chemical engineering MCQs – Page 47

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 Review each marked answer and report any item that may be outdated or unclear.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
921. Payback period____________________?
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A. And economic life of a project are the same

B. Is affected by the variation in earnings after the recovery of the investment

C. Is the length of time over which the earnings on a project equals the investment

D. All A, B. and C

922. Fixed charges for a chemical plant does not include the____________________?
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A. Property tax, insurance and depreciation

B. Repair and maintenance charges

C. Interest on borrowed money

D. Rent of land and buildings

923. Which of the following is not a component of depreciation cost ?
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A. Loss due to accident/breakdown in the machinery

B. Loss due to obsolescence of the equipment

C. Loss due to decrease in the demand of product

D. Repairs and maintenance cost
924. Which of the following is not present in bagasse fibre ?
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A. Lignin

B. Pentogens

C. None of these

D. Cellulose

925. The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters in a thermal power plant boiler is the_______________?
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A. Hydrazine addition during feed water treatment

B. Scale formation

C. Release of non-condensable gas from water in the boiler

D. Water alkalinity & leakage

926. The unit of gc is ___________________?
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A. ft/sec2

B. lbm/lbf. sec2/ft

C. lbf/lbm. ft/sec2

D. lbm/lbf. ft/sec2
927. Screws are specified by their _____________ diameters?
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A. None of these

B. Minor

C. Major

D. Pitch

928. Pick out the wrong statement ?
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A. e. net worth + total debt)

B. Return on investment (ROI) is the ratio of profit before interest & tax and capital employed

C. Turn over = opening stock + production closing stock

D. Working capital = current assets + current liability

E. Debt-equity ratio of a chemical company describes the lenders contribution for each rupee of

F. ers contribution i.e., debt-equity ratio = total debt/net worth

929. Equipment installation cost in a chemical process plant ranges from _______________ percent of the purchased equipment cost ?
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A. 55 to 65

B. 10 to 20

C. 70 to 80

D. 35 to 45
930. Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part ?
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A. Annealing

B. Carburising

C. Tempering

D. Anodising

931. The ratio of gross annual sales to the fixed capital investment is termed as the ________________ ratio?
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A. Capital

B. Cash reserve

C. Turnover

D. Investment

932. As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the _____________ joint ?
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A. None of these

B. Butt

C. Welded

D. Lap
933. Heat required to raise the temperature of a body by 1 C is called its_______________?
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A. Specific heat capacity

B. Heat capacity

C. Thermal conductivity

D. Water equivalent

934. Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode________________?
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A. All A, B. & C.

B. Is exemplified by magnesium plate

C. Occurs higher in the electro-chemical series of metals

D. Is much cheaper than the cathodic base material to be guarded against corrosion

935. At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system) ?
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A. P2

B. 1/P

C. P

D. ?P
936. Which of the following ceramic packing materials is the costliest of all ?
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A. Intalox saddles

B. Raschig rings

C. Pall rings

D. Berl saddles
937. Inversion of sucrose produces_____________________?
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A. Fructose

B. Glucose

C. Both A. & B.

D. Neither A. nor B.

938. Lithophane is ___________________?
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A. Explosive

B. ZnS (white pigment)

C. White lead

D. Filter aid

939. Which of the following elements is not included in the scope of market analysis ?
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A. Opportunities

B. Product distribution

C. Competition from other manufactures

D. Economics
940. Cost of instrumentation in a modern chemical plant ranges from _____________________ percent of the total plant cost?
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A. 60 to 70

B. 20 to 30

C. 5 to 10

D. 40 to 50