chemical engineering MCQs – Page 16

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 Review each marked answer and report any item that may be outdated or unclear.

chemical engineering Mcqs
301. The expected efficiency of a single riveted lap joint is of the order of 50%. If the thickness of the plate is increased four times, then the rivet diameter will have to be increased ___________________ times ?
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A. Eight

B. Six

C. Two

D. Four

302. Ultimate strength in tension as compared to that in shear for steel is____________________?
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A. One and half times

B. One fourth

C. One third

D. Half

303. Angular displacement can be measured suitably by a______________________?
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A. Stroboscope

B. Shaft encoder

C. Linear variable differential transducer (LVDT)

D. Tachometer

304. Cemented carbide tools are not suitable for cutting___________________?
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A. Steel

B. Brass

C. Aluminium

D. Cast iron

305. Suitability of steel for its use in cable is judged by its strength in__________________?
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A. Compression

B. Shear

C. Torsion

D. Tension
306. The elastic strain in copper is due to the__________________?
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A. Breakage of atomic bonds

B. Stretching of atomic bonds

C. Motion of dislocations

D. None of the above

307. According to thermodynamic Fahrenheit scale, the fundamental interval between ice point to steam point is__________________?
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A. 32

B. 212

C. 273

D. 180
308. The maximum thickness of the metal which can be welded using ultrasonic welding is _____________ mm ?
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A. 25

B. 0.5

C. 10

D. 3
309. Which of the following rays has the least wavelength ?
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A. Infrared rays

B. X-rays

C. Cosmic rays

D. Ultraviolet rays

310. _________________ is the most suitable lubricant for drawing mild steel wires?
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A. Lime water

B. Sodium stearate

C. Water

D. Kerosene

311. Absolute zero pressure can be attained at a temperature of___________________?
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A. 0R

B. 50K

C. None of these

D. 0C

312. Steel balls are manufactured by_____________________?
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A. Casting

B. Spinning

C. Cold heading

D. Sintering

313. Powder metallurgy process does not make metal powder by_________________________?
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A. Hammering

B. Atomisation

C. Electrolytic deposition

D. Grinding/milling

314. __________________ is used for tying the steel columns to concrete foundation?
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A. Eyebolt

B. Refractory castables

C. Grouting

D. Anchor bolts
315. One ton of refrigeration is not equivalent to the heat removal rate of ____________________?
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A. 3.5 KW

B. 200 BTU/minute

C. 50 kcal/minute

D. 50 kJ/sec
316. For a spontaneous natural process at constant temperature and pressure, the free energy of the system always____________________?
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A. Remain constant

B. Decreases

C. Increases

D. Increases to a maximum before decreasing

317. Water-tube boiler is the one, in which _____________________?
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A. Tube carrying hot flue gases are immersed in a pool of water

B. wer: Option A

C. None of these

D. Tubes are placed in vertical position

E. Water passes through tubes and flue gases around it
318. Nuclear fission of one atom of uranium-235 produces the energy equivalent to about ____________ MeV?
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A. 200

B. 2000

C. 500

D. 20

319. Oxyacetylene reducing flame is used while carrying out welding on___________________?
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A. Grey cast iron

B. High carbon steel

C. Alloy steel

D. Mild steel
320. Faradays law of electrolysis is related to the____________________?
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A. None of these

B. Equivalent mass of the electrolyte

C. Atomic number of the cation

D. Cation speed