Carbon is present in the combined form (carbide) in case of______________________?

Related Mcqs:

1. Carbon is present in the uncombined (graphitic) form in case of__________________?

   A. Cast iron
   B. Steel
   C. Ferroalloy
   D. None of these

2. High carbon steel contains more than _____________ percent carbon?

   A. 0.5
   B. 2.2
   C. 2.5
   D. 2.8

3. Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making___________________?

   A. Nuts
   B. Bolts
   C. Chisels
   D. Studs

4. Carbon content in plain carbon steel is ______________ percent?

   A. 0.1 to 0.15
   B. 0.35 to 0.45
   C. 0.65 to 0.80
   D. 0.85 to 1.2

5. Low carbon steels are those in which carbon percentage is around____________________?

   A. 0.1 to 0.35
   B. 0.4 to 0.7
   C. 0.8 to 1.5
   D. 1.5 to 2

6. Carbon percentage in medium carbon steel is around__________________?

   A. 0.1 to 0.35
   B. 0.35 to 0.5
   C. 0.8 to 1.4
   D. 1 to 1. 5

7. Spark plugs are made of______________________?

   A. High alumina ceramic
   B. Metallic carbides
   C. Corundum
   D. Carborundum

8. Bush bearings are made of______________________?

   A. Mild steel
   B. Phosphorous bronze
   C. White metal alloys
   D. None of these

9. Which of the following has a very high carbide forming tendency in steels ?

   A. Silicon
   B. Chromium
   C. Nickel
   D. Vanadium

10. With increase in carbide/graphite ratio in cast iron, its__________________?

    A. Hardness & brittleness increases
    B. Ductility decreases
    C. Both A. and B.
    D. Neither A. nor B.