Chemical Engineering Basics MCQs

Option A: Shear

Option B: Tensile

Option C: Compressive

Option D: None of these

Correct Answer: Shear ✔

Option A: Alloy steel

Option B: Grey cast iron

Option C: Mild steel

Option D: High carbon steel

Correct Answer: Mild steel ✔

Option A: Increases

Option B: Decreases

Option C: Remain constant

Option D: Increases to a maximum before decreasing

Correct Answer: Increases ✔

Option A: Spheroidising

Option B: Tempering

Option C: Normalising

Option D: Annealing

Correct Answer: Spheroidising ✔

Option A: Oxidising and basic slag

Option B: Reducing and basic slag

Option C: High activity co-efficient of phosphorous in metal

Option D: Oxidising and neutral slag

Correct Answer: Reducing and basic slag ✔

Option A: Mach

Option B: Froude

Option C: Reynolds

Option D: Euler

Correct Answer: Mach ✔

Option A: Stellite

Option B: Steel

Option C: Bronze

Option D: Lead

Correct Answer: Steel ✔

Option A: Piercing

Option B: Spinning

Option C: Drawing

Option D: Extrusion

Correct Answer: Spinning ✔

Option A: Flow rate of molten metal

Option B: Specific gravity of a liquid

Option C: Composition of alloys

Option D: Concentration of a solution

Correct Answer: Specific gravity of a liquid ✔

Option A: Temperature

Option B: Area

Option C: Nature

Option D: All ‘A’, ‘B’ & ‘C’

Correct Answer: Temperature ✔

Option A: Brass

Option B: Aluminium

Option C: Copper

Option D: Lead

Correct Answer: Brass ✔

Option A: 0

Option B: 0.33

Option C: 0.44

Option D: 0.25

Correct Answer: 0 ✔

Option A: Capacitance

Option B: Resistance

Option C: Mutual inductance

Option D: None of these

Correct Answer: Mutual inductance ✔

Option A: Pressure

Option B: Density

Option C: Force

Option D: None of these

Correct Answer: Pressure ✔

Option A: Steel

Option B: Glass

Option C: Rubber

Option D: Brass

Correct Answer: Steel ✔

Option A: Two

Option B: Four

Option C: Six

Option D: Eight

Correct Answer: Two ✔

Option A: Has higher current carrying capacity

Option B: Has better electron emissivity

Option C: Is stronger than ordinary tungsten

Option D: Is easy to prepare

Correct Answer: Has better electron emissivity ✔

Option A: Zirconia

Option B: Alumina

Option C: Bakelite

Option D: Tungsten carbide

Correct Answer: Tungsten carbide ✔

Option A: Chromatography

Option B: Evaporation

Option C: Filtration

Option D: Fractional distillation

Correct Answer: Filtration ✔

Option A: -55°

Option B: -40°

Option C: -33°

Option D: -58°

Correct Answer: -40° ✔

Option A: Soft

Option B: Hard

Option C: Tough

Option D: Ductile & malleable

Correct Answer: Hard ✔

Option A: C2H2

Option B: SiCl4

Option C: P2O5

Option D: PCl5

Correct Answer: SiCl4 ✔

Option A: Final control element

Option B: On-off control

Option C: Floating control action

Option D: None of these

Correct Answer: Final control element ✔

Option A: 90% tungsten carbide and 10% cobalt

Option B: 70% aluminium oxide & 30% silica

Option C: 30% nickel, 15% chromium & 55% tungsten

Option D: 65% tungsten & 35% zirconium

Correct Answer: 90% tungsten carbide and 10% cobalt ✔

Option A: Wood’s metal

Option B: Babbitt metal

Option C: Monel metal

Option D: Duralumin

Correct Answer: A. Wood’s metal ✔

Option A: 5

Option B: 1.25

Option C: 2.5

Option D: 3.75

Correct Answer: 5 ✔

Option A: Lumps

Option B: Pellets

Option C: Briquettes

Option D: Sinter

Correct Answer: Pellets ✔

Option A: Without melting the base metal

Option B: With a non-ferrous filler

Option C: Both A. & B.

Option D: Neither A. nor (B)

Correct Answer: C. Both A. & B. ✔

Option A: Martenistic

Option B: Bainitic

Option C: Pearlitic

Option D: Ferritic

Correct Answer: Pearlitic ✔

Option A: Deviation

Option B: Derivative time

Option C: Error ratio

Option D: Differential gap

Correct Answer: Deviation ✔

Option A: 140

Option B: 180

Option C: 240

Option D: 280

Correct Answer: 280 ✔

Option A: Form slag by combining with impurities

Option B: Supply heat by undergoing exothermic reaction with impurities

Option C: Reduce the coke consumption

Option D: Reduce slag viscosity

Correct Answer: Form slag by combining with impurities ✔

Option A: Packed column

Option B: Venturi scrubber

Option C: Bubble cap plate column

Option D: Wetted wall column

Correct Answer: Venturi scrubber ✔

Option A: Zinc

Option B: Nickel

Option C: Lead

Option D: Tin

Correct Answer: Nickel ✔

Option A: Boiling

Option B: Forced convection in air

Option C: Free convection in air

Option D: Conduction in air

Correct Answer: Conduction in air ✔

Option A: A physical phenomenon

Option B: A chemical phenomenon

Option C: Same as erosion

Option D: An uncontrollable phenomenon

Correct Answer: A chemical phenomenon ✔

Option A: Enthalpy

Option B: Entropy

Option C: Pressure

Option D: Volume

Correct Answer: Pressure ✔

Option A: Makes it usable in almost all magnetic circuits where alternating current is used

Option B: Increases its electrical resistivity and decreases the hysteresis loss

Option C: Is present upto 5% & 4% respectively when used in transformers & motor armatures

Option D: All ‘A’, ‘B’ & ‘C’

Correct Answer: D. All ‘A’, ‘B’ & ‘C’ ✔

Option A: Copper

Option B: Steel

Option C: Aluminium

Option D: Brass

Correct Answer: Copper ✔

Option A: Thermal power

Option B: Hydroelectric power

Option C: Nuclear-fusion power

Option D: Solar power

Correct Answer: Solar power ✔

Option A: Paper

Option B: Cloth

Option C: Lead

Option D: Aluminium

Correct Answer: Lead ✔

Option A: (ε1 + ε2)/ε1.ε2

Option B: ε1.ε2/(ε1 + ε2 – ε1.ε2)

Option C: ε1.ε2

Option D: ε1 + ε2

Correct Answer: ε1.ε2 ✔

Option A: Fluidity

Option B: Basicity

Option C: Acidity

Option D: Viscosity

Correct Answer: Fluidity ✔

Option A: Specific gravities

Option B: Densities

Option C: Gas characteristic constants

Option D: Molecular weights

Correct Answer: Molecular weights ✔

Option A: Liquidation of financial obligations on instalment basis

Option B: Commitment of financial obligation on priority

Option C: Liquidation of all the obsolete equipments of the company

Option D: Modernisation of the plant equipments

Correct Answer: Liquidation of financial obligations on instalment basis ✔

Option A: Indeterminate

Option B: Zero

Option C: Infinity

Option D: Same as that at any other temperature

Correct Answer: Zero ✔

Option A: H2

Option B: He

Option C: Ar

Option D: O2

Correct Answer: He ✔

Option A: Molybdenum

Option B: Chromium

Option C: Vanadium

Option D: Silicon

Correct Answer: Silicon ✔

Option A: As tiny gas bubbles

Option B: In the atomic form

Option C: In the ionic form

Option D: In the molecular form

Correct Answer: As tiny gas bubbles ✔

Option A: 8

Option B: 35

Option C: 65

Option D: 80

Correct Answer: 35 ✔

Option A: Aluminium carbide

Option B: Tungsten carbide

Option C: Nickel carbide

Option D: Iron carbide

Correct Answer: Tungsten carbide ✔

Option A: Gamma rays

Option B: Microwaves

Option C: A beam of white light

Option D: A beam of coherent light

Correct Answer: A beam of coherent light ✔

Option A: Killed

Option B: Rimming

Option C: High alloy

Option D: None of these

Correct Answer: High alloy ✔

Option A: Ballast

Option B: Voltage balancing potentiometric

Option C: Simple current sensitive

Option D: None of these

Correct Answer: Voltage balancing potentiometric ✔

Option A: Mild steel

Option B: Concrete

Option C: Cast iron

Option D: Asbestos cement

Correct Answer: Cast iron ✔

Option A: 3

Option B: 5

Option C: 0.5

Option D: 1.5

Correct Answer: 5 ✔

Option A: Watt/m

Option B: Joule/m2

Option C: Newton/m2

Option D: Joule/m

Correct Answer: Joule/m2 ✔

Option A: Are exemplified by Na, K and Li

Option B: Do not resist corrosion very strongly

Option C: Are the lowermost in the electro-chemical series of metals

Option D: None of these

Correct Answer: Are the lowermost in the electro-chemical series of metals ✔

Option A: Silicon carbide

Option B: Corundum

Option C: Aluminium oxide

Option D: Boron carbide

Correct Answer: Aluminium oxide ✔

Option A: Free electrons

Option B: Ions

Option C: Conduction electrons

Option D: Holes

Correct Answer: Holes ✔

Option A: Diamagnetic

Option B: Ferromagnetic

Option C: Ferroelectric

Option D: Piezoelectric

Correct Answer: Piezoelectric ✔

Option A: Adhesive

Option B: Cohesive

Option C: Molecular

Option D: Vander Walls

Correct Answer: Cohesive ✔

Option A: 1 : 1

Option B: 1 : 2

Option C: 2 : 1

Option D: 1 : 4

Correct Answer: 1 : 1 ✔

Option A: 5-10

Option B: 1000-1500

Option C: 120-500

Option D: 1500-3000

Correct Answer: 120-500 ✔

Option A: Creep

Option B: Endurance

Option C: Fatigue

Option D: None of these

Correct Answer: Creep ✔

Option A: Calcium

Option B: Nitrogen

Option C: Phosphorous

Option D: Hydrogen

Correct Answer: Nitrogen ✔

Option A: Carburising

Option B: Neutral

Option C: Oxidising

Option D: All A, B. & C

Correct Answer: Neutral ✔

Option A: Mercury

Option B: Sodium

Option C: Calcium

Option D: Magnesium

Correct Answer: Sodium ✔

Option A: 7 and 30

Option B: 10 and 50

Option C: 2 and 50

Option D: 13 and 55

Correct Answer: 2 and 50 ✔

Option A: Bleaching powder

Option B: Lime powder

Option C: Aluminium sulphate

Option D: None of these

Correct Answer: Lime powder ✔

Option A: Tensile

Option B: Fatigue

Option C: Impact

Option D: None of these

Correct Answer: Tensile ✔

Option A: Lead

Option B: Stainless steel

Option C: Graphite

Option D: Cast iron

Correct Answer: Graphite ✔

Option A: Free expansion of an ideal gas

Option B: Adiabatic expansion of steam in turbine

Option C: Adiabatic compression of air

Option D: Ideal compression of air

Correct Answer: Free expansion of an ideal gas ✔

Option A: Tempered

Option B: Normalised

Option C: Annealed

Option D: Hardened

Correct Answer: Annealed ✔

Option A: Ferritic stainless steel

Option B: HSLA steel

Option C: Titanium

Option D: Austenitic stainless steel

Correct Answer: HSLA steel ✔

Option A: Decreases

Option B: Increases

Option C: Remain constant

Option D: Shows no systematic variation

Correct Answer: Decreases ✔

Option A: Mechanical

Option B: Machining

Option C: Magnetic

Option D: Refractory

Correct Answer: Magnetic ✔

Option A: More

Option B: Less

Option C: Equal

Option D: Much more

Correct Answer: Equal ✔

Option A: Shear stress is maximum

Option B: Velocity gradient is flat

Option C: Density variation is maximum

Option D: Shear stress is zero

Correct Answer: Shear stress is maximum ✔

Option A: Reduced chance of gas porosity

Option B: Greater dimensional stability of the casting

Option C: Uniform flow of molten metal into the mould cavity

Option D: Less sand expansion type of casting defect

Correct Answer: Greater dimensional stability of the casting ✔

Option A: No

Option B: Acid

Option C: Basic

Option D: Neutral

Correct Answer: No ✔

Option A: 1

Option B: 10

Option C: 25

Option D: 50

Correct Answer: 1 ✔

Option A: Time

Option B: Square root of time

Option C: Square of time

Option D: Cube of time

Correct Answer: Square root of time ✔

Option A: Capillary action

Option B: Adhesion

Option C: Cohesion

Option D: Surface tension

Correct Answer: Adhesion ✔

Option A: Only

Option B: Plus variable cost

Option C: Plus overhead cost

Option D: Plus selling expenses

Correct Answer: Plus variable cost ✔

Option A: Cobalt, chromium & tungsten

Option B: Cobalt, chromium & nickel

Option C: Molybdenum, tungsten & chromium

Option D: Cobalt, zirconium & molybdenum

Correct Answer: Cobalt, chromium & tungsten ✔

Option A: Compression ignition system

Option B: Spark plug

Option C: Carburettor

Option D: Otto cycle

Correct Answer: Compression ignition system ✔

Option A: Insulator for heat & electricity transmission

Option B: Ferritic

Option C: Behave like paramagnetic materials

Option D: Superconductor

Correct Answer: Behave like paramagnetic materials ✔

Option A: Seamless & made of steel

Option B: Heat treated before use

Option C: Made by sand casting

Option D: Welded steel cylinders

Correct Answer: Seamless & made of steel ✔

Option A: 5CaO. 3 Al2O3

Option B: 3CaO. Al2O3

Option C: 3CaO. SiO2

Option D: 2CaO. SiO2

Correct Answer: 5CaO. 3 Al2O3 ✔

Option A: Greater than

Option B: Less than

Option C: Equal to

Option D: Unpredictable; depends on the bubble size

Correct Answer: Less than ✔

Option A: Collar

Option B: Flanged

Option C: Bell and Spigot

Option D: Expansion

Correct Answer: Flanged ✔

Option A: Output & fineness

Option B: Velocity

Option C: Both A. & B.

Option D: None of these

Correct Answer: C. Both A. & B. ✔

Option A: 0.8

Option B: 1

Option C: 1.4

Option D: 1.8

Correct Answer: 1 ✔

Option A: Density

Option B: Thermal diffusivity

Option C: Viscosity

Option D: Thermal conductivity

Correct Answer: Density ✔

Option A: 0°K to 123°K

Option B: 0°C to – 123°C

Option C: 0°C to – 273°C

Option D: 0°K to 273°K

Correct Answer: 0°K to 123°K ✔

Option A: Base and strong acid

Option B: Base and weak acid

Option C: Acid and weak base

Option D: None of these

Correct Answer: Base and strong acid ✔

Option A: Spheroids

Option B: Nodular aggregates of graphite

Option C: Flakes

Option D: Cementite

Correct Answer: Flakes ✔

Option A: High viscosity

Option B: Low surface tension

Option C: High density

Option D: High surface tension

Correct Answer: High surface tension ✔

Option A: Degradation of energy

Option B: Decrease in system pressure

Option C: Increase in the availability of energy

Option D: Increase in the temperature

Correct Answer: Degradation of energy ✔