chemical engineering materials and construction MCQs – Page 2

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 Review each marked answer and report any item that may be outdated or unclear.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
21. Pick out the wrong statement ?
comments icon0
A. Tin can be readily and very easily drawn into very fine wire

B. Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature

C. The predominant use of tin is in the form of coating for steel & copper alloys

D. Tin exists in two allotropic forms

22. Locomotive boiler tubes are made of _____________ alloys?
comments icon0

A. Nickel

B. Magnesium

C. Arsenic copper

D. Aluminium

23. Lead is_____________________?
comments icon0

A. Not resistant to corrosion

B. Used as a shock absorber (in mattress form) between the foundation and steel framework of

C. Not used as pigment (in its compound forms) for paints

D. Used as a cathodic material

E. scraper buildings</strong>

24. ______________ is never shipped in glass carboys?
comments icon0

A. Formaldehyde

B. Ammonia

C. Phenol

D. Acetic acid

25. The formation of oxide film on a metal due to atmospheric exposure reduces its____________?
comments icon0
A. Creep limit

B. Toughness

C. All A., B. & C.

D. Stiffness

26. Most suitable material of construction for the storage of concentrated nitric acid is__________________?
comments icon0

A. Cast iron

B. Monel

C. Aluminium or chromium alloys (Cr > 18% for cold acid)

D. Karbate

27. Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100C ?
comments icon0
A. Stainless steel

B. Monel

C. Graphite

D. Kel-F and Teflon

28. ______________ possesses viscoelastic properties?
comments icon0

A. Glass

B. Graphite

C. Cork

D. Rubber
29. The range of Mhos scale of hardness is from________________?
comments icon0
A. 1 to10

B. 1 to 8

C. 1 to 15

D. 0 to 10

30. White cast iron is not__________________?
comments icon0

A. Whitish in color

B. Malleable

C. Brittle

D. Strong and hard

31. Steel tower used for the storage of oleum________________?
comments icon0

A. Is lined with lead

B. Need not be lined

C. Is lined with acid-proof bricks

D. Is lined with rubber

32. Mercury is transported in metal containers made of________________?
comments icon0

A. Nickel

B. Lead

C. Aluminium

D. Iron
33. Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)___________________?
comments icon0

A. Do not require heat treatment for any of its applications

B. Are used for leaf and coiled springs

C. Do not have good resilience properties

D. Is tempered at 850C

34. Pick out the wrong statement ?
comments icon0
A. Presence of silicon in steel decreases its electrical resistance

B. Nichrome, a steel alloyed with 10% Ni and 20% Cr can be used upto a temperature of 1100C

C. Alloys are harder than their component elements

D. Karbate is an acid resistant material of construction

35. In the Contact process of sulphuric acid manufacture, 98% acid cooler is made of_____________________?
comments icon0

A. Rubber lined steel

B. Lead lined steel

C. Cast iron

D. Stainless steel

36. The softest material just next to talc in the Mhos scale is_________________?
comments icon0

A. Feldspar

B. Fluorite

C. Quartz

D. Gypsum
37. Wood is corroded by__________________?
comments icon0
A. All A., B. and C.

B. Chlorine (dry or wet)

C. SO2 (dry or wet)

D. Hydrochloric acid

38. Pick out the wrong statemen?
comments icon0

A. Hardening makes the steel more brittle

B. High alloy steels contain more than 50% alloying element

C. 18/8 stainless steel is a magnetic steel

D. Both B. and C.
39. Pick out the wrong statement?
comments icon0

A. Pure rubber is as useless as pure gold as a material of construction

B. Thermal conductivity of aluminium is higher than that of copper; hence it is increasingly used for utensil making

C. Copper has poor weldability

D. Reinforced plastics are made from both thermoplastic as well as thermosetting plastics

40. Which metal is protected by the layer of its own oxide ?
comments icon0

A. Calcium

B. Iron

C. Silver

D. Aluminium