Competitive Chemical Engineering MCQs – Latest 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
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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:
Which of the following is not an explosive ?
A. RDX
B. CMC
C. TNT
D. Lead azide
The most important consideration in value engineering is the_____________________?
A. Cost reduction
B. Customer satisfaction
C. Profit maximisation
D. Process improvement
__________________ fluid force is not considered in the Navier-Stokes equation?
A. Turbulent
B. Gravity
C. Viscous
D. Pressure
Auto collimator is used to check____________________?
A. Roughness
B. Angle
C. Rotor balancing
D. Flatness
____________________ are normally subjected to sub-zero treatment?
A. Cold rolled sheets
B. Gauges or precision parts
C. Highly stressed parts
D. Non machinable materials
Steel balls are manufactured by_____________________?
A. Casting
B. Sintering
C. Cold heading
D. Spinning
In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that ?
A. Maintaining vacuum on tube side is more difficult than that on the shell side
B. Compared to the mass flow rate of cooling water, the rate of condensation of steam is invariably smaller
C. Water velocity can be increased conveniently to increase the overall heat transfer co-efficient because of its lower specific volume compared to steam
D. Condenser can act as a storage unit for condensed steam
Wood is a/an ______________ material ?
A. Homogeneous
B. Cellular
C. Amorphous
D. Granular
Which of the following gives the correct sequence of flow of the flue gases through the above mentioned boiler accessories ?
A. D, C, B, A
B. D, B, C, A
C. A, C, B, D
D. D, A, B, C
Induced draft fans provided in large thermal power plant boilers have __________________ blades?
A. Double curved
B. Backward curved
C. Forward curved
D. Radial or straight
In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.) ?
A. t = 15 – 0.0065 h
B. t = 0.0035 h – 15
C. t = 15 + 0.0065 h
D. t = 15 – 0.0035 h
Work done by a/an _________________ process is determined by ∫p. dv ?
A. Isothermal
B. Quasi-static
C. Adiabatic
D. Isentropic
Use of economiser in a boiler plant reduces the fuel consumption for steam generation by about _______________ percent ?
A. 30
B. 10
C. 1
D. 50
The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is__________________?
A. Chrome
B. Magnesite
C. Silica
D. Fireclay
______________________ temperature remains constant during adiabatic saturation process of unsaturated air ?
A. Dry bulb
B. Dew point
C. Wet bulb
D. None of these
Chemical Reaction Mcqs
Resilience of a bolt can be increased by increasing its __________________?
A. Length
B. Head diameter
C. Shank diameter
D. None of these
Maximum permissible air velocity in pipelines is about ______________ metre/second ?
A. 20
B. 10
C. 5
D. 40
Which of the following is not the commercial name of poly-methyl-methacrylate (PMMA) ?
A. Styrofoam
B. Perspex
C. Lucite
D. Plexiglass
Elimination of brittleness resulting from welding of saw blades is done by __________________ of the welded portion ?
A. Annealing
B. Work hardening
C. Toughening
D. Tempering
In a neutral solution__________________?
A. OH- ions are absent
B. H+ ions are absent
C. Both H+ and OH- ions are present in very small but equal concentration
D. None of these
At 100% relative humidity, the dew point temperature of moist air is_________________?
A. Equal to the wet bulb temperature
B. More than the wet bulb temperature
C. Less than the wet bulb temperature
D. Equal to the ambient temperature
____________________ of hard alloy and tool steel is done to make it easily machinable ?
A. Normalising
B. Tempering
C. Case carburising
D. Annealing
In the Bayer’s process, bauxite is digested under pressure using ___________________?
A. NH3
B. NaOH
C. H2SO4
D. HCl
Closeness of packing is maximum in case of ____________________ crystal lattice?
A. Face centred
B. Body centred
C. Simple cubic
D. None of these
Brittleness induced due to the presence of sulphur in steel can be reduced by adding______________?
A. Manganese
B. Vanadium
C. Magnesium
D. Copper
For a thermodynamic system undergoing a process, which of the following pairs best expresses the relationship similar to that expressed by the pressure volume plot ?
A. Temperature – entropy
B. Enthalpy – entropy
C. Temperature – pressure
D. Enthalpy-pressure
The hardenability of steel decreases with__________________?
A. Increase in strength
B. Increase in solutionising temperature
C. Decrease in dislocation density
D. Decrease in grain size
Diamagnetic materials___________________?
A. Can be magnetised in one direction only
B. Are non-magnetic and cannot be magnetised
C. Are magnetised in direction opposite to the magnetic field
D. Are magnetised by eddy currents only
What is the value of included angle of a triangular notch for maximum discharge ?
A. 60°
B. 30°
C. 90°
D. 120°
Which of the following is a boiler accessory i.e., not a boiler mounting ?
A. Feed check valve
B. Blow off cock
C. Feed water pump
D. Stop valve
The most important requirement for aluminium industry is the availability of cheap _______________?
A. Labour
B. Electrical power
C. Ore
D. Abundant water
Steel containing low percentage of nickel, chromium & tungsten are termed as the _____________ steel ?
A. Tool
B. Wrought
C. Alloy
D. Plain carbon
Materials having resistivity ranging from 1 to 100 ohm. cm is termed as___________________?
A. Insulator
B. Conductor
C. Semi-conductor
D. None of these
Plasma is_____________________?
A. Formed at very low temperature
B. Nothing but ionised gas
C. A source of steady and highest controllable pressure
D. A high temperature neutral gas
Heat flow across a hollow sphere of inner radius ‘r1’ and outer radius ‘r2’ is directly proportional to__________________?
A. (r2 + r1)/r1. r2
B. r1. r2/(r2 – r1)
C. (r2 – r1)/r1. r2
D. r1. r2/(r2 + r1)
Tempering of a material does not improve its____________________?
A. Machinability
B. Internal stress level
C. Toughness
D. Softness
In connection with corrosion of metals, passivation is the process that__________________?
A. Changes the composition of the metal
B. Intensifies deterioration
C. Inhibits further deterioration
D. None of these
On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the ______________ of the input signal?
A. Frequency
B. Damping
C. Amplitude
D. None of these
Which of the following forces does not act on a fluid at rest ?
A. Viscous force
B. Hydrostatic force
C. Gravity force
D. Surface tension force
Cold cracking in the heat affected zone of a high strength steel weld can take place because of the___________________?
A. Relatively high sulphur content in the base metal
B. Martensite formation
C. Retained austenite
D. Sufficient hydrogen present in the welding arc
Moist climate is the most favourable factor in the site selection far a_________________?
A. Petroleum refinery
B. Textile factory
C. Steel plant
D. Coke oven battery
Chemical Heat Transfer Mcqs
The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is__________________?
A. More
B. Same
C. Less
D. More but less than the diameter of bolt
Powder metallurgy is used to produce__________________?
A. Components of large size
B. High precision components with complex cavities and sharp features
C. Porosity free components
D. Components of such alloys whose constituents do not form alloys readily
Primary designation of steel is based on its__________________?
A. Carbon content
B. Hardness & tensile strength
C. Iron content
D. Alloying elements content
Wohler test is a destructive test to find out the ___________________ strength of a prepared metal specimen ?
A. Endurance
B. Fatigue
C. Creep
D. Tensile
The temperature at which ferromagnetic material can no longer be magnetized by the outside forces, is termed as the____________________?
A. Inversion temperature
B. Curie temperature
C. Critical point
D. Eutectic temperature
The two elements required to form substitutional solid solution should not have___________________?
A. Same valency
B. Same crystalline structure
C. Widely differing electronegativity
D. Same atomic sizes
____________ test is the appropriate test to determine whether a material is ductile or brittle ?
A. Impact
B. Hardness
C. Cupping
D. Tensile
Fire refining process is employed in case of___________________?
A. Zinc
B. Copper
C. Tin
D. Aluminium
In chemical dehumidification of air___________________?
A. Both specific humidity & dry bulb temperature decreases
B. Both specific humidity & dry bulb temperature increases
C. Specific humidity decreases & dry bulb temperature increases
D. Specific humidity increases & dry bulb temperature decreases
Gage pressure within a spherical droplet of a fluid is ‘p’. What will be gage pressure within a bubble of the same size & of the same fluid ?
A. 0.5 p
B. 2 p
C. p
D. 0.25 p
One ton of refrigeration is not equivalent to the heat removal rate of ____________________?
A. 50 kcal/minute
B. 200 BTU/minute
C. 50 kJ/sec
D. 3.5 KW
Which of the following commonly used condenser tube materials has the lowest thermal conductivity ?
A. Aluminium brass
B. Stainless steel
C. Admiralty brass
D. Titanium
Change in volume of metals from absolute zero temperature to their melting points is___________________?
A. Almost same for all metals
B. Less for low melting point metals
C. Different for different metals
D. Less for high melting point metals
Suitability of steel for its use in cable is judged by its strength in__________________?
A. Tension
B. Torsion
C. Compression
D. Shear
Faraday’s law of electrolysis is related to the____________________?
A. Atomic number of the cation
B. Cation speed
C. Equivalent mass of the electrolyte
D. None of these
Thermodynamic cycle involved in the working of a thermal power plant is the ______________ cycle ?
A. Carnot
B. Joule
C. Rankine
D. Brayton
Gantt charts are used for streamlining the__________________?
A. Sales forecasting
B. Production schedule
C. Inventory control
D. Quality control
The heat treatment to which the steel wire containing > 0.25% carbon is subjected to is___________________?
A. Bright annealing
B. Full annealing
C. Patenting
D. None of these
A jig is used while __________________ a hole?
A. Counter boring
B. Boring
C. Drilling
D. Enlarging
The product (s) of roasting of a sulphide ore is (are) ?
A. Oxide only
B. Oxide and sulphate
C. Sulphate only
D. Dependent on temperature and partial pressure of oxygen & sulphur dioxide
Glycerine is used as a coolant in cooling of some engines instead of water, because___________________?
A. Its higher boiling point (290°C) increases its heat carrying capacity
B. Smaller radiator can be used
C. Comparatively less weight of coolant is required
D. All a, b & c
Alloy powder manufactured by the following process have spherical shapes ?
A. Electrochemical deposition
B. Mechanical attrition
C. Atomisation
D. Gaseous reduction
Moist air is cooled along the line of constant ________________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs ?
A. Relative humidity
B. Enthalpy
C. Wet bulb temperature
D. Dew point temperature
Rankine cycle comprises of two isothermal and two ___________________ processes?
A. Polytropic
B. Isobaric
C. Isentropic
D. None of these
According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear stress is equal to _______________ times the yield stress ?
A. 0.5
B. √2
C. 2
D. √3/2
Enzymes belong to the category of_____________________?
A. Proteins
B. Vitamins
C. Carbohydrates
D. Fats
Dielectric___________________?
A. Is an electrical insulating material
B. Should have high thermal conductivity
C. Of low resistivity is preferred
D. Need not defy the corrosive action of chemicals
Which of the following emissions in the exhaust gas of an I.C. engine causes the formation of photochemical smog ?
A. Hydrocarbons
B. Nitrogen oxides
C. Both A. & B.
D. Carbon monoxide
Dry saturated steam can be converted into super heated steam by____________________?
A. Forcing it downwards through a vertical tube
B. Passing it through a pressure reducing valve
C. Increasing its cross-sectional area of flow
D. None of these
Ultimate strength in tension as compared to that in shear for steel is____________________?
A. One third
B. Half
C. One and half times
D. One fourth
Fatigue resistance of a material is measured by the _____________________?
A. Ultimate tensile strength
B. Elastic limit
C. Young’s modulus
D. Endurance limit
The Al2O3 content of cryolite in Hall-Heroult cell is maintained between _______________ percent ?
A. 2-5
B. 12-15
C. 18-20
D. 6-12
Hot working of lead is carried out at ___________________?
A. 150°C
B. 373°K
C. 75°C
D. Room temperature
The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed as the________________?
A. Creep strength
B. Fatigue strength
C. Resilience
D. Endurance limit
In case of water (Prandtl number ≈ 6) flowing over a flat plate heated over the entire length, the thermal boundary layer thickness as compared to hydrodynamic boundary layer thickness is ?
A. Less
B. Equal
C. More
D. Unpredictable
Chemical Engineering Basics Mcqs
Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at________________?
A. 0°K
B. Zero pressure
C. High vacuum
D. Earth’s centre
Which of the following is the largest quantum of pressure ?
A. 1 bar
B. 1 kg/cm2
C. 1 atmosphere
D. 1 kilo Pascal
Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an ______________ body?
A. Grey
B. Opaque
C. Black
D. White
Super conduction in metals is observed at a temperature of ________________ °K?
A. About 273
B. >100
C. <100
D. About 373
The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the ‘Curie temperature’. Its value for cobalt is ______________ °C?
A. 1359
B. 1127
C. 768
D. 1480
The product out from a cupola is called ____________________?
A. Pig iron
B. Wrought iron
C. Cast iron
D. None of these
In the blast furnace, incorporation of water vapour in the blast gives the following effect ?
A. Increases the reducing potential of the gas
B. No significant change occurs
C. Increases the flame temperature
D. Increases the hydrogen content in the metal
With increase in impurities in metals, their corrosion resistances____________________?
A. Remain same
B. Decrease
C. Increase
D. May increase or decrease; depending on the type of metal
______________________ iron is produced by the annealing of white cast iron?
A. Malleable
B. Ductile
C. Nodular
D. Grey
While the bin cards are used in the effective stores management, the queuing theory is associated with the _______________ time ?
A. Waiting
B. Inspection
C. Idle
D. Tool replacement
Baffles provided on the shell side of a shell and tube heat exchanger are meant for _____________________?
A. Improving heat transfer
B. Providing support for the tubes
C. Both A & B
D. Preventing the fouling of tubes & stagnation of shell side fluid
Which of the following alloying elements is present in maximum percentage in high speed steel ?
A. Molybdenum
B. Tungsten
C. Chromium
D. Vanadium
The main constituent of bones is ______________________?
A. CaCO3
B. Ca3(PO4)2
C. CaF2
D. CaCl2
When an isolated thermodynamic system executes a process ___________________?
A. Heat transfer takes place
B. Work is done
C. Mass flow occurs across the boundary of the system
D. No chemical reaction takes place within the system
A material is capable of resisting softening at high temperature, because of its property termed as____________________?
A. Fatigue
B. Hot hardness
C. Hot temper
D. Creep
Which of the following heat treatment processes is usually applied to castings ?
A. Annealing
B. Tempering
C. Normalising
D. Carburising
Atomic _________________ of an element is a whole number ?
A. Volume
B. Number
C. Weight
D. Radius
Strain hardening effect in metals subjected to cold working is due to the _______________ mechanism?
A. Fracture
B. Slip
C. Winning
D. Dislocation
Hardening of steel is not possible, unless it is heated _________________ critical point ?
A. Between the first & second
B. Above the lowest
C. Above the highest
D. Between the second & third
For the irreversible reaction, Ca+ 2C = Ca C2 , Δ H°298 = – 60000 J . mole-1 . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be__________________?
A. 60,000 J
B. 30,000 J
C. 90,000 J
D. 2,40,000 J
Cascade control is___________________?
A. The continuous adjustment of the set point index of an automatic control loop by a primary (master) controller
B. Useful to control flow from temperature
C. Used when changes in process conditions cause serious upsets in the controlled variable
D. All A, B & C
Catalyst used in the catalytic converter employed in automobiles to convert CO into CO2 and for complete oxidation of un-burnt hydrocarbons is___________________?
A. Cobalt
B. Nickel
C. Vanadium
D. Platinum
Satellite is a _________________ material?
A. Ceramic
B. Ferrous
C. Cemented carbide
D. Non-ferrous cast alloy cutting tool
_______________ number determines whether the fluid flow in an open channel is super-critical, critical or sub-critical ?
A. Reynolds
B. Mach
C. Froude
D. Weber