Materials And Construction MCQ Questions & Answers | Chemical Engineering

A. Makes it brittle

B. Increases its strength

C. Increases its hardness

D. Is desirable

A. Is in the form of free Si

B. Indicates that steel is not deoxidised properly

C. Decreases the blow holes formation tendency in castings

D. None of these

A. Combined form

B. Free state as graphite

C. Both A & B

D. Neither A nor B

A. Highly corrosion resistant and is readily fabricated

B. Relatively inexpensive although it can be fabricated with some difficulty

C. Corrosion resistant to most alkalis, particularly because of its coper content

D. Light and resists attack by acids

A. Lead lined steel

B. Stainless steel

C. Aluminium

D. Cast iron

A. Ferromagnetic above its curie point (i.e., 415°C)

B. Having h.c.p. crystal lattice

C. Ferromagnetic at room temperature

D. Not resistant to oxidation at high temperature

A. High strength to weight ratio

B. Low temperature strength properties

C. Its ability to be cast, rolled, forged & stamped

D. High strength and corrosion & oxidation-resistance at elevated temperature

A. Tin

B. Lead

C. Aluminium

D. Copper

A. Unsaturated polyester

B. Polypropylene

C. Polyurathane

D. Nylon-6

A. Topax

B. Carborundum

C. Corrundum

D. Calcite