chemical engineering MCQs – Page 368

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 Review each marked answer and report any item that may be outdated or unclear.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

7341. Example of an indirectly heated furnace is__________________?
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A. Hood annealing furnace

B. Muffle furnace

C. Both A. and B.

D. Neither A. nor B.

7342. If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an ______________ furnace?
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A. Sidefired

B. Covered

C. Recirculating

D. Underfired

7343. Hearth furnaces are not used for____________________?
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A. Melting

B. Roasting

C. Reheating

D. None of these

7344. Select the correct statement?
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A. tically downward through it, than when the flow is vertically upward

B. A Venturimeter with a given gage difference discharges at a greater rate, when the flow is

C. h the same throat dia is used

D. The discharge through a Venturimeter depends upon ?p only and is independent of

E. For a given pressure difference, the discharge of gas is greater through a Venturimeter, when

F. The overall pressure loss is the same in a given pipe line, whether a Venturimeter or a nozzle

7345. Which of the following is the easiest to bend ?
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A. Cast iron

B. Stainless steel

C. Steel

D. Wrought iron

7346. Pipes for bi-cycle frames are made of _____________ steel?
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A. Hot rolled

B. Chrome carbon

C. Cold rolled

D. Stainless

7347. Specific heating capacity of a furnace is expressed as_____________________?
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A. Weight heated/furnace volume

B. Weight heated/hr/furnace volume

C. None of these

D. Weight heated/hr

7348. Design of waste heat boiler for recovery of waste heat from furnace gases depends upon the_________________?
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A. Dust concentration & nature of dust in waste gas

B. Quantity & temperature of waste gas

C. Corrosive nature of the waste gas

D. All A., B. and C.

7349. Regenerators compared to the recuperators for the same duty__________________?
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A. Are of smaller size

B. All A., B. and C.

C. Are less costly

D. Occupy more space

7350. The resistance furnace produces heat by the__________________?
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A. Combination of induced current and skin effect

B. None of these

C. Electric arc struck between electrodes and the charge

D. Flow of current through a heating element

7351. The purpose of controlling the furnace atmosphere is to prevent surface attack by__________________?
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A. Either of the above

B. Oxidation/scaling

C. Sulphur penetration

D. Decarburising

7352. Which furnace employs an I.D. fan for the removal of flue gases from the furnace ?
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A. Coke oven

B. High pressure boiler

C. Blast furnace stoves

D. Beehive coke oven

7353. ______________ possesses viscoelastic properties?
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A. Graphite

B. Glass

C. Cork

D. Rubber

7354. Wood is corroded by__________________?
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A. SO2 (dry or wet)

B. Chlorine (dry or wet)

C. Hydrochloric acid

D. All A., B. and C.

7355. Perspex is nothing but_____________________?
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A. An alloy of lead and tin

B. Acrylic sheet

C. An elastomer

D. Aluminium foil clad with Bakelite

7356. ______________ is an indirectly heated furnace?
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A. Muffle furnace

B. Soaking pit

C. Reheating furnace

D. Open hearth furnace

7357. Fuel used in B.F. stove is______________________?
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A. Coke oven gas

B. Pulverised coal

C. Furnace oil

D. Blast furnace gas/mixed gas

7358. Rotary kilns are used in the____________________?
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A. Calcination of limestone & dolomite

B. Cement manufacture

C. Both A. and B.

D. Neither A. nor B.

7359. Which of the following alloys does not contain nickel ?
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A. Inconel

B. Chlorinet 2 alloy

C. Babbitt metal

D. Monel

7360. Tank furnace used for melting of glass is made of___________________?
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A. Refractory blocks

B. Cast iron

C. Stainless steel

D. Mild steel

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