Age hardening is concerned with_________________?

Related Mcqs:

1. ‘Age hardening’ of duralumin is due to____________________?

   A. Copper
   B. Magnesium
   C. Both A. & B.
   D. Neither A. nor B.

2. The increase in hardness of metal due to its cold working is termed as the _______________ hardening?

   A. Work
   B. Age
   C. Induction
   D. Flame

3. Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is _____________ percent?

   A. 0.02
   B. 0.2
   C. 0.35
   D. 0.5

4. Work hardening of a material ________________?

   A. Decreases its tensile strength
   B. Decreases its ductility
   C. Increases its ductility
   D. Does not affect its ductility

5. ______________ is not a case hardening process?

   A. Carburising
   B. Nitriding
   C. Cyaniding
   D. Annealing

6. Hardening of steel is not possible unless it is heated ______________ critical point?

   A. Above the highest
   B. Above the lowest
   C. Between the first & second
   D. Between the second & third

7. Photographic plates are coated with_________________?

   A. Silver nitrate
   B. Silver halide
   C. Calcium silicate
   D. Metallic silver

8. Bearings subjected to light load are made of________________?

   A. White metal
   B. Phosphorous bronze
   C. Monel
   D. Silicon bronze

9. Post weld heat treatment is done by____________________?

   A. Normalising
   B. Stress relieving
   C. Tempering
   D. Solution annealing

10. Aqueous nitric acid is stored in ______________ vessel?

    A. Plain carbon steel
    B. Stainless steel
    C. Cast iron
    D. Thermosetting plastic material