A material is capable of resisting softening at high temperature, because of its property termed as____________________?

Related Mcqs:

1. The ability of tool steel to resist softening at high temperatures is termed as __________________ hardness?

   A. Red
   B. Extended
   C. Super
   D. Extreme

2. The transition temperature at which all the ferromagnetic materials become paramagnetic materials is termed as the ‘Curie temperature’. Its value for cobalt is ______________ °C?

   A. 768
   B. 1127
   C. 1359
   D. 1480

3. A material in which the atoms are arranged regularly in some directions but not in others, is termed as ‘mesomorphous material’; an example of which is_________________?

   A. Lead
   B. Glass
   C. Mica
   D. Silver

4. The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the _____________ point of the material?

   A. Elastic
   B. Ultimate
   C. Yielding
   D. Breaking

5. The temperature at which ferromagnetic material can no longer be magnetized by the outside forces, is termed as the____________________?

   A. Critical point
   B. Curie temperature
   C. Inversion temperature
   D. Eutectic temperature

6. Softening of hardened steel is done by its____________________?

   A. Normalising
   B. Tempering
   C. Annealing
   D. Carburising

7. A gas which is collected over water becomes moistened due to water vapor, exerts its own partial pressure at the gas temperature, which is termed as its_______________?

   A. Aqueous tension
   B. Saturated humidity
   C. Vapor pressure
   D. Absolute humidity

8. A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material ?

   A. Steel
   B. Glass
   C. Rubber
   D. Brass

9. Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are ?

   A. Cobalt, chromium & tungsten
   B. Cobalt, chromium & nickel
   C. Molybdenum, tungsten & chromium
   D. Cobalt, zirconium & molybdenum

10. _______________ is the hardest oxide and is hence used where high wear resistance at high temperature is required?

    A. Beryllium
    B. Zirconia
    C. Alumina
    D. Magnesia