chemical engineering MCQs – Page 41

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 Review each marked answer and report any item that may be outdated or unclear.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

801. The minimum temperature to which the water can be cooled in a cooling tower is the ______________ temperature of air?
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A. Dry bulb

B. Dew point

C. Ambient

D. Wet bulb

802. A material subjected ________________ must have high resilience?
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A. Vibration

B. Fatigue

C. Tension

D. Shock loading

803. The bank of tubes located at the back of the domestic refrigerators are the _______________ tubes?
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A. Throttling

B. Refrigerant cooling

C. Condenser

D. Evaporator

804. Which of the following is not a current asset of a chemical company ?
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A. Marketable securities

B. Inventories

C. Chemical equipments

D. None of these

805. Which of the following phenomenon/ phenomena is/are diffusion controlled ?
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A. Cross-slip

B. Twinning

C. Dislocation climb

D. Recrystallisation

806. If the head is doubled in & centrifugal pump, the power required will increase in the ratio of__________________?
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A. 21/3

B. 25/2

C. 23/2

D. 23

807. The economic life of a large chemical process plant as compared to a small chemical plant is_______________?
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A. Slightly less

B. Only slightly more

C. Much more

D. Almost equal

808. Scheduling provides information about the_________________?
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A. Time of starting of job and also about how much work should be completed during a

B. Time of completion of job

C. Means to minimise idle time for machines

D. Proper utilisation of machines

E. ticular period</strong>

809. Direct costs component of the fixed capital consists of _____________________?
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A. Raw material costs

B. Labour costs

C. Onsite and offsite costs

D. Contingencies

810. An oil is converted into fat by its___________________?
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A. Hydrogenation

B. Hydrolysis

C. Hydrocracking

D. Hydration

811. Personnel working in the market research group is responsible for the job of__________________?
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A. Cost estimation

B. Product evaluation

C. Equipment selection

D. Equipment design

812. Hookes law_______________________?
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A. None of these

B. States that stress is inversely proportional to strain upto elastic limit

C. Applies beyond limit of proportionality in stress-strain curve

D. Applies to elastic deformation

813. Which of the following is the costliest material of construction used in pressure vessel construction ?
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A. Low alloy steel

B. High alloy steel

C. Titanium

D. Lead

814. Function of fusible plug in a boiler is to ______________________?
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A. Put off fire in the furnace when water level in the boiler falls to unsafe limit

B. Drain out water and sludge from the boiler during repair

C. All A, B. & C

D. Guard the boiler in case of abnormal rise in steam pressure

815. While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterized by the ?
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A. High plastic deformation

B. High flexibility

C. Low impact strength

D. Better finish and surface appearance

816. The ratio of working capital to total capital investment for most chemical plants (except for non-seasonal based products) is in the range of _____________ percent ?
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A. 50 to 60

B. 0.1 to 1

C. 1 to 2

D. 10 to 20

817. Boiler draught of 10 mm water column is equivalent to_____________________?
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A. 10 kgf/m2

B. 10 kgf/mm2

C. 1 kgf/mm2

D. 1 kgf/m2

818. Low temperature carbonisation of coal takes place at _______________ C ?
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A. 300

B. 700

C. 900

D. 1100

819. Blue colour is imparted to glass by the addition of__________________?
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A. CaO

B. FeSO4

C. PbO

D. NaOH

820. Functional depreciation of an equipment is the measure of decrease in its value due to its _________________?
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A. Wear and tear

B. Breakdown or accident

C. Obsolescence

D. Ageing

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