Materials and Construction MCQs

479 MCQs  — Chemical Engineering MCQs  (Page 1 of 48)

Practice Materials and Construction MCQs with correct answers and explanations. These questions are from the Chemical Engineering MCQs section.

Containers made of high silicon cast iron (14% Si) are not suitable for the storage of ____________________?
A. Acetic acid
B. Benzoic & boric acids
C. Phosphoric acid (95%) & sulphuric acid (95%)
D. Hydrochloric acid (concentrated)
Alinco, which is a aluminium-cobalt-nickel steel, is used for making __________________?
A. Surgical instruments
B. Powerful magnets
C. Chemical equipments
D. Boiler tubes
‘Age hardening’ of duralumin is due to____________________?
A. Copper
B. Magnesium
C. Both a. & b.
D. Neither a. nor b.
In cold working of metal as compared to its hot working____________________?
A. Cracks and blow holes are eliminated
B. Ductility and impact strength improves
C. Appreciable strain hardening is produced
D. Yield stress, hardness and fatigue strength is not at all affected
Spark plugs are made of______________________?
A. High alumina ceramic
B. Metallic carbides
C. Corundum
D. Carborundum
Lead pipe is_____________________?
A. Especially resistant to solutions containing h2so4
B. Usually joined by burning (e.g. by melting to adjacent pieces with a torch)
C. Having very low elastic limit resulting in permanent deformation from either mechanical or
TheRmal strain
Cast iron is having very high ___________________?
A. Proximity between its elastic limit and ultimate breaking strength
B. Ductility
C. Tensile strength
D. All a., b. and c.