A. Yield stress decreases
B. Elongation percent increases
C. Tensile strength increases
D. Impact strength increases
✅ The correct answer is option C.
Basic Chemical Engineering MCQs
Practice Basic Chemical Engineering MCQs with answers and explanations to prepare for exams, interviews, and job tests. Our question bank covers fundamental topics such as units and dimensions, material and energy balances, fluid mechanics, thermodynamics, heat transfer, mass transfer, and chemical process basics. These multiple-choice questions are designed for students, fresh graduates, and competitive exam aspirants preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and recruitment assessments. Strengthen your core concepts and problem-solving skills with our updated Basic Chemical Engineering MCQs.
692. Dryness factor of steam is defined as the ratio of the mass of vapor in the mixture to the mass of the mixture. Dryness factor of steam is measured by a __________ calorimeter.
A. Bomb
B. Throttling
C. Junker’s
D. Boy’s
✅ The correct answer is option B.
693. Measurement of the area of the indented surface is not involved in the __________ hardhes testing method.
A. Vicker’s
B. Rockwell
C. Knoop
D. Brinell
✅ The correct answer is option B.
694. Which of the following is not an ore of aluminium?
A. Troosite
B. Kaolin
C. Alunite
D. Cryolite
✅ The correct answer is option A.
695. Which of the following will resist maxi-mum shock & vibration without cracking?
A. Grey cast iron
B. White cast iron
C. Malleable iron
D. Graphite
✅ The correct answer is option C.
696. To improve the machinability of steel, it is generally subjected to
A. Spherodising
B. Tempering
C. Normalising
D. Annealing
✅ The correct answer is option A.
697. Absolute zero pressure can be attained at a temperature of
A. 0°C
B. 50°K
C. 0°R
D. None of these
✅ The correct answer is option C.
698. __________ are normally subjected to sub-zero treatment.
A. Highly stressed parts
B. Gauges or precision parts
C. Cold rolled sheets
D. Non machinable materials
✅ The correct answer is option B.
699. Cathodic protection is widely used in controlling corrosion in
A. High pressure vessels
B. Marine structure & underground pipelines
C. Overhead fuel gas pipelines
D. Overhead water pipelines
✅ The correct answer is option B.
700. __________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently.
A. Collar
B. Flanged
C. Bell and Spigot
D. Expansion
✅ The correct answer is option B.