chemical engineering MCQs – Page 354

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 Review each marked answer and report any item that may be outdated or unclear.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
7061. Dies for wire drawing are generally made of__________________?
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A. Mild steel

B. Stainless steel

C. High carbon steel

D. Carbides
7062. Phenol is not shipped in________________?
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A. Galvanised or tin lined drums

B. Nickel lined steel tank cars

C. Boxed glass carboys

D. Cast iron containers
7063. Ability of a material to absorb energy in deformation in the plastic range is characterised as its____________________?
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A. Ductility

B. Creep

C. Resilience

D. Toughness
7064. Shock resisting steels should possess high___________________?
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A. Wear resistance

B. Toughness

C. Tensile strength

D. Hardness

7065. Steel rods are used in reinforced concrete to increase its ______________ strength?
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A. Shear

B. Compressive

C. None of these

D. Tensile
7066. Sherardizing process is used for__________________?
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A. Heat treatment of high speed steel

B. None of these

C. Cold working on metals

D. Surface coating
7067. Tempering of steel is done to make it________________?
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A. Hard

B. Rollable

C. Soft

D. Brittle

7068. Which of the following is universally employed as the low expansion metal in the bimetallic thermometer, which is an iron-nickel alloy containing 36% nickel and has very low co-efficient of expansion (1/20th of ordinary metals) ?
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A. Alumel

B. Constantan

C. Invar

D. Chromel

7069. Plasticisers are added to polymers to improve their____________________?
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A. Alkali resistance

B. Tensile strength

C. Acid resistance

D. Softness & flexibility
7070. Babbitt metal (used for making bearings) comprises of__________________?
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A. Zinc and aluminium

B. Copper and aluminium

C. Mainly tin (85%) and lead

D. Saw dust and iron dust mixture

7071. Which of the following has the highest compressive strength ?
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A. High carbon steel

B. Wrought iron

C. Cast iron

D. Mild steel

7072. The temperature at which new grains are formed in the metal is called the ______________ temperature?
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A. Eutectic

B. Upper critical

C. Lower critical

D. Recrystallisation
7073. Zircaloy used as a fuel cladding material in a nuclear reactor (thermal) is an alloy of zirconium_______________?
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A. And copper

B. And graphite

C. Tin, nickel, iron and chromium

D. None of these

7074. Ability of a material to ______________ is indicated by its damping capacity?
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A. Absorb vibration

B. Withstand compression

C. Absorb shock

D. None of these

7075. Which of the following is not a non-ferrous alloy ?
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A. Meehanite

B. Gun metal

C. Magnalium

D. Muntz metal

7076. Nickel (76%) and chromium (15%) alloys are termed as______________________?
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A. Brass

B. Inconel

C. Aluminium bronzes

D. Monel

7077. Slow and progressive deformation of a material with time under constant stress is called___________________?
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A. None of these

B. Erosion

C. Resilience

D. Creep
7078. Softness of silver can be converted into hardness by alloying it with small quantity of_________________?
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A. Copper & nickel

B. Aluminium

C. Tin

D. Zinc

7079. The process of heating the cold pressed metallic powder is called ______________ in powder metallurgy?
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A. Sintering

B. Fusion

C. Precipitation

D. Agglomeration

7080. The presence of impurities in iron_________________?
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A. Increases its melting point

B. Decreases its melting point

C. Makes it malleable

D. Does not affect its melting point