Chemical Engineering Basics MCQs

Option A: Processing of thermosetting plastics is ideally done by injection moulding

Option B: Processing of thermoplastics is ideally done by compression moulding

Option C: Mass production of seamless pipes are done by electrical resistance welding (ERW)

Option D: Stretch forming is a process of cold drawing

Correct Answer: Mass production of seamless pipes are done by electrical resistance welding (ERW) ✔

Option A: Jet engine can work, where there is no atmosphere

Option B: Rocket engines cannot work, where there is no atmosphere

Option C: Rocket engines carry oxygen required for the combustion in the form of oxidiser

Option D: Jet engines also carry oxidiser

Correct Answer: Rocket engines carry oxygen required for the combustion in the form of oxidiser ✔

Option A: The X-rays cannot be deflected by electric field unlike cathode rays

Option B: The intensity of X-rays can be measured by ionisation current produced due to the ionisation

Option C: The quality of X-rays can be controlled by varying the anode-cathode voltage

Option D: Crystal structure of a material can be studied by an electron microscope

Correct Answer: The quality of X-rays can be controlled by varying the anode-cathode voltage ✔

Option A: Geothermal energy is a non-conventional source of energy

Option B: Mass is converted into energy in both nuclear fission & fusion reaction

Option C: Inhalation of mercury vapour is not harmful for human beings

Option D: Inhalation of arsenic causes cancer

Correct Answer: Inhalation of mercury vapour is not harmful for human beings ✔

Option A: Ductile fracture of a stressed material, which exhibits a large plastic deformation is commonly

Option B: Brittle fracture is caused by the propagation of pre-existing cracks in the material and involves minimum plastic deformation

Option C: Fatigue fracture of a material is always brittle in nature and takes place due to the existence of

Option D: Brittle materials are generally tested in tension

Correct Answer: Brittle fracture is caused by the propagation of pre-existing cracks in the material and involves minimum plastic deformation ✔

Option A: The equivalent stiffness of two springs (of equal stiffness ‘S’) in series is S/2 while in parallel

Option B: For a helical spring, deflection is proportional to D3 (D = mean coil diameter) or d4 (d = wire

Option C: Crushing load or columns is less than the buckling load

Option D: Modulus of resilience is proportional to (stress at elastic limit)2

Correct Answer: Crushing load or columns is less than the buckling load ✔

Option A: Malleable

Option B: Ductile

Option C: Brittle

Option D: Tough

Correct Answer: Brittle ✔

Option A: Lower cost

Option B: Abundant availability

Option C: Resistance to vegetable acids as the tin plate are commercially used in ‘canning’ industry

Option D: None of these

Correct Answer: C. Resistance to vegetable acids as the tin plate are commercially used in ‘canning’ industry ✔

Option A: Parallel flow with equal heat capacities

Option B: Counter flow with equal heat capacities

Option C: Counter flow with unequal heat capacities

Option D: Parallel flow with unequal heat capacities

Correct Answer: Counter flow with equal heat capacities ✔

Option A: 15

Option B: 25

Option C: 10

Option D: 30

Correct Answer: 25 ✔

Option A: Steel

Option B: Lignite

Option C: Water

Option D: Lime stone

Correct Answer: Water ✔

Option A: Creep

Option B: Toughness

Option C: Tensile strength

Option D: Fatigue

Correct Answer: Toughness ✔

Option A: V

Option B: V/2

Option C: 2V

Option D: 3V

Correct Answer: V ✔

Option A: PCl5

Option B: Quick lime

Option C: CaCl2

Option D: Concentrated H2SO4

Correct Answer: Quick lime ✔

Option A: Ambient

Option B: Dry bulb

Option C: Dew point

Option D: Wet bulb

Correct Answer: Dew point ✔

Option A: 23

Option B: 23/2

Option C: 25/2

Option D: 21/3

Correct Answer: 23 ✔

Option A: Melts below the melting points of base metals

Option B: Melts below 300°C

Option C: Is copper phosphorous alloy

Option D: Is copper

Correct Answer: Melts below the melting points of base metals ✔

Option A: Is always less than 1

Option B: Is always greater than 1

Option C: Can be 5

Option D: Depends on the choice of the standard state

Correct Answer: Depends on the choice of the standard state ✔

Option A: °C

Option B: °F

Option C: °K

Option D: °R

Correct Answer: °F ✔

Option A: Pewter

Option B: White

Option C: Babbitt

Option D: Gun

Correct Answer: Babbitt ✔

Option A: 80-120

Option B: 200-300

Option C: 600-800

Option D: 1000-1100

Correct Answer: 1000-1100 ✔

Option A: Nitrous oxide

Option B: Nitric oxide

Option C: Nitrogen trioxide

Option D: Nitrogen pentoxide

Correct Answer: Nitrous oxide ✔

Option A: Radiation

Option B: Conduction

Option C: Convection

Option D: Both B. & C.

Correct Answer: Radiation ✔

Option A: 75-100

Option B: 200-300

Option C: 350-450

Option D: 500-600

Correct Answer: 200-300 ✔

Option A: 1 kgf/m2

Option B: 10 kgf/m2

Option C: 10 kgf/mm2

Option D: 1 kgf/mm2

Correct Answer: 10 kgf/m2 ✔

Option A: Is due to intermolecular forces of cohesion

Option B: Decreases with rise in temperature

Option C: Is responsible for the spherical shape of an isolated liquid drop

Option D: All A, B. & C

Correct Answer: D. All A, B. & C ✔

Option A: Pressure

Option B: Temperature

Option C: Volume

Option D: None of these

Correct Answer: Pressure ✔

Option A: Diminishing balance

Option B: Sinking fund

Option C: Multiple straight line

Option D: Sum of the years digit

Correct Answer: Diminishing balance ✔

Option A: Tapering pipe at constant flow rate

Option B: Tapering pipe at either decreasing or increasing flow rate

Option C: Long pipeline of constant diameter

Option D: None of these

Correct Answer: Tapering pipe at either decreasing or increasing flow rate ✔

Option A: Shock loading

Option B: Vibration

Option C: Fatigue

Option D: Tension

Correct Answer: Shock loading ✔

Option A: The better insulation material should be put just next to pipe (i.e., inside)

Option B: The better insulating material should be put outside

Option C: Either of the insulating material could be put on either side

Option D: Steam temperature is considered before deciding as to which insulating material is to be put

Correct Answer: The better insulation material should be put just next to pipe (i.e., inside) ✔

Option A: Machinability

Option B: Corrosion resistance

Option C: Fluidity

Option D: Strength

Correct Answer: Machinability ✔

Option A: H2SO3

Option B: HF

Option C: HNO3

Option D: K2Cr2O7

Correct Answer: HF ✔

Option A: Steel

Option B: Glass wood

Option C: Copper

Option D: Fireclay bricks

Correct Answer: Glass wood ✔

Option A: Helium

Option B: Oxygen

Option C: Carbon dioxide

Option D: None of these

Correct Answer: Carbon dioxide ✔

Option A: Extrusion

Option B: Bending

Option C: Rolling

Option D: Forging

Correct Answer: Forging ✔

Option A: 3171Pa

Option B: 3567Pa

Option C: 1.01 × 105Pa

Option D: 5000Pa

Correct Answer: 3567Pa ✔

Option A: Iron

Option B: Copper

Option C: Titanium

Option D: Aluminium

Correct Answer: Aluminium ✔

Option A: Impact

Option B: Completely reversed

Option C: Dynamic

Option D: Static & dynamic

Correct Answer: Completely reversed ✔

Option A: Impact strength

Option B: Endurance limit

Option C: Machinability

Option D: Corrosion resistance

Correct Answer: Impact strength ✔

Option A: lbm/lbf. ft/sec2

Option B: lbf/lbm. ft/sec2

Option C: ft/sec2

Option D: lbm/lbf. sec2/ft

Correct Answer: lbm/lbf. ft/sec2 ✔

Option A: Exchange between two liquid phases

Option B: Exchange between a gaseous phase and a liquid phase

Option C: Exchange between a liquid phase and an organic resin phase

Option D: Exchange between a solid phase and a gas phase

Correct Answer: Exchange between a liquid phase and an organic resin phase ✔

Option A: 746

Option B: 3000

Option C: 1000

Option D: 550

Correct Answer: 3000 ✔

Option A: 4

Option B: 8

Option C: 14

Option D: 20

Correct Answer: 4 ✔

Option A: Decreases

Option B: Increases

Option C: Remain same

Option D: May increase or decrease; depends on the altitude where snow melts

Correct Answer: Decreases ✔

Option A: Carburising

Option B: Nitriding

Option C: Cyaniding

Option D: Annealing

Correct Answer: Carburising ✔

Option A: Lignite & anthracite coal

Option B: Lignite & coal gas

Option C: Petrol & diesel

Option D: Coal gas & natural gas

Correct Answer: Petrol & diesel ✔

Option A: The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3

Option B: Approximately 80% of the aluminium deposited on the cathode comes from cryolite

Option C: Sodium is deposited along with aluminium, but is immediately vaporised

Option D: Anode effect sets in when the cryolite concentration goes below 40%.

Correct Answer: The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3 ✔

Option A: Iron ore & coke

Option B: Iron ore, coke & air

Option C: Limestone, coke & iron ore

Option D: Limestone, sand & iron ore

Correct Answer: Limestone, coke & iron ore ✔

Option A: Pitot tube

Option B: Hot wire anemometer

Option C: Rotameter

Option D: Stroboscope

Correct Answer: Pitot tube ✔

Option A: 0.01 to 0.10

Option B: 0.2 to 0.4

Option C: 0.5 to 0.7

Option D: 0.8 to 1.0

Correct Answer: 0.2 to 0.4 ✔

Option A: Stainless steel

Option B: Mild steel

Option C: High speed steel

Option D: High carbon steel

Correct Answer: High speed steel ✔

Option A: Condensation

Option B: Deaeration

Option C: Scavenging

Option D: Exhaust

Correct Answer: Deaeration ✔

Option A: Grain refining

Option B: Grain coarsening

Option C: Surface hardening

Option D: Shot peening

Correct Answer: Grain coarsening ✔

Option A: Blow moulding

Option B: Calendaring

Option C: Extrusion

Option D: Injection

Correct Answer: Blow moulding ✔

Option A: Low toughness

Option B: No tendency to distort

Option C: High density

Option D: Very high toughness

Correct Answer: No tendency to distort ✔

Option A: Polystyrene

Option B: Melamine

Option C: Polystyrene

Option D: Polyurethane

Correct Answer: Polyurethane ✔

Option A: Thermosetting polymers

Option B: High carbon steels

Option C: Brasses

Option D: Borosilicate glasses

Correct Answer: Brasses ✔

Option A: √T

Option B: 1/√P

Option C: √y

Option D: 1/√ρ

Correct Answer: 1/√P ✔

Option A: Visco-elastic

Option B: Isotropic

Option C: Elastic

Option D: Plastic

Correct Answer: Plastic ✔

Option A: Forge

Option B: Fusion

Option C: Resistance

Option D: Arc

Correct Answer: Fusion ✔

Option A: Manganese

Option B: Silicon

Option C: Nickel

Option D: Chromium

Correct Answer: Manganese ✔

Option A: Butt

Option B: Lap

Option C: Welded

Option D: None of these

Correct Answer: Lap ✔

Option A: Surface finish of the sheet is poor

Option B: Sheet material has been given substantial spring back

Option C: Starting sheet has planer anisotropy due to its texture

Option D: Starting sheet has normal anisotropy due to its texture

Correct Answer: Starting sheet has planer anisotropy due to its texture ✔

Option A: Polymerisation

Option B: Photochemical reaction

Option C: Oxidation

Option D: None of these

Correct Answer: Photochemical reaction ✔

Option A: Wetness

Option B: Mass flow rate

Option C: Both A & B

Option D: Neither A nor B

Correct Answer: Both A & B ✔

Option A: Cyaniding

Option B: Parkerizing

Option C: Austempering

Option D: Martempering

Correct Answer: Parkerizing ✔

Option A: Cobalt

Option B: Hafnium

Option C: Cadmium

Option D: Boron

Correct Answer: Cobalt ✔

Option A: Brake linings

Option B: Bearings

Option C: Carbide tool tips

Option D: All A, B and C

Correct Answer: All A, B and C ✔

Option A: Bubble generation is by expansion of entrapped gas/vapour at small cavities in the surface

Option B: Surface temperature is greater than the saturation temperature of the liquid

Option C: Heat transfer from the surface of the liquid is less than that in film boiling

Option D: The temperature is less than that of film boiling

Correct Answer: The temperature is less than that of film boiling ✔

Option A: Decreases

Option B: Increases

Option C: Remain same

Option D: May increase or decrease

Correct Answer: Decreases ✔

Option A: Impact strength

Option B: Percent elongation

Option C: Hardness

Option D: Both B & C

Correct Answer: Impact strength ✔

Option A: Refrigerant cooling

Option B: Evaporator

Option C: Condenser

Option D: Throttling

Correct Answer: Condenser ✔

Option A: Scratch

Option B: Indentation

Option C: Dynamic

Option D: Rebound

Correct Answer: Scratch ✔

Option A: Aluminium

Option B: Tin

Option C: Lead

Option D: Both B. & C.

Correct Answer: D. Both B. & C. ✔

Option A: Minor

Option B: Major

Option C: Pitch

Option D: None of these

Correct Answer: Major ✔

Option A: Pig

Option B: Cast

Option C: Wrought

Option D: Carbon free

Correct Answer: Cast ✔

Option A: Lack of free

Option B: Excess of

Option C: Decrease in

Option D: None of these

Correct Answer: Excess of ✔

Option A: Conduction

Option B: Radiation

Option C: Natural convection

Option D: Forced convection

Correct Answer: Radiation ✔

Option A: Phosphate coating is used as an excellent base for paints & enamels

Option B: Phosphate coating is less corrosion resistant than chromate coating

Option C: The base metal to be electroplated is normally made the cathode of the electrolytic cell and

Option D: Calorising is the process of coating steel with chromium

Correct Answer: Calorising is the process of coating steel with chromium ✔

Option A: Inversely with thermal conductivity

Option B: Directly with heat transfer co-efficient

Option C: Directly with thermal conductivity

Option D: Inversely with the dimension of the solid

Correct Answer: Inversely with thermal conductivity ✔

Option A: Applies to elastic deformation

Option B: Applies beyond limit of proportionality in stress-strain curve

Option C: States that stress is inversely proportional to strain upto elastic limit

Option D: None of these

Correct Answer: Applies to elastic deformation ✔

Option A: Mechanical

Option B: Overall

Option C: Volumetric

Option D: Impeller

Correct Answer: Mechanical ✔

Option A: Decrease in the viscosities of both liquids & gases

Option B: Increase in the viscosities of both liquids & gases

Option C: Increase in the viscosity of liquids and decrease in that of gases

Option D: Decrease in the viscosity of liquids and increase in that of gases

Correct Answer: Decrease in the viscosity of liquids and increase in that of gases ✔

Option A: Bolt

Option B: Stud

Option C: Set screw

Option D: Split nut

Correct Answer: Stud ✔

Option A: 0

Option B: ∞

Option C: 1

Option D: 0.5

Correct Answer: 1 ✔

Option A: Heat

Option B: Humidity

Option C: Weight

Option D: None of these

Correct Answer: None of these ✔

Option A: Petrol

Option B: LPG

Option C: Light hydrocarbon gases (e.g. butane or propane)

Option D: None of these

Correct Answer: Petrol ✔

Option A: Product yields and quality cannot be achieved in continuous process, because of long

Option B: Sales demand of product is not steady

Option C: Same equipment cannot be used for several processes of the same nature

Option D: All (A), B. & (C)

Correct Answer: Sales demand of product is not steady ✔

Option A: Anodising

Option B: Tempering

Option C: Carburising

Option D: Annealing

Correct Answer: Tempering ✔

Option A: Air

Option B: Oxygen

Option C: Liquid medium

Option D: Gaseous medium

Correct Answer: Liquid medium ✔

Option A: Red

Option B: Extended

Option C: Super

Option D: Extreme

Correct Answer: Super ✔

Option A: S < 0.05% and P < 0.05%

Option B: S < 0.05% and P < 1.5%

Option C: S 1.5%

Option D: S > 1.5% and P < 0.05%

Correct Answer: S < 0.05% and P < 0.05% ✔

Option A: √(Particle diameter)

Option B: Particle diameter

Option C: (Particle diameter)2

Option D: (Particle diameter)3

Correct Answer: Particle diameter ✔

Option A: Time

Option B: Motion

Option C: Both A. & B.

Option D: Neither A. nor B.

Correct Answer: C. Both A. & B. ✔

Option A: Goods produced

Option B: Gold reserve

Option C: Earning of the citizens

Option D: Taxes paid

Correct Answer: Goods produced ✔

Option A: Horizontal

Option B: Vertical

Option C: Inclined

Option D: Any

Correct Answer: Any ✔

Option A: T1/(T1-T2)

Option B: T2/(T1-T2)

Option C: T1/T2

Option D: T2/T1

Correct Answer: T2/(T1-T2) ✔

Option A: Guard the boiler in case of abnormal rise in steam pressure

Option B: Drain out water and sludge during its repair

Option C: Regulate the supply of water in boiler

Option D: Put out the fire in the furnace when the water level in the boiler falls to unsafe limit

Correct Answer: Drain out water and sludge during its repair ✔

Option A: Water alkalinity & leakage

Option B: Hydrazine addition during feed water treatment

Option C: Release of non-condensable gas from water in the boiler

Option D: Scale formation

Correct Answer: Release of non-condensable gas from water in the boiler ✔