Materials And Construction - Practice Test

(A) 4

(B) 8

(C) 14

(D) 20

(C) 14

(A) Makes it brittle

(B) Increases its strength

(C) Increases its hardness

(D) Is desirable

(A) Makes it brittle

(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

(C) Decreases the blow holes formation tendency in castings

(A) Combined form

(B) Free state as graphite

(C) Both A & B

(D) Neither A nor B

(A) Combined form

(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

(D) Light and resists attack by acids

Materials And Construction - Study Mode