chemical engineering chemical engineering basics MCQs – Page 27

Practise multiple-choice questions from chemical engineering chemical engineering basics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering chemical engineering basics Mcqs

521. Spark plug is provided in a/an_________________?
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A. Engine having carburettor

B. Diesel engine

C. Compression ignition engine

D. Both B. & C.

522. Speed of a submarine in deep sea & that of an aeroplane is measured by a/an___________________?
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A. Stroboscope

B. Rotameter

C. Pitot tube

D. Hot wire anemometer

523. Percentage of argon (by volume) in dry atmospheric air is about________________?
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A. 0.94

B. 0.57

C. 0.3

D. 0.09

524. _______________ rubber is generally used for making O rings used for vacuum sealings?
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A. Butadiene

B. Natural

C. Neoprene

D. Nitrile

525. The condition of diffraction from a crystal is given by______________?
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A. n? = 2d Sin ?

B. n? = d Sin ?

C. ? = 2d Sin 2?

D. ? = d Sin 2?

526. 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

527. Metallic surveying tapes are made of _____________ which has a low co-efficient of expansion & enough strength ?
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A. Duralumin

B. Invar

C. Hastelloy

D. Monel metal

528. In electrical resistance welding, distortion results from the use of improper________________?
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A. Clamping methods

B. Electrodes

C. Filler material

D. Current

529. Temperature attained in soldering of metals is about ________________ C?
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A. 1000-1100

B. 650-800

C. 400-500

D. 150-300

530. Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is__________________?
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A. Green

B. Yellow

C. Black

D. Silver grey

531. Addition of ____________________ to steel does not help in improving its machinability?
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A. Silicon

B. Phosphorous

C. Lead

D. Sulphur

532. Cold chisel & hammers are made of_________________?
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A. Forged steel

B. High speed steel

C. Mild steel

D. High carbon steel

533. In case of brasses, with decreasing zinc percentage and increasing copper percentage, its _____________ increases ?
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A. Tensile strength

B. Percentage elongation

C. Brinell hardness

D. All A, B & C

534. Production of a hollow product by inflation of a tube or parison is called the _______________ process?
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A. Injection

B. Blow moulding

C. Calendaring

D. Extrusion

535. Hot & cold working of material causes its _______________ deformation?
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A. Elastic

B. Visco-elastic

C. Isotropic

D. Plastic

536. A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness ______________ metre?
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A. 0.25

B. 0.5

C. 0.1

D. 0.01

537. With increasing carbon percent in steel beyond 0.8%, its ultimate tensile strength (UTS) and _____________ is not affected ?
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A. Impact strength

B. Percent elongation

C. Hardness

D. Both B & C

538. 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. Any

C. Horizontal

D. Vertical

539. _________________ is not a heat treatment process ?
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A. Martempering

B. Austempering

C. Parkerizing

D. Cyaniding

540. Which of the following terminology is used for the temperature at which new grains are formed in a metal ?
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A. Lower critical temperature

B. Eutectic temperature

C. Upper critical temperature

D. Recrystallisation temperature

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