chemical engineering MCQs – Page 45

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 Review each marked answer and report any item that may be outdated or unclear.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
881. With increase in the discounted cash flow rate of return, the ratio of the total present value to the initial investment of a given project ?
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A. Increases linearly

B. Decreases

C. Increases

D. Remain constant

882. Blow off cock is provided in steam boiler to ____________________?
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A. Drain out water and sludge during its repair

B. Put out the fire in the furnace when the water level in the boiler falls to unsafe limit

C. Regulate the supply of water in boiler

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

883. Effective and nominal interest rates are equal, when the interest is compounded__________________?
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A. Fortnightly

B. Half-yearly

C. Annually

D. Monthly

884. Out of the following substances, one ton of ______________ will store the maximum heat for a rise of 30C in temperature ?
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A. Lignite

B. Lime stone

C. Water

D. Steel

885. Nitrile rubber is produced by the polymerisation of__________________?
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A. Isobutylene and isoprene

B. None of these

C. Acrylonitrile and styrene

D. Acrylonitrile and butadiene
886. Pick out the wrong statement ?
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A. The X-rays cannot be deflected by electric field unlike cathode rays

B. gas by X-rays

C. The quality of X-rays can be controlled by varying the anode-cathode voltage

D. Crystal structure of a material can be studied by an electron microscope

E. The intensity of X-rays can be measured by ionisation current produced due to the ionisation

887. Common salt is produced from sea water in India generally by the ________________ method?
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A. None of these

B. Solar evaporation

C. Freeze drying

D. Electrolytic

888. The ability of tool steel to resist softening at high temperatures is termed as __________________ hardness?
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A. Super

B. Extended

C. Red

D. Extreme

889. Utilities cost in the operation of chemical process plant comes under the ?
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A. General expenses

B. Direct production cost

C. Plant overhead cost

D. Fixed charges

890. Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in ______________ position ?
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A. Inclined

B. Vertical

C. Any

D. Horizontal

891. A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalent bonds resulting in _______________ electrons ?
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A. None of these

B. Lack of free

C. Excess of

D. Decrease in

892. A reactor having a salvage value of Rs. 10000 is estimated to have a service life of 10 years. The annual interest rate is 10%. The original cost of the reactor was Rs. 80000. The book value of the reactor after 5 years using sinking fund depreciation method will be Rs _____________?
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A. 60,196

B. 53,196

C. 43,196

D. 40,096

893. Break-even point is the point of intersection of_____________________?
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A. Fixed cost and total cost

B. Fixed cost and sales revenue

C. None of these

D. Total cost and sales revenue
894. In inventory control theory, the economic order quantity (EOQ) is the____________________?
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A. Average level of inventory

B. None of these

C. Optimum lot size

D. Lot size corresponding to break even analysis

895. Which of the following fastening devices has its both ends threaded ?
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A. Stud

B. Split nut

C. Bolt

D. Set screw

896. Though tin occurs lower than iron in the electrochemical series, yet it is coated on steel for corrosion protection, because of its________________?
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A. Resistance to vegetable acids as the tin plate are commercially used in canning industry

B. None of these

C. Abundant availability

D. Lower cost

897. A steam pipe is intended to be insulated with two layers of insulating materials of different thermal conductivities. For minimum heat transfer to take place_________________?
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A. Either of the insulating material could be put on either side

B. The better insulating material should be put outside

C. The better insulation material should be put just next to pipe (i.e., inside)

D. ide (i.e., just next to the pipe)

E. Steam temperature is considered before deciding as to which insulating material is to be put

898. Total product cost of a chemical plant does not include the ______________ cost?
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A. Depreciation, property tax and insurance

B. Operating labour, supervision and supplies

C. Market survey

D. Overhead and utilities

899. Which of the following is not a product of coal tar distillation ?
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A. None of these

B. Anthracene

C. Creosote oil

D. Carbolic oil

900. Removal of non-condensable from steam or other vapour is termed as the ________________ process?
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A. Deaeration

B. Condensation

C. Exhaust

D. Scavenging