Materials and Construction MCQs

479 MCQs — Chemical Engineering MCQs (Page 21 of 48)

Attempt Materials and Construction Quiz

Tempering of steel is done to make it_________________?

A. Brittle
B. Hard
C. Rollable
D. Soft

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Constantan used in thermocouples is an alloy of___________________?

A. Iron & copper
B. Copper & aluminium
C. Lead & tin
D. None of these

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Nickel and molybdenum are the basic constituents of___________________?

A. Hastelloy
B. German silver
C. Inconel
D. Solder

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Carbon is present in the uncombined (graphitic) form in case of__________________?

A. Cast iron
B. Steel
C. Ferroalloy
D. None of these

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Molybdenum steels containing 0.15 to 0.40% molybdenum___________________?

A. Are prone to temper brittleness
B. Are used for automobile parts like gears, axle, shaft, bearings etc.
C. Have very poor fatigue resistance
D. Do not contain nickel or chromium or both

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The presence of impurities in iron_________________?

A. Increases its melting point
B. Does not affect its melting point
C. Decreases its melting point
D. Makes it malleable

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Hardest materials so far found is_________________?

A. Diamond
B. Graphite
C. Carborundum
D. Pumice stone

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Ball bearings are generally made of___________________?

A. Plain carbon steel
B. Chrome carbon steel
C. Stainless steel
D. Malleable cast iron

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Which of the following constituents of cast iron is mainly responsible for imparting it an anti-corrosive property ?

A. Silicon
B. Phosphorus
C. Sulphur
D. None of these

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Fatigue failure of a material may occur, when it is subjected to _____________ stress?

A. Fluctuating
B. Tensile
C. Compressive
D. Torsion

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