Chemical Engineering Basics MCQs

Option A: 0.5

Option B: 3

Option C: 10

Option D: 25

Correct Answer: 3 ✔

Option A: Nickel

Option B: Vanadium

Option C: Molybdenum

Option D: Chromium

Correct Answer: Nickel ✔

Option A: Oxy-acetylene flame

Option B: Oxy-hydrogen flame

Option C: Arc welding

Option D: Inert gas arc welding

Correct Answer: Inert gas arc welding ✔

Option A: Glass fibre in a polymer matrix

Option B: Glass fibre in a metallic matrix

Option C: Polymer fibre in a glassy matrix

Option D: Both ‘b’ & ‘c’

Correct Answer: Glass fibre in a polymer matrix ✔

Option A: 100

Option B: 900

Option C: 9000

Option D: 10000

Correct Answer: 100 ✔

Option A: 20

Option B: 200

Option C: 500

Option D: 2000

Correct Answer: 20 ✔

Option A: Brass

Option B: Mild steel

Option C: Cast iron

Option D: Lead

Correct Answer: Cast iron ✔

Option A: 60 – 100

Option B: 400 – 700

Option C: 1200 -1500

Option D: 2000 – 2300

Correct Answer: B. 400 – 700 ✔

Option A: Thoria

Option B: Glass

Option C: Ice

Option D: Pig iron

Correct Answer: Glass ✔

Option A: 50

Option B: 300

Option C: 500

Option D: 800

Correct Answer: 800 ✔

Option A: 0°C

Option B: 50°K

Option C: 0°R

Option D: None of these

Correct Answer: 0°R ✔

Option A: Tempering

Option B: Chromising

Option C: Aluminising

Option D: Alloying

Correct Answer: Tempering ✔

Option A: Strain rate is increased

Option B: Grain size is increased

Option C: Prior cold deformation is increased

Option D: Not affected by any of the above parameters

Correct Answer: Strain rate is increased ✔

Option A: Ultraviolet rays

Option B: Infrared rays

Option C: Cosmic rays

Option D: X-rays

Correct Answer: Cosmic rays ✔

Option A: Molybdenum

Option B: Nickel

Option C: Manganese

Option D: Chromium

Correct Answer: Molybdenum ✔

Option A: Vander Waal’s

Option B: Ionic

Option C: Metallic

Option D: Covalent

Correct Answer: Covalent ✔

Option A: Composition

Option B: Temperature

Option C: Both A. & B.

Option D: Neither A. nor B.

Correct Answer: C. Both A. & B. ✔

Option A: Face centred cubic (fcc)

Option B: Body centred cubic (bcc)

Option C: Orthorhombic

Option D: Cubic

Correct Answer: Body centred cubic (bcc) ✔

Option A: Casting

Option B: Cold working

Option C: Forging

Option D: Welding

Correct Answer: Casting ✔

Option A: Fatigue resistance

Option B: Tensile strength

Option C: Creep resistance

Option D: All A, B. & C

Correct Answer: D. All A, B. & C ✔

Option A: Cast iron

Option B: Steel

Option C: Concrete

Option D: Plastic

Correct Answer: Cast iron ✔

Option A: Parabolic

Option B: Hyperbolic

Option C: Straight line

Option D: None of these

Correct Answer: Parabolic ✔

Option A: Mild steel

Option B: Copper

Option C: Cast iron

Option D: Wrought iron

Correct Answer: Wrought iron ✔

Option A: Cast iron

Option B: Hypo-eutectoid steel

Option C: Hyper-eutectoid steel

Option D: Eutectoid steel

Correct Answer: Hypo-eutectoid steel ✔

Option A: Electrical energy

Option B: Chemical energy

Option C: Energy of high velocity electrons

Option D: Heat generated by friction

Correct Answer: Chemical energy ✔

Option A: A

Option B: l

Option C: A2

Option D: Both A. & B.

Correct Answer: D. Both A. & B. ✔

Option A: Brine (sea water)

Option B: Diamond

Option C: Distilled water

Option D: Glass

Correct Answer: Diamond ✔

Option A: Nuclear fission

Option B: Nuclear fusion

Option C: A combination of both nuclear fission & fusion

Option D: None of these

Correct Answer: A combination of both nuclear fission & fusion ✔

Option A: Fusion

Option B: Fission

Option C: Combustion

Option D: None of these

Correct Answer: Fusion ✔

Option A: 180°

Option B: 212°

Option C: 32°

Option D: 273°

Correct Answer: 180° ✔

Option A: Followed by tempering or carburising

Option B: Preceded by its tempering

Option C: Done to get a soft ductile interior with a very hard surface

Option D: Carried out to get extreme hardness in its core

Correct Answer: Carried out to get extreme hardness in its core ✔

Option A: Suspension

Option B: Emulsion

Option C: Gel

Option D: Solution

Correct Answer: Emulsion ✔

Option A: Aluminium

Option B: Brass

Option C: Cast iron

Option D: Steel

Correct Answer: Aluminium ✔

Option A: Grey

Option B: Nodular

Option C: Malleable

Option D: Spheroidal

Correct Answer: Malleable ✔

Option A: Fuel cells

Option B: Photo voltaic cell

Option C: Magneto hydrodynamic generator

Option D: None of these

Correct Answer: Magneto hydrodynamic generator ✔

Option A: Ductile material

Option B: Hard materials

Option C: Brittle materials

Option D: Finishing cuts

Correct Answer: Ductile material ✔

Option A: Is trebled

Option B: Remains unchanged

Option C: Decreases by a factor of 3

Option D: Decreases by a factor of 1/3

Correct Answer: Remains unchanged ✔

Option A: 10

Option B: 50

Option C: 200

Option D: 1000

Correct Answer: 200 ✔

Option A: Octane number of fuel is decreased

Option B: Fuel supply for ignition is not sufficient

Option C: Vaporisation of the fuel is decreased

Option D: Pour point of fuel decreases

Correct Answer: Vaporisation of the fuel is decreased ✔

Option A: Sensible heat carried away by the flue gases

Option B: Heat carried away by the steam from the moisture content of the fuel

Option C: Heat lost by radiation

Option D: Heat carried away by steam from the combustion of hydrogen in the fuel

Correct Answer: Heat carried away by steam from the combustion of hydrogen in the fuel ✔

Option A: Arsenides of heavy metals

Option B: Antimonides of heavy metals

Option C: Arsenides & antimonides of heavy metals

Option D: Iron, cobalt and nickel

Correct Answer: Arsenides of heavy metals ✔

Option A: Working

Option B: Bearing

Option C: Yield

Option D: None of these

Correct Answer: Working ✔

Option A: Wet bulb

Option B: Dry bulb

Option C: Saturation

Option D: Dew point

Correct Answer: Wet bulb ✔

Option A: Motion of dislocations

Option B: Stretching of atomic bonds

Option C: Breakage of atomic bonds

Option D: None of the above

Correct Answer: Motion of dislocations ✔

Option A: Bolt

Option B: Stud

Option C: Top bolt

Option D: None of these

Correct Answer: Stud ✔

Option A: Thermit

Option B: Electrical resistance

Option C: Oxy-acetylene

Option D: Any of these

Correct Answer: Electrical resistance ✔

Option A: Grain size

Option B: Fatigue limit

Option C: Surface hardness

Option D: Wear resistance

Correct Answer: Grain size ✔

Option A: Conduction

Option B: Convection

Option C: Radiation

Option D: Both A. & B.

Correct Answer: Radiation ✔

Option A: Sensible heat is added

Option B: Sensible heat is removed and the latent heat is added

Option C: Latent heat is removed

Option D: Sensible heat is added and latent heat is removed

Correct Answer: Sensible heat is removed and the latent heat is added ✔

Option A: Tempering

Option B: Hardening

Option C: Annealing

Option D: Normalising

Correct Answer: Annealing ✔

Option A: 0.001

Option B: 0.01

Option C: 0.002

Option D: 0.02

Correct Answer: 0.002 ✔

Option A: 10-3

Option B: 103

Option C: 10-15

Option D: 1015

Correct Answer: 10-3 ✔

Option A: Chemical composition

Option B: Carbon content

Option C: Grain size

Option D: Alloying elements content

Correct Answer: Alloying elements content ✔

Option A: Shaft encoder

Option B: Linear variable differential transducer (LVDT)

Option C: Stroboscope

Option D: Tachometer

Correct Answer: Shaft encoder ✔

Option A: Gr0.25, Gr

Option B: Gr0.25, Gr0.33

Option C: Gr, Gr0.25

Option D: Gr0.33, Gr0.25

Correct Answer: Gr0.25, Gr ✔

Option A: Grain refinement

Option B: Increasing corrosion resistance

Option C: Reducing porosity

Option D: Improving fluidity

Correct Answer: Improving fluidity ✔

Option A: 0.5

Option B: 1

Option C: 1/3

Option D: 2.5

Correct Answer: 2.5 ✔

Option A: 10

Option B: 30

Option C: 50

Option D: 80

Correct Answer: 80 ✔

Option A: Grease

Option B: Solid lubricant

Option C: Animal oils

Option D: Mineral oils

Correct Answer: Solid lubricant ✔

Option A: Sand

Option B: Magnesium silicate

Option C: Calcium silicate

Option D: Iron pyrite

Correct Answer: Calcium silicate ✔

Option A: Sulphur stick, which on detection gives white smoke

Option B: Using chemical reagents

Option C: Its smell

Option D: Soap solution

Correct Answer: Sulphur stick, which on detection gives white smoke ✔

Option A: Emissivity of pipe surface

Option B: Diameter & length of the pipe

Option C: Temperature of hot pipe surface & that of air in the room

Option D: None of these

Correct Answer: None of these ✔

Option A: Grashoff number

Option B: Grashoff number & Reynolds number

Option C: Reynolds number

Option D: Grashoff number & Prandtl number

Correct Answer: Grashoff number ✔

Option A: 2.5

Option B: 3.75

Option C: 4.75

Option D: 5.25

Correct Answer: 2.5 ✔

Option A: Ductile & resistant to corrosion/rusting

Option B: Weldable easily

Option C: Having uniform strength in all directions

Option D: Having maximum tensile strength along the lines of slag distribution

Correct Answer: Having uniform strength in all directions ✔

Option A: Rapidly first and then slowly

Option B: Linearly

Option C: Slowly first and then rapidly

Option D: Exponentially

Correct Answer: Rapidly first and then slowly ✔

Option A: Atomisation

Option B: Grinding/milling

Option C: Hammering

Option D: Electrolytic deposition

Correct Answer: Hammering ✔

Option A: I.D. & O.D. of the shaft

Option B: Thickness of parts

Option C: Depth of holes

Option D: Clearance between two mating surfaces

Correct Answer: Clearance between two mating surfaces ✔

Option A: 0

Option B: 1

Option C: ∞

Option D: None of these

Correct Answer: 0 ✔

Option A: Hard

Option B: Soft

Option C: Silicon carbide

Option D: Aluminium oxide

Correct Answer: Aluminium oxide ✔

Option A: Its high melting temperature

Option B: Chances of cracking

Option C: Oxide film formation

Option D: Chromium carbide formation

Correct Answer: Oxide film formation ✔

Option A: Tempering

Option B: Rapid heating

Option C: Rapid cooling

Option D: Slow cooling

Correct Answer: Rapid heating ✔

Option A: Rain

Option B: Cold wave

Option C: Storm

Option D: Fair weather

Correct Answer: Storm ✔

Option A: Limestone

Option B: Iron scrap

Option C: Iron ore

Option D: Pig iron

Correct Answer: Iron ore ✔

Option A: Cementite

Option B: Austenite

Option C: Martensite

Option D: Pearlite

Correct Answer: Austenite ✔

Option A: 500

Option B: 750

Option C: 900

Option D: 1100

Correct Answer: 900 ✔

Option A: Rises in the tube

Option B: Rotates at higher speed

Option C: Rotates at lower speed

Option D: Drops down in the tube

Correct Answer: Rises in the tube ✔

Option A: H2

Option B: CCl4

Option C: C2H2

Option D: S

Correct Answer: CCl4 ✔

Option A: 0.2

Option B: 0.4

Option C: 0.6

Option D: 0.8

Correct Answer: 0.2 ✔

Option A: Stellite

Option B: High speed steel

Option C: Cermet

Option D: Alnico

Correct Answer: Stellite ✔

Option A: Ordinary differential equation of nth order

Option B: Simultaneous non-linear equation

Option C: Linear differential equation

Option D: None of these

Correct Answer: Simultaneous non-linear equation ✔

Option A: Spheroidising

Option B: Annealing

Option C: Tempering

Option D: Normalising

Correct Answer: Annealing ✔

Option A: 0

Option B: 1

Option C: 1/2

Option D: 1/3

Correct Answer: 0 ✔

Option A: Ethyl alcohol

Option B: Carbon tetrachloride

Option C: Glycerol

Option D: Ethylene glycol

Correct Answer: Carbon tetrachloride ✔

Option A: Iron

Option B: Copper

Option C: Rubber

Option D: Nickel

Correct Answer: Copper ✔

Option A: 0.015

Option B: 0.055

Option C: 0.505

Option D: 0.805

Correct Answer: 0.015 ✔

Option A: Elastic limit

Option B: Deflection value

Option C: Fatigue resistance

Option D: None of these

Correct Answer: None of these ✔

Option A: Free chlorine

Option B: Bromine

Option C: Iodine

Option D: Potassium permanganate

Correct Answer: Potassium permanganate ✔

Option A: Cryolite

Option B: Azurite

Option C: Chalcopyrite

Option D: Malachite

Correct Answer: Cryolite ✔

Option A: Point

Option B: Line

Option C: Volume

Option D: None of these

Correct Answer: Line ✔

Option A: Compressive strength

Option B: Hardness

Option C: Abrasion resistance

Option D: Impact strength

Correct Answer: Abrasion resistance ✔

Option A: Nickel

Option B: Copper

Option C: Chromium

Option D: Silicon

Correct Answer: Copper ✔

Option A: SiO2

Option B: FeO

Option C: MgO

Option D: CaO

Correct Answer: SiO2 ✔

Option A: Electrical resistance welding

Option B: Die casting

Option C: Semi-centrifugal casting

Option D: Continuous casting

Correct Answer: Semi-centrifugal casting ✔

Option A: Cementite

Option B: Pearlite

Option C: Martensite

Option D: Ferrite

Correct Answer: Pearlite ✔

Option A: CCl2F2

Option B: CCl3F

Option C: CClF3

Option D: CCl4F

Correct Answer: CCl2F2 ✔

Option A: Water passes through tubes and flue gases around it

Option B: Tube carrying hot flue gases are immersed in a pool of water

Option C: Tubes are placed in vertical position

Option D: None of these

Correct Answer: Water passes through tubes and flue gases around it ✔

Option A: Completely filled

Option B: Partially filled

Option C: Equally filled

Option D: Vacant

Correct Answer: Partially filled ✔

Option A: Silicon

Option B: Carbon

Option C: Phosphorous

Option D: Chromium

Correct Answer: Carbon ✔

Option A: Brass

Option B: Bronze

Option C: German silver

Option D: Cast iron

Correct Answer: Cast iron ✔