The metallic structure of mild steel is_________________?

Related Mcqs:

1. Mild steel belongs to the following category___________________?

   A. low carbon steel
   B. medium carbon steel
   C. high carbon steel
   D. alloy steel
   E. special steel

2. A reversible change in the atomic structure of steel with corresponding change in the properties is known as___________________?

   A. molecular change
   B. physical change
   C. allotropic change
   D. solidus change
   E. atomic change

3. A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as_________________?

   A. allotropic change
   B. recrystallisation
   C. heat treatment
   D. precipitation
   E. austempering

4. The crystal structure of gamma iron is_________________?

   A. body centred cubic
   B. face centred cubic
   C. hexagonal close packed
   D. cubic structure
   E. orthorhombic crystal

5. The crystal structure of brass is_________________?

   A. F.C.C.
   B. B.C.C.
   C. H.C.P.
   D. Orthorhombic crystalline structure
   E. none of the above

6. Steel made from phosphatic iron is_________________?

   A. brittle
   B. hard
   C. ductile
   D. tough
   E. malleable

7. Hardness of upper bainite (acicular structure) is about___________________?

   A. RC 65
   B. RC 48
   C. RC 57
   D. RC 80
   E. RC 32.

8. Pure iron is the structure of_______________?

   A. ferrite
   B. pearlite
   C. anstenite
   D. ferrite and cementite
   E. ferrite and pearlite

9. Hardness of steel depends on_________________?

   A. amount of carbon it contains
   B. the shape and distribution of the car-bides in iron
   C. method of fabrication
   D. contents of alloying elements
   E. the quality of ore from which it is made

10. Tungsten in high speed steel provides________________?

    A. hot hardness
    B. toughness
    C. wear resistance
    D. sharp cutting edge
    E. cold hardness