chemical engineering materials and construction MCQs – Page 3

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 Review each marked answer and report any item that may be outdated or unclear.

chemical engineering materials and construction Mcqs
41. Aluminium as a material of construction suffers from the disadvantage of__________________?
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A. Very high cost

B. Scarce availability

C. Rather low tensile strength

D. Very low strength to weight ratio

42. Fatigue strength of a material increases by_____________________?
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A. Under stressing the specimen

B. Rise in temperature

C. Having scratches on the surface

D. Having notches in the specimen

43. Which of the following has the least carbon percentage ?
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A. Low carbon steel

B. White cast iron

C. Wrought iron

D. Mild steel

44. Wrought iron is ____________________?
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A. An alloy of iron, chromium & carbon

B. Malleable & ductile; and hence is used for chain links, hooks & couplings

C. High carbon iron

D. Highly resistance to acid corrosion

45. Balls in a ball mill are usually made of__________________?
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A. Cast iron

B. Steel

C. Stainless steel

D. Bronze

46. Which of the following stainless steels is non-magnetic ?
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A. Austenitic

B. None of these

C. Martenistic

D. Ferritic

47. The addition of antimony in tin-based alloys improves its________________?
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A. Rupture strength and hot hardness

B. Impact strength and bonding strength

C. Deformation resistance

D. Wear resistance

48. Photographic plates are coated with_________________?
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A. Silver nitrate

B. Metallic silver

C. Silver halide

D. Calcium silicate

49. Galvanising is not a zinc diffusion process. A zinc diffusion process is termed as_____________________?
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A. Anodising

B. None of these

C. Parkerising

D. Sherardizing
50. 18-4-1 high speed steel contains 18%, 4% and 1% respectively of____________________?
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A. Vanadium, chromium and tungsten

B. Tungsten, vanadium and chromium

C. Chromium, tungsten and vanadium

D. Tungsten, chromium and vanadium
51. Zircaloy used as a fuel cladding material in a nuclear reactor (thermal) is an alloy of zirconium_______________?
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A. And graphite

B. Tin, nickel, iron and chromium

C. And copper

D. None of these

52. Cast irons are generally specified by their_________________?
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A. Manufacturing process

B. Carbon content

C. Hardness

D. Tensile strength
53. Fatigue failure of a material may occur, when it is subjected to _____________ stress?
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A. Torsion

B. Fluctuating

C. Tensile

D. Compressive

54. Nickel and copper are the basic constituents of__________________?
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A. German silver

B. Monel metal

C. Hastelloy

D. Inconel

55. Cermets are ______________ materials?
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A. Reinforced

B. Fully metallic

C. Abrasive

D. Refractory
56. Babbitt metal is not a___________________________?
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A. Tin base alloy

B. Lead base alloy

C. White metal

D. Pure metal
57. The maximum percentage of chromium that can be added to steel is about____________________?
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A. 24

B. 12

C. 30

D. 18
58. Tempering of steel is done to make it_________________?
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A. Hard

B. Rollable

C. Brittle

D. Soft
59. Presence of high amount of silicon in cast iron________________?
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A. Increases the contraction of the metal

B. Reduces its fluidity

C. Suppresses the decomposition of Fe3C

D. Increases the formation of graphite
60. Hot working of lead is carried out at_________________?
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A. 373 K

B. 75 C

C. 150 C

D. Room temperature