chemical engineering materials and construction MCQs – Page 5

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 Review each marked answer and report any item that may be outdated or unclear.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
81. Valves in pipe size of 2? and under are normally made of_______________________?
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A. Monel

B. Bronze

C. Brass

D. Wrought iron

82. Work hardening of a material ________________?
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A. Decreases its ductility

B. Does not affect its ductility

C. Increases its ductility

D. Decreases its tensile strength

83. Heavy duty bearings are usually made of___________________?
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A. Phosphorous bronze

B. Monel

C. White metal

D. Zinc

84. Plastics are____________________?
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A. Not suitable for drainage pipe manufacture

B. All A., B. & C.

C. Non-biodegradable

D. Used in very high temperature applications

85. The heat treatment process to which castings and the steel balls produced by cold heading are subjected is____________________?
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A. Tempering

B. Normalising

C. None of these

D. Annealing

86. Ability of a material to absorb energy in deformation in the plastic range is characterised as its____________________?
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A. Ductility

B. Toughness

C. Creep

D. Resilience

87. Babbitt metal used for bearings is a ____________base alloy?
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A. Aluminium

B. Lead

C. Copper

D. Tin
88. Presence of high phosphorous in cast iron increases its____________________?
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A. Fluidity

B. Tensile strength

C. Shrinkage

D. Melting point

89. The fermenter used in the production of penicillin (by deep fermentation process) is made of___________________?
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A. Glass lined steel

B. Glass

C. High silicon cast iron

D. Porcelain

90. Galvanising (i.e., zinc coating) of steel sheets is done to______________________?
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A. Prevent its rusting by contact with corrosive atmosphere

B. Protect the base metal by cathodic protection

C. Both A. & B.

D. Neither A. nor B.

91. Brass is an alloy of____________________?
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A. Nickel and tin

B. Tin and lead

C. Copper, nickel and zinc

D. Copper and zinc
92. Sulphuric acid pickling tanks are lined with__________________?
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A. Nickel

B. Glass

C. Aluminium

D. Rubber
93. German silver in an alloy of________________?
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A. Copper, aluminium and silver

B. Silver, zinc and aluminium

C. Silver, nickel and zinc

D. Copper, nickel and zinc
94. Hardest materials so far found is_________________?
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A. Diamond

B. Graphite

C. Carborundum

D. Pumice stone

95. Which of the following is not a nickel based alloy ?
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A. Nimonics

B. Babbitt metal

C. Inconel

D. Hastelloys

96. Constantan used in thermocouples is an alloy of___________________?
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A. Copper & aluminium

B. Iron & copper

C. Lead & tin

D. None of these
97. 100% H2SO4 at 30C cant be stored in a vessel made/lined with ___________________?
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A. Aluminium, tin and rubber

B. Cast iron and high silicon iron

C. Teflon, glass and porcelain

D. Mild steel and stainless steel

98. Constantan is an alloy of____________________?
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A. Cu (55%) & Ni (45%)

B. Pt (95%) & Rh (10%)

C. Cu (55%) & Sn (45%)

D. Fe (80%) & Ni (20%)

99. Percentage of silver in German silver is__________________?
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A. 10

B. 0

C. 5

D. 20

100. Graphite is a good________________?
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A. Thermal & electrical insulator

B. Conductor of heat

C. Conductor of electricity

D. Both B. & C.