chemical engineering chemical engineering basics MCQs – Page 21

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 Review each marked answer and report any item that may be outdated or unclear.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
401. Hydro-cyclone is a____________________?
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A. Dry classifier

B. Crusher

C. wet classifier

D. Magnetic separator

402. Half life of a radioactive isotope corresponds to the time required for half of the _______________ to decay ?
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A. Atoms

B. Neutrons

C. Nucleons

D. Electrons

403. The following thermocouple may be used for measuring temperature upto 1873K__________________?
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A. Chromel-alumel

B. Platinum-platinum rhodium

C. Iron-constantan

D. Copper-constantan

404. Work done by a/an _________________ process is determined by ?p. dv ?
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A. Isothermal

B. Isentropic

C. Quasi-static

D. Adiabatic

405. Which of the following performance characteristics of a S.I engine is not affected by the front end volatility of the petrol used ?
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A. All A, B & C

B. Hot starting

C. Spark plug fouling

D. Vapour locking

406. Rankine cycle comprises of two isothermal and two ___________________ processes?
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A. Polytropic

B. Isobaric

C. None of these

D. Isentropic

407. The following type of bonding is strongly directional in solids ?
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A. Covalent

B. Vander Waals

C. Metallic

D. Ionic

408. Speisses is a mixture of the following ?
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A. Arsenides & antimonides of heavy metals

B. Antimonides of heavy metals

C. Iron, cobalt and nickel

D. Arsenides of heavy metals
409. Globular form of cementite is formed during the _________________ process ?
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A. Annealing

B. Normalising

C. Hardening

D. Spheroidising

410. Corrosion of metals cannot be prevented by its__________________?
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A. Chromising

B. Alloying

C. Aluminising

D. Tempering
411. Absolute zero, pressure will occur, when the molecular momentum of the system becomes zero. A liquid will cease to exist as liquid at________________?
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A. Earths centre

B. Zero pressure

C. 0K

D. High vacuum

412. Out of the following _______________ iron has the best capability to bear sudden & excessive shocks?
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A. White

B. Cast

C. Wrought

D. Pig

413. Capacity & power requirement for an air compressor working at high altitude compared to sea-level will be_______________?
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A. Same

B. Less

C. Either more or less; depends on the climatic conditions

D. More

414. Out of the following, the joint produced by ______________ has the lowest strength?
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A. Welding

B. Riveting

C. Brazing

D. Soldering
415. Cemented carbide tools are not suitable for cutting___________________?
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A. Steel

B. Aluminium

C. Brass

D. Cast iron

416. _______________ is the hardest oxide and is hence used where high wear resistance at high temperature is required?
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A. Magnesia

B. Zirconia

C. Beryllium

D. Alumina
417. Baffles provided on the shell side of a shell and tube heat exchanger are meant for _____________________?
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A. Providing support for the tubes

B. Improving heat transfer

C. Both A & B

D. Preventing the fouling of tubes & stagnation of shell side fluid

418. ____________________ are normally subjected to sub-zero treatment?
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A. Non machinable materials

B. Highly stressed parts

C. Cold rolled sheets

D. Gauges or precision parts
419. Fatigue resistance of a material is measured by the _____________________?
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A. Elastic limit

B. Ultimate tensile strength

C. Endurance limit

D. Youngs modulus

420. Which of the following is preferred for riveting ?
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A. Lap joint

B. Butt joint

C. Neither A. nor B.

D. Either A. or B.