Latest Competitive Chemical Engineering MCQs – Chemical Engineering Basics MCQs

Latest Competitive Chemical Engineering MCQs – Chemical Engineering Basics 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:

Steel is welded using the ________________ flame ?

A. Oxidising
B. Neutral
C. Carburising
D. All A, B. & C

________________ is a special constituent of chlorophyll without which photosynthesis is not possible ?

A. Phosphorous
B. Nitrogen
C. Calcium
D. Hydrogen

The highest stress that a material can withstand for a specified length of time without excessive deformation is called the ____________ strength ?

A. Creep
B. Fatigue
C. Endurance
D. None of these

Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of _______________ gms of zinc per m2 of steel strip ?

A. 1000-1500
B. 5-10
C. 120-500
D. 1500-3000

Two wires of the same radius & material having length in the ratio of 1 : 2 are stretched by the same force. The strain produced in the two wires will be in the ratio of__________________?

A. 1 : 1
B. 2 : 1
C. 1 : 2
D. 1 : 4

Force between the molecules of the same substance is called ______________________ force?

A. Molecular
B. Cohesive
C. Adhesive
D. Vander Walls

Quartz is a ________________ material ?

A. Ferromagnetic
B. Diamagnetic
C. Ferroelectric
D. Piezoelectric

The majority charge carriers in p-type silicon are______________________?

A. Ions
B. Free electrons
C. Conduction electrons
D. Holes

Which of the following is the most suitable abrasive for grinding high tensile strength materials ?

A. Corundum
B. Silicon carbide
C. Aluminium oxide
D. Boron carbide

The noble metals________________

A. Do not resist corrosion very strongly
B. Are exemplified by Na, K and Li
C. Are the lowermost in the electro-chemical series of metals
D. None of these

Unit of surface tension in S.I. unit is_________________?

A. Newton/m2
B. Joule/m2
C. Watt/m
D. Joule/m

Co-efficient of performance of a Carnot cycle refrigerator operating between – 23°C and + 27°C is ________________?

A. 0.5
B. 5
C. 3
D. 1.5

Lead is poured into the joint between two _______________ pipes ?

A. Concrete
B. Mild steel
C. Cast iron
D. Asbestos cement

______________ circuit is most commonly used to measure strain with the help of a strain gauge?

A. Simple current sensitive
B. Voltage balancing potentiometric
C. Ballast
D. None of these

Basic open hearth furnace (BOF) is not used for producing ______________ steel?

A. Rimming
B. Killed
C. High alloy
D. None of these

Laser is a device to produce___________________?

A. Microwaves
B. Gamma rays
C. A beam of white light
D. A beam of coherent light

Which of the following is the most wear resistant grade of carbide used for the cutting tools ?

A. Nickel carbide
B. Tungsten carbide
C. Aluminium carbide
D. Iron carbide

Thermal efficiency of an internal combustion engine is around ______________ percent?

A. 65
B. 35
C. 8
D. 80

Hydrogen in liquid steels is dissolved_________________?

A. As tiny gas bubbles
B. In the ionic form
C. In the atomic form
D. In the molecular form

Nickel and ______________ are the alloying element added in steel to increase its toughness?

A. Chromium
B. Molybdenum
C. Vanadium
D. Silicon

The lightest non-inflammable gas is_________________?

A. Ar
B. He
C. H2
D. O2

The surface tension of a liquid, at critical temperature is____________________?

A. Infinity
B. Zero
C. Indeterminate
D. Same as that at any other temperature

‘Amortization’ in respect of financial obligation of a company means the_____________________?

A. Liquidation of financial obligations on instalment basis
B. Modernisation of the plant equipments
C. Liquidation of all the obsolete equipments of the company
D. Commitment of financial obligation on priority

The same volume of all gases is representative of their_____________________?

A. Densities
B. Specific gravities
C. Gas characteristic constants
D. Molecular weights

The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the _____________ of the slag ?

A. Fluidity
B. Acidity
C. Basicity
D. Viscosity

For infinite parallel planes having emissivities ε1 & ε2, the interchange factor for radiation from surface 1 to surface 2 is given by__________________?

A. (ε1 + ε2)/ε1.ε2
B. ε1.ε2/(ε1 + ε2 – ε1.ε2)
C. ε1 + ε2
D. ε1.ε2

Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of ________________?

A. Cloth
B. Paper
C. Lead
D. Aluminium

Which of the following is an unconventional source of energy ?

A. Hydroelectric power
B. Thermal power
C. Nuclear-fusion power
D. Solar power

Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of ______________ will facilitate the most accurate measurement of the temperature ?

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

Silicon in steel__________________?

A. Increases its electrical resistivity and decreases the hysteresis loss
B. Makes it usable in almost all magnetic circuits where alternating current is used
C. Is present upto 5% & 4% respectively when used in transformers & motor armatures
D. All ‘A’, ‘B’ & ‘C’

Super heating of steam is done at constant___________________?

A. Entropy
B. Enthalpy
C. Pressure
D. Volume

Corrosion is____________________?

A. Same as erosion
B. A chemical phenomenon
C. A physical phenomenon
D. An uncontrollable phenomenon

Which of the following phenomenon will exhibit the minimum heat transfer ?

A. Forced convection in air
B. Boiling
C. Free convection in air
D. Conduction in air

Which of the following metals cannot be hot worked at room temperature ?

A. Lead
B. Nickel
C. Zinc
D. Tin

Which of the following equipments is used for liquid dispersion ?

A. Wetted wall column
B. Venturi scrubber
C. Bubble cap plate column
D. Packed column

Limestone is added in the blast furnace (during pig iron manufacture) to______________________?

A. Form slag by combining with impurities
B. Supply heat by undergoing exothermic reaction with impurities
C. Reduce slag viscosity
D. Reduce the coke consumption

Chemical Engineering Basics Mcqs

The boiling & freezing points on a newly defined temperature scale in degree ‘D’ are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to _____________ °D ?

A. 180
B. 140
C. 240
D. 280

Difference at any instant between the value of the controlled variable and the set point is called the__________________?

A. Deviation
B. Error ratio
C. Derivative time
D. Differential gap

Cementite is in the lamellar form in the _____________________ phase of steel ?

A. Bainitic
B. Martenistic
C. Pearlitic
D. Ferritic

Brazing is the joining of metals_____________________?

A. With a non-ferrous filler
B. Without melting the base metal
C. Both A. & B.
D. Neither A. nor (B)

Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of_________________?

A. Briquettes
B. Pellets
C. Lumps
D. Sinter

Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be_____________________?

A. 5
B. 2.5
C. 1.25
D. 3.75

Which of the following low melting alloy containing bismuth and lead is used for electric fuse ?

A. Wood’s metal
B. Monel metal
C. Babbitt metal
D. Duralumin

Carbide tipped cutting tools are manufactured by powder metallurgy techniques and have a composition of_____________________?

A. 90% tungsten carbide and 10% cobalt
B. 30% nickel, 15% chromium & 55% tungsten
C. 70% aluminium oxide & 30% silica
D. 65% tungsten & 35% zirconium

The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the___________________?

A. Final control element
B. Floating control action
C. On-off control
D. None of these

The substance used as a smoke screen in warfare is___________________?

A. P2O5
B. SiCl4
C. C2H2
D. PCl5

Increasing sulphur content in pig iron tends to make it ________________?

A. Tough
B. Hard
C. Soft
D. Ductile & malleable

Fahrenheit and Centigrade scales have the same readings at _____________________?

A. -33°
B. -40°
C. -55°
D. -58°

For separating small pieces of metal from engine oil of a car, the best separating technique is the _____________________ ?

A. Evaporation
B. Chromatography
C. Filtration
D. Fractional distillation

In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet ?

A. Alumina
B. Zirconia
C. Bakelite
D. Tungsten carbide

In TIG welding, thoriated tungsten electrodes are used, because it ____________________?

A. Has higher current carrying capacity
B. Has better electron emissivity
C. Is easy to prepare
D. Is stronger than ordinary tungsten

The expected efficiency of a single riveted lap joint is of the order of 50%. If the thickness of the plate is increased four times, then the rivet diameter will have to be increased ___________________ times ?

A. Two
B. Six
C. Four
D. Eight

A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material ?

A. Steel
B. Rubber
C. Glass
D. Brass

The dimensional formula of bulk modulus of elasticity is same as that of the ____________________?

A. Pressure
B. Force
C. Density
D. None of these

Working of linear variable differential transducer (LVDT) is based on the principle of variable_____________________?

A. Resistance
B. Capacitance
C. Mutual inductance
D. None of these

A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson’s ratio of the rod is___________________?

A. 0.33
B. 0
C. 0.44
D. 0.25

Which of the following metals is the most prone to work hardening ?

A. Brass
B. Copper
C. Aluminium
D. Lead

Wavelength of radiation emitted by a body depends on the ________________ of its surface?

A. Temperature
B. Nature
C. Area
D. All ‘A’, ‘B’ & ‘C’

A pycnometer is used for the measurement of________________________?

A. Composition of alloys
B. Specific gravity of a liquid
C. Flow rate of molten metal
D. Concentration of a solution

Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot_____________________?

A. Drawing
B. Spinning
C. Piercing
D. Extrusion

Metal shots used in shot blasting are made of ______________________?

A. Bronze
B. Steel
C. Stellite
D. Lead

Inertial forces are obtained, when the elastic forces are multiplied by ______________ number?

A. Mach
B. Reynolds
C. Froude
D. Euler

Dephosphorization of molten pig iron is favoured by_______________________?

A. Oxidising and neutral slag
B. Reducing and basic slag
C. High activity co-efficient of phosphorous in metal
D. Oxidising and basic slag

To improve the machinability of steel, it is generally subjected to _____________________?

A. Spheroidising
B. Normalising
C. Tempering
D. Annealing

For a spontaneous natural process at constant temperature and pressure, the free energy of the system always____________________?

A. Increases
B. Remain constant
C. Decreases
D. Increases to a maximum before decreasing

Oxyacetylene reducing flame is used while carrying out welding on___________________?

A. Grey cast iron
B. Alloy steel
C. Mild steel
D. High carbon steel

__________________ stress cannot be sustained by a fluid in equilibrium ?

A. Shear
B. Compressive
C. Tensile
D. None of these

Out of the following, which will fracture most readity, when hit with a hard hammer ?

A. Bronze
B. Brass
C. German silver
D. Cast iron

The yield point phenomenon observed in annealed low carbon steel is due to the presence of the following element ?

A. Phosphorous
B. Carbon
C. Silicon
D. Chromium

Ferromagnetic materials owe their properties to __________________ inner sub-shells ?

A. Equally filled
B. Partially filled
C. Completely filled
D. Vacant

Water-tube boiler is the one, in which _____________________?

A. Water passes through tubes and flue gases around it
B. Tubes are placed in vertical position
C. Tube carrying hot flue gases are immersed in a pool of water
D. None of these

The refrigerant freon-12 is chemically_______________________?

A. CCl2F2
B. CClF3
C. CCl3F
D. CCl4F

Eutectoid composition of carbon steel at room temperature is___________________?

A. Martensite
B. Pearlite
C. Cementite
D. Ferrite

Larger length & diameter water pipes are made by____________________?

A. Die casting
B. Electrical resistance welding
C. Semi-centrifugal casting
D. Continuous casting

Which of the following is an acidic constituent of B.F. slag ?

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

Addition of _____________________ to steel does not impart hardness?

A. Chromium
B. Copper
C. Nickel
D. Silicon

M10 index of coke indicates its____________________?

A. Hardness
B. Compressive strength
C. Abrasion resistance
D. Impact strength

Dislocations are _______________ defects?

A. Volume
B. Line
C. Point
D. None of these

Which of the following is not an ore of copper ?

A. Cryolite
B. Chalcopyrite
C. Azurite
D. Malachite

A common disinfectant used in village wells for disinfection of water is __________________?

A. Bromine
B. Free chlorine
C. Iodine
D. Potassium permanganate

A spring material should have low__________________?

A. Deflection value
B. Elastic limit
C. Fatigue resistance
D. None of these

Maximum permissible sulphur content in steel is ______________ percent ?

A. 0.015
B. 0.505
C. 0.055
D. 0.805

_______________ has a negative co-efficient of linear expansion?

A. Rubber
B. Copper
C. Iron
D. Nickel

Which of the following is a commonly used manometric liquid for low pressure range ?

A. Glycerol
B. Carbon tetrachloride
C. Ethyl alcohol
D. Ethylene glycol

The ratio of the shear stress to the principal stress on a principal plane is______________________?

A. 0
B. 1/2
C. 1
D. 1/3

Machinability of hard alloys and tool steels is improved by_____________________?

A. Tempering
B. Annealing
C. Spheroidising
D. Normalising

Runge-Kutta method is used to solve a/an __________________________?

A. Linear differential equation
B. Simultaneous non-linear equation
C. Ordinary differential equation of nth order
D. None of these

_______________ is the trade name assigned to a non-ferrous cast alloy composed of cobalt, chromium & tungsten ?

A. Stellite
B. Cermet
C. High speed steel
D. Alnico

The minimum carbon content in steel should be ____________________ percent for it to respond to a hardening treatment ?

A. 0.2
B. 0.6
C. 0.4
D. 0.8

Which one of the following is incombustible ?

A. S
B. CCl4
C. C2H2
D. H2

As the fluid flow rate increases, the float of the Rotameter____________________?

A. Rises in the tube
B. Rotates at lower speed
C. Rotates at higher speed
D. Drops down in the tube

High speed steel tools retain their hardness upto a temperature of __________________ °C?

A. 750
B. 500
C. 900
D. 1100

Transformation range for ferrous material is the temperature interval during which ___________________ is formed during its heating?

A. Martensite
B. Austenite
C. Cementite
D. Pearlite

Which of the following is not a charge material for cupola ?

A. Iron scrap
B. Limestone
C. Iron ore
D. Pig iron

Sudden fall of atmospheric pressure by a large amount is an indication of the_____________________?

A. Cold wave
B. Rain
C. Storm
D. Fair weather

_____________________ of grey cast iron produces white cast iron?

A. Rapid cooling
B. Rapid heating
C. Tempering
D. Slow cooling

Stainless steel is welded with difficulty because of____________________?

A. Chances of cracking
B. Its high melting temperature
C. Oxide film formation
D. Chromium carbide formation

The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding _______________ grinding wheel is normally used ?

A. Soft
B. Hard
C. Silicon carbide
D. Aluminium oxide

What is the value of entropy at 273°K ?

A. 0
B. ∞
C. 1
D. None of these

Vernier calipers cannot be used to measure the______________________?

A. I.D. & O.D. of the shaft
B. Depth of holes
C. Thickness of parts
D. Clearance between two mating surfaces

Latest Competitive Chemical Engineering MCQs – Chemical Engineering Basics MCQs

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