Materials and Construction MCQs

479 MCQs — Chemical Engineering MCQs (Page 46 of 48)

Attempt Materials and Construction Quiz

Which metal is protected by the layer of its own oxide ?

A. Iron
B. Silver
C. Calcium
D. Aluminium

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Aluminium as a material of construction suffers from the disadvantage of__________________?

A. Very high cost
B. Rather low tensile strength
C. Very low strength to weight ratio
D. Scarce availability

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Nickel made/clad equipments are suitable for handling________________?

A. Ammonia (both aqueous & anhydrous)
B. Fruit juices, milk & its products and caustic soda solution
C. Nitric acid & hydrochloric acid (concentrated)
D. Sulphuric acid (concentrated)

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Steel tower used for the storage of oleum________________?

A. Is lined with lead
B. Need not be lined
C. Is lined with rubber
D. Is lined with acid-proof bricks

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A suitable material of construction to use with fuming sulphuric acid is_________________?

A. Carbon steel
B. Stainless steel type 304
C. Nickel
D. Monel

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Most suitable material of construction for the storage of concentrated nitric acid is__________________?

A. Cast iron
B. Monel
C. Karbate
D. Aluminium or chromium alloys (cr > 18% for cold acid)

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Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C ?

A. Monel
B. Stainless steel
C. Graphite
D. Kel-f and teflon

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The formation of oxide film on a metal due to atmospheric exposure reduces its____________?

A. Toughness
B. Stiffness
C. Creep limit
D. All a., b. & c.

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An elastic behaviour of materials is expressed in terms of_______________?

A. Hysteresis loop area
B. Stress-strain curve
C. Relaxation time
D. None of these

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Fatigue strength of a material increases by_____________________?

A. Having notches in the specimen
B. Rise in temperature
C. Under stressing the specimen
D. Having scratches on the surface

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