Corrosion resistance of steel is increased by adding__________________?

Related Mcqs:

1. Corrosion resistance of steel is increased by addition of________________?

   A. chromium and nickel B. sulphur, phosphorus, lead C. vanadium, aluminium D. tungsten, molybdenum, vanadium, chromium E. zinc...

2. Depth of hardness of steel is increased by addition of_________________?

   A. nickel B. chromium C. tungsten D. vanadium E. ell of the above...

3. The machinability of steel is increased by___________________?

   A. silicon and sulphur B. phosphorous, lead and sulphur C. sulphur, graphite and aluminium D. phosphorous and aluminium E. none of the above...

4. Which of the following pipes is least corrosion resistant__________________?

   A. brass B. mild steel C. cast iron D. wrought iron E. copper...

5. Steel contains____________________?

   A. 80% or more iron B. 50% or more iron C. alloying elements like chromium, tungsten nickel and copper D. elements like phosphorus, sulphur and silicon in varying quantities E. high quantities of sulphur...

6. Eutectoid steel contains following percentage of carbon_______________?

   A. 0.02% B. 0.3% C. 0.63% D. 0.8% E. 1.2%....

7. 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...

8. Tensile strength of steel can be safely in-creased by________________?

   A. adding carbon up to 2.8% B. adding carbon up to 6.3% C. adding carbon up to 0.83% D. adding small quantities of copper E. adding copper and carbon...

9. The percentage of carbon in low carbon steel is__________________?

   A. 0.05% B. 0.15% C. 0.3% D. 0.5% E. 0.7%....

10. The hardness of steel primarily depends on _____________________?

    A. %age of carbon B. %age of alloying elements C. heat treatment employed D. method of manufacture E. shape of carbides and their distribution in iron...