant ?

A. Enthalpy
B. Internal energy
C. Entropy
D. Temperature

At absolute zero temperature, for any reaction involving condensed phases ?

A. Δ H° = 0 , Δ S° = 0
B. Δ G° = 0 , Δ H° = 0
C. Δ S° = 0 , Δ E° = 0
D. Δ S° = 0 , Δ Cp° = 0

Insulation of liquid surface can be achieved by _____________ on top of its surface?

A. Floating hollow polypropylene spheres
B. Putting cement
C. Spraying alumina powder
D. None of these

The activity co-efficient of the solute in a dilute solution ?

A. Increases with the increase of concentration of the solute
B. Decreases with the increase of concentration of the solute
C. Remains constant
D. Is unity at infinite dilution

_________________ property of a material is determined by the Herbert Pendulum device?

A. Hardness
B. Toughness
C. Tensile
D. Compressive

Pick out the wrong statement ?

A. Most of the hydrocarbons are non-polar
B. Generally, non-polar compounds are chemically inactive, conduct electricity poorly and do not ionise
C. Molecules with symmetrical arrangements (e.g. CH4 or CCl4) are non-polar
D. None of these

Which of the following material handling equipments is not suitable for moving materials in varying paths ?

A. Hand trolley
B. Belt conveyor
C. Truck
D. Crane

Joule-Thomson co-efficient is the ratio of________________?

A. Pressure change to temperature change occuring during adiabatic throttling of a gas
B. Pressure change to temperature change occuring during adiabatic compression of a gas
C. Temperature change to pressure change occuring during adiabatic compression of a gas
D. Temperature change to pressure change occuring during adiabatic throttling of a gas

Blasting of tri-nitro-toluene (TNT) is done by mixing it with ammonium_______________?

A. Nitrate
B. Carbonate
C. Sulphate
D. Chloride

Steels with high carbon equivalent have poor Weldability, because in these steels during welding________________?

A. Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld
B. Carbon and other alloying elements get oxidised from the weld pool
C. Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld
D. Segregation of carbon and other element occurs in the weld pool leading to poor properties of the weld

Chemical Heat Transfer Mcqs

Identify the false statement?

A. Martensitic steels are less susceptible to pitting corrosion than austenitic steels
B. Hydrogen embrittlement is facilitated by tensile stress
C. Pitting corrosion is usually very localised
D. Stress corrosion cracking is facilitated by tensile stress

Pick out the wrong statement?

A. In line and staff organisation, “line” executes and “staff directs
B. Line organisation is net suitable for expansion and growth of an industry
C. Complete unity of command exists in a line organisation
D. None of these

What happens, when SO2 is passed through a solution of H2S in water ?

A. Precipitation of sulphur takes place
B. Oleum is formed
C. H2SO3 is formed
D. None of these

Specific gravity of hot metal (pig iron) is ______________ times that of the blast furnace slag ?

A. 0.8
B. 3
C. 2
D. 6

When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the _________________?

A. Humidity is < 100% & dew point temperature of air has not reached
B. Partial pressure of water vapour is less than the total pressure
C. Dew point temperature of air has not reached & air is not saturated fully
D. Air is fully saturated

Which of the following pairs is not correctly matched ?

A. Uranium – 233 : Fertile material
B. Scattering: Absorption cross-section
C. Binding energy : Mass defect
D. Number of nucleons : Mass number

Constituents of stellite are ____________________?

A. Zinc, aluminium & nickel
B. Cobalt, chromium & tungsten
C. Zinc, copper & nickel
D. Nickel, cobalt & vanadium

Which of the following contributes maximum as main source of sulphur in the blast furnace charge ?

A. Iron ore
B. Coke
C. Sinter
D. Limestone

L.D. (Linz-Donawitz) converter is used in the production of____________________?

A. Zinc
B. Steel
C. Copper
D. Aluminium

More than 95% of _______________ is present in corundum ?

A. CaSiO2
B. Al2O3
C. SiO2
D. MgO

The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called__________________?

A. Resilience
B. Ductility
C. Toughness
D. Impact strength

For dynamic strain measurement, the Wheatstone bridge used is of ______________ type ?

A. Current sensitive deflected
B. Voltage sensitive deflected
C. Voltage sensitive null
D. None of these

A metal having a Poisson’s ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal strain = 0.8, then the magnitude of thickness strain is________________?

A. 0.8
B. -0.8
C. +0.08
D. -0.24

_________________ is not used as a material of construction in thermocouples ?

A. Rhodium
B. Alumel
C. Constantan
D. Duralumin

A material being tested for endurance strength is subjected to the _____________ load?

A. Dynamic
B. Completely reversed
C. Impact
D. Static & dynamic

Otto cycle used in spark ignition petrol engines is also known as the constant ________________ cycle?

A. Volume
B. Heat
C. Pressure
D. None of these

“Encyclopaedia of Chemical Technology” has been ____________________?

A. Edited by Perry and Chilton
B. Authored by Kirk Othmer
C. Edited by Kirk Othmer
D. Authored by Perry and Chilton

Optical activity is a/an _______________________ property ?

A. Constitutive
B. Additive
C. Both A. & B.
D. Neither A. nor B.

High endurance limit of carburised machine parts is because of the fact that carburisation __________________?

A. Enhances the yield point of the material
B. Suppresses any stress concentration produced in the parts
C. Introduces a compressive layer on the surface
D. Produces a better surface finish

Function of fusible plug in a boiler is to ______________________?

A. Guard the boiler in case of abnormal rise in steam pressure
B. Put off fire in the furnace when water level in the boiler falls to unsafe limit
C. Drain out water and sludge from the boiler during repair
D. All A, B. & C

The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the________________________?

A. Resilience
B. Ductility
C. Toughness
D. Impact strength

Nickel is a _________________ material?

A. Ferromagnetic
B. Paramagnetic
C. Semi-conductor
D. Ferroelectric

Which of the following are made out of the carbon steel having carbon content of 0.9 to 1%?

A. Small punches, broaches reamers and springs
B. Mandrels, twist drills, small lathe tools and razors
C. Cutlery, screws, rivets and files
D. Forgings like can shaft, structural steel plate, threading dies and drawing dies

An approximately _____________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section ?

A. Isentropic
B. Isothermal
C. Adiabatic
D. Isochoric

The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the _____________ point of the material?

A. Ultimate
B. Elastic
C. Yielding
D. Breaking

Pick out the wrong conversion of absolute & kinematic viscosities ?

A. 1 N.sec/m2 = 10 paise
B. 1 stoke = 1 cm2/sec
C. 1 stoke = 1 m2/sec
D. 1 m2/sec = 104 stokes

Which of the following has the highest modulus of elasticity (about 7 × 106 kg/cm2) ?

A. Stainless steel
B. High speed steel
C. Tungsten carbide
D. Superalloys

____________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength ?

A. Slugging
B. Shot peening
C. Lancing
D. Spinning

Chemical Reaction Mcqs

Air-petrol ratio in an automotive petrol engine is around ________________?

A. 14 : 1
B. 25 : 1
C. 22 : 1
D. 4 : 1

In ________________ process, there is an increase in entropy with no degradation of energy ?

A. Isothermal expansion
B. Polytropic expansion
C. Isochoric heat addition
D. Isobaric heat addition

Which of the following terminology is used for the temperature at which new grains are formed in a metal ?

A. Lower critical temperature
B. Eutectic temperature
C. Recrystallisation temperature
D. Upper critical temperature

______________ the exhaust gas is an indication of the incomplete combustion of fuel?

A. High temperature of
B. Low temperature of
C. High % of CO in
D. High % of CO2 in

While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterized by the ?

A. Low impact strength
B. Better finish and surface appearance
C. High flexibility
D. High plastic deformation

Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles (i.e., froth), which will hold the ore particles, but it does not affect the floatability of minerals. Which of the following is not used as a frother ?

A. Pine oil
B. Xanthaies
C. Cresylic acid
D. All A, B. & C.

Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be________________?

A. 9.5 : 1
B. 15.5 : 1
C. 12.5 : 1
D. 18.5 : 1

Which of the following phenomenon/ phenomena is/are diffusion controlled ?

A. Cross-slip
B. Dislocation climb
C. Twinning
D. Recrystallisation

Common salt is produced from sea water in India generally by the ________________ method?

A. Electrolytic
B. Solar evaporation
C. Freeze drying
D. None of these

The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K) ?

A. T
B. T2
C. 1/T
D. 1/T2

‘Flare tower’ used in industry is meant for_____________________?

A. Venting off (after burning) the excess inflammable/toxic gases at high pressure
B. Cooling of furnace exhaust gases
C. Absorbing the pollutant gases from the furnace exhaust
D. None of these

Solute atoms which cause yield point phenomenon in mild steel are/is_________________?

A. Boron
B. Aluminium
C. Carbon
D. Nitrogen

Heat required to raise the temperature of a body by 1 °C is called its_______________?

A. Heat capacity
B. Thermal conductivity
C. Specific heat capacity
D. Water equivalent

Liquor poisoning generally occurs due to the presence of _______________ in it?

A. Impurities
B. Ethyl alcohol
C. Methyl alcohol
D. Carbonic acid

In a boundary layer developed along the flow, the pressure decreases in the downstream direction. The boundary layer thickness in this case will _______________?

A. Increase rapidly
B. Increase gradually
C. Decrease gradually
D. Remain constant

In inventory control theory, the economic order quantity (EOQ) is the____________________?

A. Average level of inventory
B. Lot size corresponding to break even analysis
C. Optimum lot size
D. None of these

The co-ordination number in simple cubic structure is___________________?

A. 8
B. 6
C. 4
D. 12

Euler number is defined as the ratio of inertia force to _______________ force?

A. Pressure
B. Gravity
C. Elastic
D. Viscous

Energy to be supplied to the radioactive nucleus for the emission of a neutron is ________________ MeV?

A. 0.8
B. 200
C. 7.8
D. 10000

Ganister contains maximum percentage of_________________?

A. MgO
B. SiO2
C. FeO
D. MnO2

Triple point of water is__________________?

A. 0.01 °C
B. 0°K
C. 492°R
D. -273°C

Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30% ?

A. 9,100
B. 7,000
C. 13,000
D. 2,550

Holes for riveting purposes should be preferably made by________________?

A. Punching
B. Drilling
C. Cutting torch
D. None of these

Electrolytic reduction cell used for conversion of calcined Al2O3 to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to___________________?

A. Achieve very high purity of aluminium (99.9%)
B. Electrolytically dissociate alumina
C. Keep the electrolyte in liquid condition by the generation of heat
D. Both B. & C.

Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode________________?

A. Is exemplified by magnesium plate
B. Occurs higher in the electro-chemical series of metals
C. Is much cheaper than the cathodic base material to be guarded against corrosion
D. All A, B. & C.

______________ pipe is the most suitable for carrying sanitary drainage?

A. Reinforced cement concrete
B. Stainless steel
C. Cast iron
D. Asbestos cement

The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters in a thermal power plant boiler is the_______________?

A. Scale formation
B. Hydrazine addition during feed water treatment
C. Release of non-condensable gas from water in the boiler
D. Water alkalinity & leakage

Blow off cock is provided in steam boiler to ____________________?

A. Regulate the supply of water in boiler
B. Drain out water and sludge during its repair
C. Guard the boiler in case of abnormal rise in steam pressure
D. Put out the fire in the furnace when the water level in the boiler falls to unsafe limit

The efficiency of a Carnot heat engine operating between absolute temperatures T1 and T2 (when, T1 > T2) is given by (T1 – T2)/T1. The co-efficient of performance (CO.P.) of a Carnot heat pump operating between T1 and T2 is given by_________________?

A. T1/(T1-T2)
B. T2/(T1-T2)
C. T2/T1
D. T1/T2

Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in ______________ position ?

A. Vertical
B. Horizontal
C. Inclined
D. Any

Gross national product (GNP) means the total value of _______________ in a country ?

A. Goods produced
B. Taxes paid
C. Earning of the citizens
D. Gold reserve

Work study deals with the _______________ study?

A. Motion
B. Time
C. Both A. & B.
D. Neither A. nor B.

A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to____________________?

A. (Particle diameter)2
B. Particle diameter
C. √(Particle diameter)
D. (Particle diameter)3

In the acid Bessemer process, the hot metal should have the following composition ?

A. S < 0.05% and P < 0.05%
B. S 1.5%
C. S < 0.05% and P < 1.5%
D. S > 1.5% and P < 0.05%

Chemical Engineering Basics Mcqs

The ability of tool steel to resist softening at high temperatures is termed as __________________ hardness?

A. Extended
B. Red
C. Super
D. Extreme

Electrochemical corrosion can occur, only if ________________ is present in contact with metal?

A. Oxygen
B. Air
C. Liquid medium
D. Gaseous medium

Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part ?

A. Carburising
B. Tempering
C. Anodising
D. Annealing

Batch process is preferred over continuous process, when the___________________?

A. Same equipment cannot be used for several processes of the same nature
B. Sales demand of product is not steady
C. Product yields and quality cannot be achieved in continuous process, because of long residence time
D. All (A), B. & (C)

‘GASOHOL’ widely used in Brazil as a motor fuel is a mixture of alcohol and____________________?

A. Petrol
B. Light hydrocarbon gases (e.g. butane or propane)
D. None of these

Specific _________________ is a dimensionless quantity ?

A. Humidity
B. Heat
C. Weight
D. None of these

Dryness fraction of dry steam is_________________?

A. ∞
B. 0
C. 1
D. 0.5

Which of the following fastening devices has its both ends threaded ?

A. Set screw
B. Stud
C. Bolt
D. Split nut

Increase in temperature, in general results in the____________________?

A. Increase in the viscosities of both liquids & gases
B. Decrease in the viscosities of both liquids & gases
C. Increase in the viscosity of liquids and decrease in that of gases
D. Decrease in the viscosity of liquids and increase in that of gases

In case of a, centrifugal pump, the ratio h1/h2 is termed as the _____________ efficiency (where, h1 = actual measured head & h2 = head imparted to the fluid by impeller)?

A. Mechanical
B. Volumetric
C. Overall
D. Impeller

Hooke’s law_______________________?

A. Applies to elastic deformation
B. States that stress is inversely proportional to strain upto elastic limit
C. Applies beyond limit of proportionality in stress-strain curve
D. None of these

Nusselt number/Biot number varies___________________?

A. Inversely with thermal conductivity
B. Directly with thermal conductivity
C. Directly with heat transfer co-efficient
D. Inversely with the dimension of the solid

Pick out the wrong statement about coating/electroplating of metals ?

A. Phosphate coating is less corrosion resistant than chromate coating
B. Phosphate coating is used as an excellent base for paints & enamels
C. The base metal to be electroplated is normally made the cathode of the electrolytic cell and coating metal is made the anode
D. Calorising is the process of coating steel with chromium

In a furnace with heating element temperature at 1700°C, the dominant mechanism of heat transfer will be__________________?

A. Natural convection
B. Radiation
C. Conduction
D. Forced convection

A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in _______________ electrons ?

A. Decrease in
B. Excess of
C. Lack of free
D. None of these

Cupola produces _________________ iron?

A. Wrought
B. Cast
C. Pig
D. Carbon free

Screws are specified by their _____________ diameters?

A. Pitch
B. Major
C. Minor
D. None of these

Electrometallurgy is not involved in the extraction of ___________________ from its ore?

A. Aluminium
B. Lead
C. Tin
D. Both B. & C.

Mho’s scale of hardness, which consists of 10 standard minerals is used for the measurement of _______________ hardness?

A. Scratch
B. Dynamic
C. Indentation
D. Rebound

The bank of tubes located at the back of the domestic refrigerators are the _______________ tubes?

A. Evaporator
B. Refrigerant cooling
C. Condenser
D. Throttling

With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and _____________ is not affected ?

A. Impact strength
B. Hardness
C. Percent elongation
D. Both B & C

Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which _____________ with increase in the pressure of steam?

A. Decreases
B. Remain same
C. Increases
D. May increase or decrease

Pick out the wrong statement about nucleate boiling ?

A. Surface temperature is greater than the saturation temperature of the liquid
B. Bubble generation is by expansion of entrapped gas/vapour at small cavities in the surface
C. Heat transfer from the surface of the liquid is less than that in film boiling
D. The temperature is less than that of film boiling

Which of the following can be manufactured using powder metallurgy techniques ?

A. Brake linings
B. Carbide tool tips
C. Bearings
D. All A, B and C

______________ is not used as the control rod material in a nuclear reactor ?

A. Cobalt
B. Cadmium
C. Hafnium
D. Boron

Chemical Engineering Basics MCQs – New Chemical Engineering MCQs

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