chemical engineering chemical engineering basics MCQs – Page 22

Practise multiple-choice questions from chemical engineering chemical engineering basics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering chemical engineering basics Mcqs

421. Closeness of packing is maximum in case of ____________________ crystal lattice?
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A. None of these

B. Face centred

C. Body centred

D. Simple cubic

422. For preparation of porous bearings by powder metallurgy, preferred particle shape is___________________?
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A. Spherical

B. Nodular

C. No preferred shape

D. Irregular

423. Desalination of water__________________?
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A. Makes it potable

B. Makes it non-potable

C. Means distillation of water

D. None of these

424. The underground well of a bio gas plant is called the________________?
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A. Oxidation well

B. Digestor

C. Septic tank

D. Lagoon

425. Potable water means the water used for____________________?
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A. Cooling

B. Drinking

C. Fire-fighting

D. Evaporation to produce steam

426. Materials having resistivity ranging from 1 to 100 ohm. cm is termed as___________________?
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A. Conductor

B. Insulator

C. None of these

D. Semi-conductor

427. The usual energy consumption in electric arc furnace steel making is _____________ KWh/ton of steel ?
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A. 1200 -1500

B. 400 700

C. 60 100

D. 2000 2300

428. Fibre glass is a composite material of_________________?
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A. Glass fibre in a polymer matrix

B. Glass fibre in a metallic matrix

C. Polymer fibre in a glassy matrix

D. Both b & c

429. The amount of water evaporated in kg per kg of fuel burnt in a boiler is called the ______________ of a boiler ?
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A. Steam load

B. Evaporative capacity

C. Thermal efficiency

D. Evaporation efficiency

430. Milk is fat dispersed in water. It is an example of__________________?
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A. Solution

B. Suspension

C. Gel

D. Emulsion

431. 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 ?
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A. 0.25 p

B. p

C. 0.5 p

D. 2 p

432. Square steel key is normally strong in failure by shear & crushing. Keys are normally made of _______________ steel bars?
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A. Machinable stainless

B. Hot rolled mild

C. Forged

D. Cold rolled mild

433. Spheroidising of a material is a/an ________________ process?
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A. Normalising

B. Tempering

C. Annealing

D. Hardening

434. In chemical dehumidification of air___________________?
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A. Both specific humidity & dry bulb temperature increases

B. Both specific humidity & dry bulb temperature decreases

C. Specific humidity decreases & dry bulb temperature increases

D. Specific humidity increases & dry bulb temperature decreases

435. Consideration of the creep is the most important in case of the_____________________?
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A. Blades of gas turbine

B. Flywheel of steam engine

C. Piston of an I. C. engine

D. Cycle chain

436. On being hit with a hammer, ___________________ will readily fracture?
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A. Mild steel

B. Brass

C. Cast iron

D. Lead

437. Wood is a/an ______________ material ?
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A. Granular

B. Amorphous

C. Homogeneous

D. Cellular

438. The best guide to judge the general quality of water is the measurement of its__________________?
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A. Electrical conductivity

B. Dissolved oxygen content

C. pH value

D. Turbidity

439. Steel containing low percentage of nickel, chromium & tungsten are termed as the _____________ steel ?
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A. Tool

B. Wrought

C. Plain carbon

D. Alloy

440. At 100% relative humidity, the dew point temperature of moist air is_________________?
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A. Equal to the ambient temperature

B. Less than the wet bulb temperature

C. More than the wet bulb temperature

D. Equal to the wet bulb temperature

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