Material Science And Metallurgy (3131904) MCQ

MCQs of Allotropy of Iron, Iron-Iron-Carbide equilibrium system

MCQ No - 1

The percentage of carbon in cast iron varies from

(A)

0.1 to 0.5

(B)

0.5 to 1

(C)

0.5 to 1

(D)

2 to 4.5


D
MCQ No - 2

Nodular cast iron is produced by adding __________ to the molten cast iron.

(A)

nickel

(B)

chromium

(C)

Copper

(D)

Magnesium


D
MCQ No - 3

Grey cast iron has

(A)

carbon in the form of free graphite

(B)

high tensile strength

(C)

low compressive strength

(D)

all of these


A
MCQ No - 4

The carbon in the pig iron varies from

(A)

0.1 to 0.5%

(B)

0.5 to 1%

(C)

1 to 5%

(D)

5 to 10%


C
MCQ No - 5

According to Indian standard specifications, SG 400/15 means

(A)

spheroidal graphite cast iron with B.H.N. 400 and minimum tensile strength 15 MPa

(B)

spheroidal graphite cast iron with minimum tensile strength 400 MPa and 15 percent elongation

(C)

spheroidal graphite cast iron with minimum compressive strength 400 MPa and 15 percent reduction in area

(D)

none of the above


B