Zinc is highly ______________ at room temperature?

Related Mcqs:

1. Galvanising is not a zinc diffusion process. A zinc diffusion process is termed as_____________________?

   A. Sherardizing
   B. Parkerising
   C. Anodising
   D. None of these

2. The temperature at which new grains are formed in the metal is called the ______________ temperature?

   A. Eutectic
   B. Recrystallisation
   C. Upper critical
   D. Lower critical

3. The process of coating steel sheets by zinc to improve its corrosion resistance is called___________________?

   A. Calorising
   B. Galvanising
   C. Zincification
   D. Tempering

4. Galvanising (i.e., zinc coating) of steel sheets is done to______________________?

   A. Prevent its rusting by contact with corrosive atmosphere
   B. Protect the base metal by cathodic protection
   C. Both A. & B.
   D. Neither A. nor B.

5. Generally _____________ are subjected to galvanising (i.e., zinc coating)?

   A. Non-ferrous metals
   B. Non-metals
   C. Low carbon steels
   D. Stainless steel

6. Maximum consumption of zinc is in____________________?

   A. Alloying
   B. Galvanising
   C. Utensil manufacture
   D. Electrical industry

7. Zinc is not used__________________?

   A. For producing zinc base die casting alloys
   B. In its oxide form as pigments
   C. As anode for corrosion prevention in boiler
   D. As an alloying element in various bronzes

8. Presence of even 0.005% of _____________ in copper makes it highly brittle, rendering it useless for wire-drawing?

   A. Oxygen
   B. Arsenic
   C. Antimony
   D. Bismuth

9. Most common stainless steel type 316, which is highly resistant to corrosion contains______________?

   A. 16-13% Cr 10-14% Ni and 2-3% Mo
   B. 20-22% Cr, and 8-10% Ni
   C. 2-4% Cr, 22% NI and 2-4% Mo
   D. None of these

10. The electrical conductivity of a ______________ decreases with rise in temperature?

    A. Metal/alloy
    B. Semi-conductor
    C. Dielectric
    D. None of these