Materials and Construction MCQs

479 MCQs  — Chemical Engineering MCQs  (Page 45 of 48)

Copper has very low________________?
A. Malleability
B. Ductility
C. Tensile strength
D. Thermal & electrical conductivity
Which of the following pairs of elements may form an alloy ?
A. Iron & carbon
B. Iron & mercury
C. Platinum & mercury
D. None of these
Sulphur melting pit in the sulphuric acid plant is made of__________________?
A. Lead lined stainless steel
B. Cast iron
C. Steel or cement-brick lined
D. Hard wood
All materials obey Hooke’s law within elastic limit. When elastic limit is reached, the tensile strain__________________?
A. Increases very quickly
B. Decreases very quickly
C. Increases in proportion to stress
D. Decreases in proportion to stress
The addition of antimony in tin-based alloys improves its________________?
A. Rupture strength and hot hardness
B. Impact strength and bonding strength
C. Deformation resistance
D. Wear resistance
Which one is remelted and poured into moulds to get cast iron ?
A. Wrought iron
B. Pig iron
C. Low carbon steel
D. Mild steel
Lead is_____________________?
A. Not resistant to corrosion
B. Used as a cathodic material
C. Not used as pigment (in its compound forms) for paints
D. Used as a shock absorber (in mattress form) between the foundation and steel framework of
White cast iron is not__________________?
A. Malleable
B. Whitish in color
C. Brittle
D. Strong and hard